Low wi-fi strength at 44%

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deepakdeshp
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Low wi-fi strength at 44%

Post by deepakdeshp »

Hello,
My Ryzen system shows wi-fi strength of 44% whereas my AMD A8 processor 5 year old system shows 68 % wi-fi strength. Both systems in the same room, Ryzen running 5.8.45 and A8 running 5.8.44 kernels. When both ran the same kernel, the result was the same. Both run Mint 20.1. Any suggestions please?
My Ryzen system inxi report

Code: Select all

inxi -Fxz
System:
  Kernel: 5.8.0-45-generic x86_64 bits: 64 compiler: N/A 
  Desktop: Cinnamon 4.8.6 Distro: Linux Mint 20.1 Ulyssa 
  base: Ubuntu 20.04 focal 
Machine:
  Type: Laptop System: HP product: HP Laptop 15s-gr0xxx 
  v: Type1ProductConfigId serial: <filter> 
  Mobo: HP model: 87D1 v: 38.12 serial: <filter> UEFI: Insyde v: F.01 
  date: 05/08/2020 
Battery:
  ID-1: BAT1 charge: 9.9 Wh condition: 35.7/41.9 Wh (85%) 
  model: Hewlett-Packard PABAS0241231 status: Discharging 
CPU:
  Topology: Quad Core model: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx 
  bits: 64 type: MT MCP arch: Zen+ rev: 1 L2 cache: 2048 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm 
  bogomips: 33533 
  Speed: 1279 MHz min/max: 1400/2100 MHz Core speeds (MHz): 1: 1259 2: 1289 
  3: 1334 4: 1271 5: 1314 6: 1221 7: 1325 8: 1374 
Graphics:
  Device-1: AMD Picasso vendor: Hewlett-Packard driver: amdgpu v: kernel 
  bus ID: 04:00.0 
  Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa 
  resolution: 1920x1080~60Hz 
  OpenGL: renderer: AMD RAVEN (DRM 3.38.0 5.8.0-45-generic LLVM 10.0.0) 
  v: 4.6 Mesa 20.0.0-devel - padoka PPA direct render: Yes 
Audio:
  Device-1: AMD Raven/Raven2/Fenghuang HDMI/DP Audio vendor: Hewlett-Packard 
  driver: snd_hda_intel v: kernel bus ID: 04:00.1 
  Device-2: AMD Raven/Raven2/FireFlight/Renoir Audio Processor 
  vendor: Hewlett-Packard driver: N/A bus ID: 04:00.5 
  Device-3: AMD Family 17h HD Audio vendor: Hewlett-Packard 
  driver: snd_hda_intel v: kernel bus ID: 04:00.6 
  Sound Server: ALSA v: k5.8.0-45-generic 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Hewlett-Packard driver: r8169 v: kernel port: 3000 bus ID: 02:00.0 
  IF: eno1 state: down mac: <filter> 
  Device-2: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter 
  vendor: Hewlett-Packard driver: rtl8821ce v: v5.5.2.1_35598.20191029 
  port: 2000 bus ID: 03:00.0 
  IF: wlo1 state: up mac: <filter> 
  IF-ID-1: vmnet1 state: unknown speed: N/A duplex: N/A mac: <filter> 
  IF-ID-2: vmnet8 state: unknown speed: N/A duplex: N/A mac: <filter> 
Drives:
  Local Storage: total: 931.51 GiB used: 105.30 GiB (11.3%) 
  ID-1: /dev/sda vendor: Seagate model: ST1000LM035-1RK172 size: 931.51 GiB 
Partition:
  ID-1: / size: 211.35 GiB used: 105.23 GiB (49.8%) fs: ext4 dev: /dev/sda7 
  ID-2: swap-1 size: 8.79 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda8 
Sensors:
  System Temperatures: cpu: 48.8 C mobo: N/A gpu: amdgpu temp: 48 C 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 310 Uptime: 10m Memory: 5.81 GiB used: 1.96 GiB (33.7%) 
  Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 Shell: bash v: 5.0.17 
  inxi: 3.0.38 
iwconfig
lo        no wireless extensions.

eno1      no wireless extensions.

