rtl8821ce wifi connection

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as4flex
Level 1
Level 1
Posts: 5
Joined: Fri May 03, 2019 2:17 pm

rtl8821ce wifi connection

Post by as4flex » Fri May 03, 2019 3:29 pm

Hi,

I have install mint 19 and my wifi network is not working properly. I'm getting slow internet speed and I have also tried all the solutions provided in the other posts.

Thanks,
Sanjay

sleeper12
Level 5
Level 5
Posts: 696
Joined: Thu May 25, 2017 3:22 pm

Re: rtl8821ce wifi connection

Post by sleeper12 » Fri May 03, 2019 4:23 pm


as4flex
Level 1
Level 1
Posts: 5
Joined: Fri May 03, 2019 2:17 pm

Re: rtl8821ce wifi connection

Post by as4flex » Fri May 03, 2019 5:03 pm

Already followed but still no luck

JeremyB
Level 20
Level 20
Posts: 10690
Joined: Fri Feb 21, 2014 8:17 am

Re: rtl8821ce wifi connection

Post by JeremyB » Fri May 03, 2019 6:07 pm

In terminal run

Code: Select all

wget -N -t 5 -T 10 https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info && chmod +x wireless-info && ./wireless-info
cat wireless-info.txt | nc termbin.com 9999
Post termbin URL

as4flex
Level 1
Level 1
Posts: 5
Joined: Fri May 03, 2019 2:17 pm

Re: rtl8821ce wifi connection

Post by as4flex » Sat May 04, 2019 4:57 am

Code: Select all

########## wireless info START ##########

Report from: 04 May 2019 10:48 CEST +0200

Booted last: 04 May 2019 00:00 CEST +0200

Script from: 22 Oct 2018 03:34 UTC +0000

##### release ###########################

Distributor ID:	LinuxMint
Description:	Linux Mint 19.1 Tessa
Release:	19.1
Codename:	tessa

##### kernel ############################

Linux 4.18.0-18-generic #19~18.04.1-Ubuntu SMP Fri Apr 5 10:22:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=1

##### desktop ###########################

Cinnamon

##### lspci #############################

01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
	Subsystem: Lenovo RTL8821CE 802.11ac PCIe Wireless Network Adapter [17aa:c024]
	Kernel driver in use: rtl8821ce

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
	Subsystem: Lenovo RTL810xE PCI Express Fast Ethernet controller [17aa:3861]
	Kernel driver in use: r8169

##### lsusb #############################

Bus 001 Device 004: ID 174f:241a Syntek 
Bus 001 Device 003: ID 0bda:c024 Realtek Semiconductor Corp. 
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA card info ##################

##### rfkill ############################

0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: ideapad_wlan: Wireless LAN
	Soft blocked: no
	Hard blocked: no
2: ideapad_bluetooth: Bluetooth
	Soft blocked: yes
	Hard blocked: no
3: hci0: Bluetooth
	Soft blocked: yes
	Hard blocked: no

##### secure boot #######################

SecureBoot disabled

##### lsmod #############################

ideapad_laptop         36864  0
sparse_keymap          16384  1 ideapad_laptop
wmi_bmof               16384  0
cfg80211              667648  1 8821ce
wmi                    24576  2 wmi_bmof,ideapad_laptop
video                  45056  1 ideapad_laptop

##### interfaces ########################

[/etc/network/interfaces]
auto lo
iface lo inet loopback

##### ifconfig ##########################

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback <MAC address> brd <MAC address>
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether <MAC 'enp2s0' [IF1]> brd <MAC address>
3: wlp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether <MAC 'wlp1s0' [IF2]> brd <MAC address>
    inet 192.168.0.233/24 brd 192.168.0.255 scope global dynamic noprefixroute wlp1s0
       valid_lft 2950sec preferred_lft 2950sec
    inet6 2a02:810a:9c0:65a::2164/128 scope global dynamic noprefixroute 
       valid_lft 604149sec preferred_lft 604149sec
    inet6 2a02:810a:9c0:65a:5205:b51d:bb41:44fe/64 scope global dynamic noprefixroute 
       valid_lft 5399sec preferred_lft 2699sec
    inet6 fe80::8be4:cef8:d655:1cf3/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

##### iwconfig ##########################

enp2s0    no wireless extensions.