wlo1      IEEE 802.11bgn  ESSID:"Airtel"  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency:2.457 GHz  Access Point: FC:DD:55:96:31:FC   
          Bit Rate:150 Mb/s   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=97/100  Signal level=-76 dBm  Noise level=0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

vmnet1    no wireless extensions.

vmnet8    no wireless extensions.
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
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Pjotr
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Re: Low wi-fi strength at 44%

Post by Pjotr »

Well, I'd simply revert to the older kernel and wait for the redeeming update. :wink:
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deepakdeshp
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Re: Low wi-fi strength at 44%

Post by deepakdeshp »

Pjotr wrote: ⤴Mon Mar 22, 2021 7:13 am Well, I'd simply revert to the older kernel and wait for the redeeming update. :wink:
Any kernel I use gives me 44%. The older kernel and the newer one give me around 68% signal strength on my 5 year old laptop and not the newer one. The newer one gives 44% on all kernels.
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deepakdeshp
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Re: Low wi-fi strength at 44%

Post by deepakdeshp »

Code: Select all

 inxi -Fxz|grep 8821
  Device-2: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter 
  vendor: Hewlett-Packard driver: rtl8821ce v: v5.5.2.1_35598.20191029
The driver for the above Realtek wi-fi card has to be updated .

Code: Select all

 sudo apt-get install rtl8821ce-dkms
Reading package lists... Done
Building dependency tree       
Reading state information... Done
rtl8821ce-dkms is already the newest version (5.5.2.1-0ubuntu4~20.04.3).
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.
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Moonstone Man
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Re: Low wi-fi strength at 44%

Post by Moonstone Man »

deepakdeshp wrote: ⤴Mon Mar 22, 2021 8:03 am The newer one gives 44% on all kernels.
So, have you disabled wifi power saving or not?
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deepakdeshp
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Re: Low wi-fi strength at 44%

Post by deepakdeshp »

Power saving is disabled. The question is about the signal strength.
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Moonstone Man
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Re: Low wi-fi strength at 44%

Post by Moonstone Man »

deepakdeshp wrote: ⤴Tue Mar 23, 2021 1:47 am The question is about the signal strength.
Well, I'll just point out that signal strength is impacted by power saving. I'll leave you to it.
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hglee
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Re: Low wi-fi strength at 44%

Post by hglee »

deepakdeshp wrote:My Ryzen system shows wi-fi strength of 44% whereas my AMD A8 processor 5 year old system shows 68 % wi-fi strength

You could tweak the antenna configurations, to see if one works better than another.


Try the following: Set the antenna configuration, then scan for APs. Change to a different antenna setup, and do another scan. With each scan, note the signal quality and levels, and even how many APs are seen.

Open a Terminal, then copy-and-paste these commands, one by one. The scans are filtered to show signal quality/level for each AP...

Code: Select all

sudo rmmod rtl8821ce
sudo modprobe rtl8821ce ant_sel=1
sudo iwlist wlo1 scan | grep -i qual
#
sudo rmmod rtl8821ce
sudo modprobe rtl8821ce ant_sel=2
sudo iwlist wlo1 scan | grep -i qual

If ant_sel=1 showed the better results, make it the default...

Code: Select all

echo "options rtl8821ce ant_sel=1" | sudo tee /etc/modprobe.d/rtl8821ce_ant.conf
If ant_sel=2 showed the better results, make it the default...

Code: Select all

echo "options rtl8821ce ant_sel=2" | sudo tee /etc/modprobe.d/rtl8821ce_ant.conf

What's the output of the following command-line? ...

Code: Select all

sudo apt-get install -y sysfsutils>/dev/null&&systool -vm rtl8821ce

P.S. Confirm that Secure Boot is disabled in you BIOS, as it's known to interfere with device drivers.


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deepakdeshp
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Re: Low wi-fi strength at 44%

Post by deepakdeshp »

Thanks hglee
There was marginal improvement from Antenna 1 to Antenna 2 a gain of 2. The output of the commands suggested is

Code: Select all

 sudo rmmod rtl8821ce
[sudo] password for uma:    
(base) uma@uma ~/Downloads $ sudo modprobe rtl8821ce ant_sel=1
(base) uma@uma ~/Downloads $ sudo iwlist wlo1 scan | grep -i qual
                    Quality=90/100  Signal level=-69 dBm  
(base) uma@uma ~/Downloads $ sudo rmmod rtl8821ce
(base) uma@uma ~/Downloads $ sudo modprobe rtl8821ce ant_sel=2
(base) uma@uma ~/Downloads $ sudo iwlist wlo1 scan | grep -i qual
                    Quality=92/100  Signal level=-72 dBm  
(base) uma@uma ~/Downloads $ echo "options rtl8821ce ant_sel=2" | sudo tee /etc/modprobe.d/rtl8821ce_ant.conf
options rtl8821ce ant_sel=2
(base) uma@uma ~/Downloads $ sudo apt-get install -y sysfsutils>/dev/null&&systool -vm rtl8821ce
Module = "rtl8821ce"

  Attributes:
    coresize            = "1794048"
    initsize            = "0"
    initstate           = "live"
    refcnt              = "0"
    srcversion          = "D8BF9408BB2A92FDDB87572"
    taint               = "OE"
    uevent              = <store method only>
    version             = "v5.5.2.1_35598.20191029"

  Parameters:
    if2name             = "wlan%d"
    ifname              = "wlan%d"
    rtw_FileMaskEfuse   = "0"
    rtw_GLNA_type       = "0"
    rtw_OffEfuseMask    = "0"
    rtw_RFE_type        = "64"
    rtw_TxBBSwing_2G    = "255"
    rtw_TxBBSwing_5G    = "255"
    rtw_adaptivity_en   = "0"
    rtw_adaptivity_mode = "0"
    rtw_adaptivity_th_edcca_hl_diff= "0"
    rtw_adaptivity_th_l2h_ini= "0"
    rtw_ampdu_enable    = "1"
    rtw_amplifier_type_2g= "0"
    rtw_amplifier_type_5g= "0"
    rtw_ant_num         = "0"
    rtw_antdiv_cfg      = "2"
    rtw_antdiv_type     = "0"
    rtw_btcoex_enable   = "2"
    rtw_busy_thresh     = "40"
    rtw_bw_mode         = "33"
    rtw_ch_switch_offload= "0"
    rtw_channel_plan    = "255"
    rtw_channel         = "1"
    rtw_check_hw_status = "0"
    rtw_chip_version    = "0"
    rtw_country_code    = "��"
    rtw_decrypt_phy_file= "0"
    rtw_drv_ant_band_switch= "1"
    rtw_dynamic_agg_enable= "1"
    rtw_en_gro          = "1"
    rtw_en_napi         = "1"
    rtw_enusbss         = "0"
    rtw_excl_chs        = 
    rtw_full_ch_in_p2p_handshake= "0"
    rtw_hiq_filter      = "1"
    rtw_ht_enable       = "1"
    rtw_hw_wps_pbc      = "0"
    rtw_hwpdn_mode      = "2"
    rtw_hwpwrp_detect   = "0"
    rtw_initmac         = "(null)"
    rtw_ips_mode        = "1"
    rtw_iqk_fw_offload  = "1"
    rtw_lbkmode         = "0"
    rtw_load_phy_file   = "68"
    rtw_low_power       = "0"
    rtw_lowrate_two_xmit= "1"
    rtw_lps_chk_by_tp   = "1"
    rtw_lps_level       = "0"
    rtw_max_bss_cnt     = "0"
    rtw_max_roaming_times= "2"
    rtw_mc2u_disable    = "0"
    rtw_mp_mode         = "0"
    rtw_network_mode    = "0"
    rtw_notch_filter    = "0"
    rtw_pci_aspm_enable = "0"
    rtw_phy_file_path   = "/lib/firmware/"
    rtw_pll_ref_clk_sel = "15"
    rtw_power_mgnt      = "2"
    rtw_powertracking_type= "64"
    rtw_pwrtrim_enable  = "1"
    rtw_qos_opt_enable  = "0"
    rtw_rf_config       = "8"
    rtw_rfintfs         = "2"
    rtw_rx_ampdu_amsdu  = "0"
    rtw_rx_ampdu_sz_limit_1ss= 
    rtw_rx_ampdu_sz_limit_2ss= 
    rtw_rx_ampdu_sz_limit_3ss= 
    rtw_rx_ampdu_sz_limit_4ss= 
    rtw_rx_stbc         = "1"
    rtw_rxgain_offset_2g= "0"
    rtw_rxgain_offset_5gh= "0"
    rtw_rxgain_offset_5gl= "0"
    rtw_rxgain_offset_5gm= "0"
    rtw_single_ant_path = "0"
    rtw_smart_ps        = "2"
    rtw_special_rf_path = "0"
    rtw_switch_usb_mode = "0"
    rtw_target_tx_pwr_2g_a= 
    rtw_target_tx_pwr_2g_b= 
    rtw_target_tx_pwr_2g_c= 
    rtw_target_tx_pwr_2g_d= 
    rtw_target_tx_pwr_5g_a= 
    rtw_target_tx_pwr_5g_b= 
    rtw_target_tx_pwr_5g_c= 
    rtw_target_tx_pwr_5g_d= 
    rtw_tsf_update_pause_factor= "200"
    rtw_tsf_update_restore_factor= "5"
    rtw_tx_ampdu_amsdu  = "2"
    rtw_tx_bw_mode      = "33"
    rtw_tx_pwr_by_rate  = "2"
    rtw_tx_pwr_lmt_enable= "2"
    rtw_uapsd_ac_enable = "0"
    rtw_uapsd_max_sp    = "0"
    rtw_usb_rxagg_mode  = "2"
    rtw_vcs_type        = "1"
    rtw_vht_enable      = "1"
    rtw_vht_rx_mcs_map  = "43690"
    rtw_vrtl_carrier_sense= "2"
    rtw_wifi_spec       = "0"
    rtw_wireless_mode   = "95"
    rtw_wmm_enable      = "1"
    rtw_wmm_smart_ps    = "2"
Secure mode is disabled.
If I have helped you solve a problem, please add [SOLVED] to your first post title, it helps other users looking for help.
Regards,
Deepak