lo        no wireless extensions.

wlp1s0    IEEE 802.11gn  ESSID:"SANJU_LATU_NISHU"  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency:2.462 GHz  Access Point: <MAC 'SANJU_LATU_NISHU' [AC26]>   
          Bit Rate:72.2 Mb/s   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=86/100  Signal level=65/100  Noise level=0/100
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

##### route #############################

default via 192.168.0.1 dev wlp1s0 proto dhcp metric 600 
169.254.0.0/16 dev wlp1s0 scope link metric 1000 
192.168.0.0/24 dev wlp1s0 proto kernel scope link src 192.168.0.233 metric 600 

##### resolv.conf #######################

[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']

nameserver 127.0.0.53

##### network managers ##################

Installed:

	NetworkManager

Running:

root       800     1  0 10:37 ?        00:00:00 /usr/sbin/NetworkManager --no-daemon

##### NetworkManager info ###############

GENERAL.DEVICE:                         wlp1s0
GENERAL.TYPE:                           wifi
GENERAL.NM-TYPE:                        NMDeviceWifi
GENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT:                        RTL8821CE 802.11ac PCIe Wireless Network Adapter
GENERAL.DRIVER:                         rtl8821ce
GENERAL.DRIVER-VERSION:                 --
GENERAL.FIRMWARE-VERSION:               --
GENERAL.HWADDR:                         <MAC 'wlp1s0' [IF2]>
GENERAL.MTU:                            1500
GENERAL.STATE:                          100 (connected)
GENERAL.REASON:                         0 (No reason given)
GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:02.3/0000:01:00.0/net/wlp1s0
GENERAL.IP-IFACE:                       wlp1s0
GENERAL.IS-SOFTWARE:                    no
GENERAL.NM-MANAGED:                     yes
GENERAL.AUTOCONNECT:                    yes
GENERAL.FIRMWARE-MISSING:               no
GENERAL.NM-PLUGIN-MISSING:              no
GENERAL.PHYS-PORT-ID:                   --
GENERAL.CONNECTION:                     Auto SANJU_LATU_NISHU
GENERAL.CON-UUID:                       ae4c190c-222e-4255-a9bd-054b3a24cf9d
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.METERED:                        no (guessed)
CAPABILITIES.CARRIER-DETECT:            no
CAPABILITIES.SPEED:                     72 Mb/s
CAPABILITIES.IS-SOFTWARE:               no
CAPABILITIES.SRIOV:                     no
WIFI-PROPERTIES.WEP:                    yes
WIFI-PROPERTIES.WPA:                    yes
WIFI-PROPERTIES.WPA2:                   yes
WIFI-PROPERTIES.TKIP:                   yes
WIFI-PROPERTIES.CCMP:                   yes
WIFI-PROPERTIES.AP:                     yes
WIFI-PROPERTIES.ADHOC:                  yes
WIFI-PROPERTIES.2GHZ:                   yes
WIFI-PROPERTIES.5GHZ:                   yes
IP4.ADDRESS[1]:                         192.168.0.233/24
IP4.GATEWAY:                            192.168.0.1
IP4.ROUTE[1]:                           dst = 0.0.0.0/0, nh = 192.168.0.1, mt = 600
IP4.ROUTE[2]:                           dst = 192.168.0.0/24, nh = 0.0.0.0, mt = 600
IP4.ROUTE[3]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]:                             192.168.0.1
DHCP4.OPTION[1]:                        dhcp_rebinding_time = 3150
DHCP4.OPTION[2]:                        requested_domain_search = 1
DHCP4.OPTION[3]:                        network_number = 192.168.0.0
DHCP4.OPTION[4]:                        requested_broadcast_address = 1
DHCP4.OPTION[5]:                        host_name = sanjay
DHCP4.OPTION[6]:                        requested_domain_name = 1
DHCP4.OPTION[7]:                        requested_time_offset = 1
DHCP4.OPTION[8]:                        requested_ms_classless_static_routes = 1