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Mint 21.1 Cinnamon AMD Ryzen3500U/8gb
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hglee
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Re: Low wi-fi strength at 44%

Post by hglee »

deepakdeshp wrote:The output of the commands suggested is

Code: Select all

Module = "rtl8821ce"

  Attributes:
    coresize            = "1794048"
    initsize            = "0"
    initstate           = "live"
    refcnt              = "0"
    srcversion          = "D8BF9408BB2A92FDDB87572"
    taint               = "OE"
    uevent              = <store method only>
    version             = "v5.5.2.1_35598.20191029"

  Parameters:
    if2name             = "wlan%d"
    ifname              = "wlan%d"
    rtw_FileMaskEfuse   = "0"
    rtw_GLNA_type       = "0"
    rtw_OffEfuseMask    = "0"
    rtw_RFE_type        = "64"
    rtw_TxBBSwing_2G    = "255"
    rtw_TxBBSwing_5G    = "255"
    rtw_adaptivity_en   = "0"
    rtw_adaptivity_mode = "0"
    rtw_adaptivity_th_edcca_hl_diff= "0"
    rtw_adaptivity_th_l2h_ini= "0"
    rtw_ampdu_enable    = "1"
    rtw_amplifier_type_2g= "0"
    rtw_amplifier_type_5g= "0"
    rtw_ant_num         = "0"
    rtw_antdiv_cfg      = "2"
    rtw_antdiv_type     = "0"
    rtw_btcoex_enable   = "2"
    rtw_busy_thresh     = "40"
    rtw_bw_mode         = "33"
    rtw_ch_switch_offload= "0"
    rtw_channel_plan    = "255"
    rtw_channel         = "1"
    rtw_check_hw_status = "0"
    rtw_chip_version    = "0"
    rtw_country_code    = "��"
    rtw_decrypt_phy_file= "0"
    rtw_drv_ant_band_switch= "1"
    rtw_dynamic_agg_enable= "1"
    rtw_en_gro          = "1"
    rtw_en_napi         = "1"
    rtw_enusbss         = "0"
    rtw_excl_chs        = 
    rtw_full_ch_in_p2p_handshake= "0"
    rtw_hiq_filter      = "1"
    rtw_ht_enable       = "1"
    rtw_hw_wps_pbc      = "0"
    rtw_hwpdn_mode      = "2"
    rtw_hwpwrp_detect   = "0"
    rtw_initmac         = "(null)"
    rtw_ips_mode        = "1"
    rtw_iqk_fw_offload  = "1"
    rtw_lbkmode         = "0"
    rtw_load_phy_file   = "68"
    rtw_low_power       = "0"
    rtw_lowrate_two_xmit= "1"
    rtw_lps_chk_by_tp   = "1"
    rtw_lps_level       = "0"
    rtw_max_bss_cnt     = "0"
    rtw_max_roaming_times= "2"
    rtw_mc2u_disable    = "0"
    rtw_mp_mode         = "0"
    rtw_network_mode    = "0"
    rtw_notch_filter    = "0"
    rtw_pci_aspm_enable = "0"
    rtw_phy_file_path   = "/lib/firmware/"
    rtw_pll_ref_clk_sel = "15"
    rtw_power_mgnt      = "2"
    rtw_powertracking_type= "64"
    rtw_pwrtrim_enable  = "1"
    rtw_qos_opt_enable  = "0"
    rtw_rf_config       = "8"
    rtw_rfintfs         = "2"
    rtw_rx_ampdu_amsdu  = "0"
    rtw_rx_ampdu_sz_limit_1ss= 
    rtw_rx_ampdu_sz_limit_2ss= 
    rtw_rx_ampdu_sz_limit_3ss= 
    rtw_rx_ampdu_sz_limit_4ss= 
    rtw_rx_stbc         = "1"
    rtw_rxgain_offset_2g= "0"
    rtw_rxgain_offset_5gh= "0"
    rtw_rxgain_offset_5gl= "0"
    rtw_rxgain_offset_5gm= "0"
    rtw_single_ant_path = "0"
    rtw_smart_ps        = "2"
    rtw_special_rf_path = "0"
    rtw_switch_usb_mode = "0"
    rtw_target_tx_pwr_2g_a= 
    rtw_target_tx_pwr_2g_b= 
    rtw_target_tx_pwr_2g_c= 
    rtw_target_tx_pwr_2g_d= 
    rtw_target_tx_pwr_5g_a= 
    rtw_target_tx_pwr_5g_b= 
    rtw_target_tx_pwr_5g_c= 
    rtw_target_tx_pwr_5g_d= 
    rtw_tsf_update_pause_factor= "200"
    rtw_tsf_update_restore_factor= "5"
    rtw_tx_ampdu_amsdu  = "2"
    rtw_tx_bw_mode      = "33"
    rtw_tx_pwr_by_rate  = "2"
    rtw_tx_pwr_lmt_enable= "2"
    rtw_uapsd_ac_enable = "0"
    rtw_uapsd_max_sp    = "0"
    rtw_usb_rxagg_mode  = "2"
    rtw_vcs_type        = "1"
    rtw_vht_enable      = "1"
    rtw_vht_rx_mcs_map  = "43690"
    rtw_vrtl_carrier_sense= "2"
    rtw_wifi_spec       = "0"
    rtw_wireless_mode   = "95"
    rtw_wmm_enable      = "1"
    rtw_wmm_smart_ps    = "2"

There are numerous useful control parameters to research, such as the receiver (RX) gain and the transmitter (TX) power.

Make notes detailing any changes you make, so they can be undone if necessary!


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Re: Low wi-fi strength at 44%

Post by deepakdeshp »

I will need to study the parameters and how to change them.
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hglee
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Re: Low wi-fi strength at 44%

Post by hglee »

deepakdeshp wrote: ⤴Tue Mar 23, 2021 8:55 am I will need to study the parameters and how to change them.


Another useful diagnostic utility is wavemon...

Code: Select all

sudo apt install wavemon

You can walk around with your laptop, as wavemon displays the signal quality changes in real-time.

The most comfortable chair isn't always the best spot for using wifi.


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freshminted
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Re: Low wi-fi strength at 44%

Post by freshminted »

Curious thing about wavemon: my 64 bit main machine will not display the histogram (F2) at all but my 32 bit netbook does, no problem. Thought it might be a ncurses thing but both have the default ncurses install.

I found LinSSID to be as good, but it has to be run with sudo.

I also had problems with RoG wifi (occasionally wouldn't reconnect after nightly suspend until a reboot), but I changed the channel the router broadcast on to one that was clear of all my neighbours' broadcasts and it's worked properly ever since (touch wood).
Complete World Domination within five years.
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