DHCP4.OPTION[9]:                        expiry = 1556962683
DHCP4.OPTION[10]:                       requested_wpad = 1
DHCP4.OPTION[11]:                       next_server = 192.168.0.1
DHCP4.OPTION[12]:                       broadcast_address = 192.168.0.255
DHCP4.OPTION[13]:                       requested_interface_mtu = 1
DHCP4.OPTION[14]:                       requested_subnet_mask = 1
DHCP4.OPTION[15]:                       requested_netbios_scope = 1
DHCP4.OPTION[16]:                       routers = 192.168.0.1
DHCP4.OPTION[17]:                       ip_address = 192.168.0.233
DHCP4.OPTION[18]:                       requested_domain_name_servers = 1
DHCP4.OPTION[19]:                       subnet_mask = 255.255.255.0
DHCP4.OPTION[20]:                       dhcp_renewal_time = 1800
DHCP4.OPTION[21]:                       dhcp_lease_time = 3600
DHCP4.OPTION[22]:                       requested_static_routes = 1
DHCP4.OPTION[23]:                       requested_ntp_servers = 1
DHCP4.OPTION[24]:                       requested_netbios_name_servers = 1
DHCP4.OPTION[25]:                       domain_name_servers = 192.168.0.1
DHCP4.OPTION[26]:                       requested_routers = 1
DHCP4.OPTION[27]:                       requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[28]:                       dhcp_message_type = 5
DHCP4.OPTION[29]:                       requested_host_name = 1
DHCP4.OPTION[30]:                       dhcp_server_identifier = 192.168.0.1
IP6.ADDRESS[1]:                         2a02:810a:9c0:65a:5205:b51d:bb41:44fe/64
IP6.ADDRESS[2]:                         2a02:810a:9c0:65a::2164/128
IP6.ADDRESS[3]:                         fe80::8be4:cef8:d655:1cf3/64
IP6.GATEWAY:                            fe80::4e12:65ff:fef4:8dab
IP6.ROUTE[1]:                           dst = 2a02:810a:9c0:65a::/64, nh = ::, mt = 600
IP6.ROUTE[2]:                           dst = ::/0, nh = fe80::4e12:65ff:fef4:8dab, mt = 600
IP6.ROUTE[3]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
IP6.ROUTE[4]:                           dst = fe80::/64, nh = ::, mt = 256
IP6.ROUTE[5]:                           dst = fe80::/64, nh = ::, mt = 600
IP6.ROUTE[6]:                           dst = 2a02:810a:9c0:65a::2164/128, nh = ::, mt = 600
IP6.DNS[1]:                             2a02:810a:9c0:65a:4e12:65ff:fef4:8dab
DHCP6.OPTION[1]:                        dhcp6_client_id = 0:4:5b:dc:63:88:ee:e6:f0:6f:73:ce:a7:95:67:b1:a5:83
DHCP6.OPTION[2]:                        requested_dhcp6_name_servers = 1
DHCP6.OPTION[3]:                        dhcp6_name_servers = 2a02:810a:9c0:65a:4e12:65ff:fef4:8dab
DHCP6.OPTION[4]:                        rebind = 483840
DHCP6.OPTION[5]:                        max_life = 604800
DHCP6.OPTION[6]:                        preferred_life = 604800
DHCP6.OPTION[7]:                        requested_dhcp6_domain_search = 1
DHCP6.OPTION[8]:                        requested_dhcp6_client_id = 1
DHCP6.OPTION[9]:                        life_starts = 1556912897
DHCP6.OPTION[10]:                       dhcp6_status_code = success Assigned an address.
DHCP6.OPTION[11]:                       ip6_address = 2a02:810a:9c0:65a::2164
DHCP6.OPTION[12]:                       ip6_prefixlen = 64
DHCP6.OPTION[13]:                       renew = 302400
DHCP6.OPTION[14]:                       dhcp6_server_id = 0:1:0:1:24:37:b4:cf:4c:12:65:f4:8d:ab
DHCP6.OPTION[15]:                       starts = 1556912897
DHCP6.OPTION[16]:                       iaid = 36:a8:5c:fd
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{1}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   ae4c190c-222e-4255-a9bd-054b3a24cf9d | Auto SANJU_LATU_NISHU

GENERAL.DEVICE:                         enp2s0
GENERAL.TYPE:                           ethernet
GENERAL.NM-TYPE:                        NMDeviceEthernet
GENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT:                        RTL810xE PCI Express Fast Ethernet controller
GENERAL.DRIVER:                         r8169
GENERAL.DRIVER-VERSION:                 2.3LK-NAPI
GENERAL.FIRMWARE-VERSION:               --
GENERAL.HWADDR:                         <MAC 'enp2s0' [IF1]>
GENERAL.MTU:                            1500
GENERAL.STATE:                          20 (unavailable)
GENERAL.REASON:                         2 (Device is now managed)
GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:02.4/0000:02:00.0/net/enp2s0
GENERAL.IP-IFACE:                       --
GENERAL.IS-SOFTWARE:                    no
GENERAL.NM-MANAGED:                     yes
GENERAL.AUTOCONNECT:                    yes
GENERAL.FIRMWARE-MISSING:               no
GENERAL.NM-PLUGIN-MISSING:              no
GENERAL.PHYS-PORT-ID:                   --
GENERAL.CONNECTION:                     --
GENERAL.CON-UUID:                       --
GENERAL.CON-PATH:                       --
GENERAL.METERED:                        unknown
CAPABILITIES.CARRIER-DETECT:            yes
CAPABILITIES.SPEED:                     unknown
CAPABILITIES.IS-SOFTWARE:               no
CAPABILITIES.SRIOV:                     no
WIRED-PROPERTIES.CARRIER:               off
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: --

SSID              BSSID              MODE   CHAN  FREQ      RATE        SIGNAL  BARS  SECURITY  ACTIVE  IN-USE 
SANJU_LATU_NISHU  <MAC 'SANJU_LATU_NISHU' [AC26]>  Infra  11    2462 MHz  405 Mbit/s  85      ▂▄▆█  WPA2      yes     *      

##### NetworkManager.state ##############

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true

##### NetworkManager config #############

[[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]
[connection]
wifi.powersave = 2

[[/etc/NetworkManager/NetworkManager.conf]]
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no

[[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]
[main]
dns=systemd-resolved

[[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]
[keyfile]
unmanaged-devices=*,except:type:wifi,except:type:wwan

[[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]
[connectivity]
uri=http://connectivity-check.ubuntu.com/

[[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]
[device-mac-addr-change-wifi]
match-device=driver:rtl8723bs,driver:rtl8189es,driver:r8188eu,driver:8188eu,driver:eagle_sdio,driver:wl
wifi.scan-rand-mac-address=no
wifi.cloned-mac-address=preserve
ethernet.cloned-mac-address=preserve

##### NetworkManager profiles ###########

[[/etc/NetworkManager/system-connections/Auto SANJU_LATU_NISHU]] (600 root)
[connection] id=Auto SANJU_LATU_NISHU | type=wifi | permissions=
[wifi] bssid=<MAC 'SANJU_LATU_NISHU' [AC26]> | mac-address=<MAC 'wlp1s0' [IF2]> | mac-address-blacklist= | ssid=SANJU_LATU_NISHU
[ipv4] method=auto
[ipv6] method=auto

##### Netplan config ####################

[/etc/netplan/1-network-manager-all.yaml]
network:
  version: 2
  renderer: NetworkManager

##### iw reg get ########################

Region: Europe/Berlin (based on set time zone)

global
country 00: DFS-UNSET
	(2402 - 2472 @ 40), (N/A, 20), (N/A)
	(2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
	(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
	(5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
	(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
	(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
	(5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
	(57240 - 63720 @ 2160), (N/A, 0), (N/A)

##### iwlist channels ###################

enp2s0    no frequency information.

lo        no frequency information.

wlp1s0    22 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Channel 36 : 5.18 GHz
          Channel 40 : 5.2 GHz
          Channel 44 : 5.22 GHz
          Channel 48 : 5.24 GHz
          Channel 149 : 5.745 GHz
          Channel 153 : 5.765 GHz
          Channel 157 : 5.785 GHz
          Channel 161 : 5.805 GHz
          Channel 165 : 5.825 GHz
          Current Frequency:2.462 GHz (Channel 11)

##### iwlist scan #######################

enp2s0    Interface doesn't support scanning.

lo        Interface doesn't support scanning.

Channel occupancy:

      5   APs on   Frequency:2.412 GHz (Channel 1)
      5   APs on   Frequency:2.417 GHz (Channel 2)
      8   APs on   Frequency:2.437 GHz (Channel 6)
      8   APs on   Frequency:2.462 GHz (Channel 11)
      1   APs on   Frequency:2.472 GHz (Channel 13)
      2   APs on   Frequency:5.24 GHz (Channel 48)
      1   APs on   Frequency:5.2 GHz (Channel 40)

wlp1s0    Scan completed :
          Cell 01 - Address: <MAC 'Vodafone Hotspot' [AC1]>
                    ESSID:"Vodafone Hotspot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.417 GHz (Channel 2)
                    Encryption key:off
                    Bit Rates:300 Mb/s
                    Quality=0/100  Signal level=19/100  
                    Extra:fm=0001
          Cell 02 - Address: <MAC 'Salamisalat' [AC2]>
                    ESSID:"Salamisalat"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.412 GHz (Channel 1)
                    Encryption key:on
                    Bit Rates:144 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=35/100  
                    Extra:fm=0003
          Cell 03 - Address: <MAC 'Vodafone Homespot' [AC3]>
                    ESSID:"Vodafone Homespot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.412 GHz (Channel 1)
                    Encryption key:off
                    Bit Rates:300 Mb/s
                    Quality=0/100  Signal level=15/100  
                    Extra:fm=0003
          Cell 04 - Address: <MAC 'Vodafone Homespot' [AC4]>
                    ESSID:"Vodafone Homespot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.412 GHz (Channel 1)
                    Encryption key:off
                    Bit Rates:300 Mb/s
                    Quality=0/100  Signal level=12/100  
                    Extra:fm=0001
          Cell 05 - Address: <MAC 'DIRECT-FF-HP ENVY 4520 series' [AC5]>
                    ESSID:"DIRECT-FF-HP ENVY 4520 series"
                    Protocol:IEEE 802.11gn
                    Mode:Master
                    Frequency:2.417 GHz (Channel 2)
                    Encryption key:on
                    Bit Rates:72 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=10/100  Signal level=30/100  
                    Extra:fm=0003
          Cell 06 - Address: <MAC 'KabelBox-2D04' [AC6]>
                    ESSID:"KabelBox-2D04"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.412 GHz (Channel 1)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:rsn_ie=30180100000fac020200000fac02000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=24/100  
                    Extra:fm=0001
          Cell 07 - Address: <MAC 'Vodafone Hotspot' [AC7]>
                    ESSID:"Vodafone Hotspot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.412 GHz (Channel 1)
                    Encryption key:off
                    Bit Rates:300 Mb/s
                    Quality=0/100  Signal level=26/100  
                    Extra:fm=0001
          Cell 08 - Address: <MAC 'Headquarter' [AC8]>
                    ESSID:"Headquarter"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.417 GHz (Channel 2)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:wpa_ie=dd160050f20101000050f20201000050f20201000050f202
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    Extra:
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=9/100  
                    Extra:fm=0001
          Cell 09 - Address: <MAC 'Vodafone Homespot' [AC9]>
                    ESSID:"Vodafone Homespot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.417 GHz (Channel 2)
                    Encryption key:off
                    Bit Rates:300 Mb/s
                    Quality=0/100  Signal level=18/100  
                    Extra:fm=0001
          Cell 10 - Address: <MAC 'Ellis' [AC10]>
                    ESSID:"Ellis"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.417 GHz (Channel 2)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=18/100  
                    Extra:fm=0001
          Cell 11 - Address: <MAC 'Telekom_FON' [AC11]>
                    ESSID:"Telekom_FON"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:off
                    Bit Rates:300 Mb/s
                    Quality=0/100  Signal level=36/100  
                    Extra:fm=0003
          Cell 12 - Address: <MAC 'KDG-24301' [AC12]>
                    ESSID:"KDG-24301"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:270 Mb/s
                    Extra:wpa_ie=dd1a0050f20101000050f20202000050f2020050f20401000050f202
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    Extra:
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : TKIP CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=50/100  
                    Extra:fm=0003
          Cell 13 - Address: <MAC 'WLAN-108429' [AC13]>
                    ESSID:"WLAN-108429"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:1.3 Gb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=35/100  
                    Extra:fm=0003
          Cell 14 - Address: <MAC 'Vodafone-2436' [AC14]>
                    ESSID:"Vodafone-2436"
                    Protocol:IEEE 802.11gn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=16/100  
                    Extra:fm=0001
          Cell 15 - Address: <MAC 'Dackelblut' [AC15]>
                    ESSID:"Dackelblut"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:144 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=14/100  
                    Extra:fm=0003
          Cell 16 - Address: <MAC 'Telekom_FON' [AC16]>
                    ESSID:"Telekom_FON"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:off
                    Bit Rates:144 Mb/s
                    Quality=0/100  Signal level=12/100  
                    Extra:fm=0003
          Cell 17 - Address: <MAC 'Vodafone-2086' [AC17]>
                    ESSID:"Vodafone-2086"
                    Protocol:IEEE 802.11gn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=21/100  
                    Extra:fm=0001
          Cell 18 - Address: <MAC 'Vodafone-2086' [AC18]>
                    ESSID:"Vodafone-2086"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.437 GHz (Channel 6)
                    Encryption key:on
                    Bit Rates:144 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=14/100  
                    Extra:fm=0001
          Cell 19 - Address: <MAC 'KabelBox-EB34' [AC19]>
                    ESSID:"KabelBox-EB34"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=41/100  
                    Extra:fm=0001
          Cell 20 - Address: <MAC 'Vodafone Homespot' [AC20]>
                    ESSID:"Vodafone Homespot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:off
                    Bit Rates:300 Mb/s
                    Quality=0/100  Signal level=44/100  
                    Extra:fm=0003
          Cell 21 - Address: <MAC 'Vodafone-8C87' [AC21]>
                    ESSID:"Vodafone-8C87"
                    Protocol:IEEE 802.11gn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=34/100  
                    Extra:fm=0001
          Cell 22 - Address: <MAC 'Vodafone Hotspot' [AC22]>
                    ESSID:"Vodafone Hotspot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:off
                    Bit Rates:144 Mb/s
                    Quality=0/100  Signal level=31/100  
                    Extra:fm=0003
          Cell 23 - Address: <MAC 'Vodafone Hotspot' [AC23]>
                    ESSID:"Vodafone Hotspot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:off
                    Bit Rates:300 Mb/s
                    Quality=0/100  Signal level=45/100  
                    Extra:fm=0001
          Cell 24 - Address: <MAC 'Vodafone Homespot' [AC24]>
                    ESSID:"Vodafone Homespot"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:off
                    Bit Rates:144 Mb/s
                    Quality=0/100  Signal level=31/100  
                    Extra:fm=0003
          Cell 25 - Address: <MAC 'MeinNameIstGeronimoRoeder' [AC25]>
                    ESSID:"MeinNameIstGeronimoRoeder"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:144 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=0/100  Signal level=31/100  
                    Extra:fm=0003
          Cell 26 - Address: <MAC 'SANJU_LATU_NISHU' [AC26]>
                    ESSID:"SANJU_LATU_NISHU"
                    Protocol:IEEE 802.11gn
                    Mode:Master
                    Frequency:2.462 GHz (Channel 11)
                    Encryption key:on
                    Bit Rates:300 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=82/100  Signal level=65/100  
                    Extra:fm=0001
          Cell 27 - Address: <MAC 'FRITZ!Box 7430 SB' [AC27]>
                    ESSID:"FRITZ!Box 7430 SB"
                    Protocol:IEEE 802.11bgn
                    Mode:Master
                    Frequency:2.472 GHz (Channel 13)
                    Encryption key:on
                    Bit Rates:144 Mb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=21/100  Signal level=20/100  
                    Extra:fm=0001
          Cell 28 - Address: <MAC 'MeinNameIstGeronimoRoeder' [AC28]>
                    ESSID:"MeinNameIstGeronimoRoeder"
                    Protocol:IEEE 802.11AC
                    Mode:Master
                    Frequency:5.2 GHz (Channel 40)
                    Encryption key:on
                    Bit Rates:1.3 Gb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=28/100  Signal level=18/100  
                    Extra:fm=0003
          Cell 29 - Address: <MAC 'Ellis' [AC29]>
                    ESSID:"Ellis"
                    Protocol:IEEE 802.11AC
                    Mode:Master
                    Frequency:5.24 GHz (Channel 48)
                    Encryption key:on
                    Bit Rates:1.3 Gb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=18/100  Signal level=16/100  
                    Extra:fm=0003
          Cell 30 - Address: <MAC 'Vodafone-A90B' [AC30]>
                    ESSID:"Vodafone-A90B"
                    Protocol:IEEE 802.11AC
                    Mode:Master
                    Frequency:5.24 GHz (Channel 48)
                    Encryption key:on
                    Bit Rates:1.3 Gb/s
                    Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    Quality=36/100  Signal level=25/100  
                    Extra:fm=0003

##### module infos ######################

[cfg80211]
filename:       /lib/modules/4.18.0-18-generic/kernel/net/wireless/cfg80211.ko
description:    wireless configuration support
license:        GPL
author:         Johannes Berg
srcversion:     BFB309EF7C6C321F605D36E
depends:        
retpoline:      Y
intree:         Y
name:           cfg80211
vermagic:       4.18.0-18-generic SMP mod_unload 
signat:         PKCS#7
signer:         
sig_key:        
sig_hashalgo:   md4
parm:           bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)
parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)

##### module parameters #################

[cfg80211]
bss_entries_limit: 1000
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00

##### /etc/modules ######################

##### modprobe options ##################

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off

[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211

[/etc/modprobe.d/rtl8821ce.conf]
options rtl8821ce fwlps=N ips=N

##### rc.local ##########################

grep: /etc/rc.local: No such file or directory

##### pm-utils ##########################

##### udev rules ########################

##### dmesg #############################

[   55.928943] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready
[   56.176104] r8169 0000:02:00.0 enp2s0: link down
[   56.176215] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready
[   56.200879] IPv6: ADDRCONF(NETDEV_UP): wlp1s0: link is not ready
[   56.698261] RTW: wlp1s0- hw port(0) mac_addr =<MAC 'wlp1s0' [IF2]>
[   56.698671] IPv6: ADDRCONF(NETDEV_UP): wlp1s0: link is not ready (repeated 2 times)
[   59.686019] RTW: wlp1s0- hw port(0) mac_addr =<MAC 'wlp1s0' [IF2]>
[   59.686331] RTW: rtw_set_802_11_connect(wlp1s0)  fw_state=0x00000000
[   59.836039] IPv6: ADDRCONF(NETDEV_CHANGE): wlp1s0: link becomes ready
[  293.850183] TCP: wlp1s0: Driver has suspect GRO implementation, TCP performance may be compromised.

########## wireless info END ############
Attachments
wireless-info.tar.gz
(6.86 KiB) Downloaded 3 times
Last edited by JeremyB on Sat May 04, 2019 6:04 am, edited 1 time in total.
Reason: code tags

JeremyB
Level 20
Level 20
Posts: 10690
Joined: Fri Feb 21, 2014 8:17 am

Re: rtl8821ce wifi connection

Post by JeremyB » Sat May 04, 2019 6:23 am

Try

Code: Select all

echo "options 8821ce rtw_power_mgnt=0" | sudo tee /etc/modprobe.d/8821ce.conf
Reboot

as4flex
Level 1
Level 1
Posts: 5
Joined: Fri May 03, 2019 2:17 pm

Re: rtl8821ce wifi connection

Post by as4flex » Sat May 04, 2019 7:30 am

Hi JeremyB,

I run the command and reboot. But the result still same it work for sometime but again speed get decreased also the strength of the wifi signal decreased. Please see the attached screenshots.
Attachments
Screenshot from 2019-05-04 13-28-26.png
Screenshot from 2019-05-04 13-28-11.png

JeremyB
Level 20
Level 20
Posts: 10690
Joined: Fri Feb 21, 2014 8:17 am

Re: rtl8821ce wifi connection

Post by JeremyB » Sat May 04, 2019 7:46 am

You could go into Network Manager settings and change Ipv6 to ignore/disable and set your country code sudo iw reg set DE

as4flex
Level 1
Level 1
Posts: 5
Joined: Fri May 03, 2019 2:17 pm

Re: rtl8821ce wifi connection

Post by as4flex » Sat May 04, 2019 9:08 am

it doesn't help

Dot_mdb
Level 2
Level 2
Posts: 53
Joined: Sun Apr 08, 2018 9:16 pm

Re: rtl8821ce wifi connection

Post by Dot_mdb » Sat May 04, 2019 12:53 pm

On problems like this I believe in using the sledge hammer approach. I have used the following WiFi dongle on a number of Mint installs and it always works:

Panda Wireless PAU06 300Mbps N USB Adapter

No driver problems and the most I have ever had to do was reboot.

Bill

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