Wifi not showing an option for wireless connection. LM 20 Cinnamon 4.6.7

Questions about WIFI networks and devices
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diadcm
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Wifi not showing an option for wireless connection. LM 20 Cinnamon 4.6.7

Post by diadcm »

Hello all, I'm new to Linux.I bought a cheap mini-PC and decided to try Linux. I was able to install the OS, but since then there's been no option for wireless connection. I've read a few other posts about this but it seems there isn't one clear answer. I'll post some information from the terminal that I saw was asked for in another post.

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System:    Kernel: 5.4.0-52-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 4.6.7 
           Distro: Linux Mint 20 Ulyana base: Ubuntu 20.04 focal 
Machine:   Type: Desktop System: BESSTAR(HK)LIMITED product: Z83-W v: N/A serial: <filter> 
           Mobo: BESSTAR Tech model: Cherry Trail CR serial: <filter> UEFI: American Megatrends v: YB1007 date: 03/07/2018 
CPU:       Topology: Quad Core model: Intel Atom x5-Z8350 bits: 64 type: MCP arch: Airmont rev: 4 L2 cache: 1024 KiB 
           flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 11520 
           Speed: 480 MHz min/max: 480/1920 MHz Core speeds (MHz): 1: 831 2: 784 3: 516 4: 496 
Graphics:  Device-1: Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics driver: i915 v: kernel 
           bus ID: 00:02.0 
           Display: x11 server: X.Org 1.20.8 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa DRI Intel HD Graphics (CHV) v: 4.6 Mesa 20.0.8 direct render: Yes 
Audio:     Device-1: Intel HDMI/DP LPE Audio driver: HdmiLpeAudio message: bus/chip ids unavailable 
           Device-2: bytcr-rt5651 driver: bytcr-rt5651 message: bus/chip ids unavailable 
           Sound Server: ALSA v: k5.4.0-52-generic 
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 v: kernel port: e000 bus ID: 01:00.0 
           IF: enp1s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
           Device-2: Realtek 802.11ac NIC type: USB driver: btusb bus ID: 1-1:5 
Drives:    Local Storage: total: 88.81 GiB used: 14.87 GiB (16.7%) 
           ID-1: /dev/mmcblk0 model: DF4032 size: 29.12 GiB 
           ID-2: /dev/mmcblk2 model: GC1S5 size: 59.69 GiB 
Partition: ID-1: / size: 28.04 GiB used: 14.85 GiB (53.0%) fs: ext4 dev: /dev/mmcblk0p2 
Sensors:   System Temperatures: cpu: 55.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 219 Uptime: 18m Memory: 1.87 GiB used: 1.08 GiB (57.8%) Init: systemd runlevel: 5 Compilers: gcc: 9.3.0 
           Shell: bash v: 5.0.17 inxi: 3.0.38 

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0: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: hci1: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: hci2: Bluetooth
	Soft blocked: no
	Hard blocked: no

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lo        no wireless extensions.

enp1s0    no wireless extensions.

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Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 
           IF: enp1s0 state: up speed: 1000 Mbps duplex: full mac: 84:39:be:6b:7c:59 
           Device-2: Realtek 802.11ac NIC type: USB driver: btusb 
sleeper12
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Re: Wifi not showing an option for wireless connection. Cinnamin 4.6.7

Post by sleeper12 »

If secure boot is on, turn it off in Bios/Uefi. Check:

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 mokutil --sb-state 
diadcm
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Re: Wifi not showing an option for wireless connection. Cinnamin 4.6.7

Post by diadcm »

This was the reply I got

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This system doesn't support Secure Boot
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Larry78723
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Re: Wifi not showing an option for wireless connection. Cinnamin 4.6.7

Post by Larry78723 »

Please post the results for each of the following commands. Here is how:

Open a terminal window (Ctrl-Alt-t). Make it fullscreen to avoid unneeded linebreaks or chopped lines. Execute the following commands, one at a time.

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 iwconfig

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lsusb

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 lspci 
Mark the complete text output which each command will display with your mouse.
Press the keyboard shortcut <Shift><Ctrl>C to copy the marked text into the clipboard.
Enclose the results for each command between the code markers by selecting </> from the mini toolbar above the textbox where you type your reply then paste <Ctrl>V them in your reply between the code markers.

The results will help us to help you.

Larry
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diadcm
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Re: Wifi not showing an option for wireless connection. LM 20 Cinnamon 4.6.7

Post by diadcm »

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iwconfig
lo        no wireless extensions.

usb0      no wireless extensions.

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lsusb
Bus 004 Device 002: ID 174c:3074 ASMedia Technology Inc. ASM1074 SuperSpeed hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 007: ID 0408:7090 Quanta Computer, Inc. ASM107x
Bus 003 Device 006: ID 0408:7a10 Quanta Computer, Inc. 
Bus 003 Device 005: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 003 Device 004: ID 04d9:fc4d Holtek Semiconductor, Inc. 
Bus 003 Device 003: ID 0bda:c820 Realtek Semiconductor Corp. ASM107x
Bus 003 Device 002: ID 174c:2074 ASMedia Technology Inc. ASM1074 High-Speed hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 26ce:01a2 ASRock LED Controller
Bus 001 Device 004: ID 05e3:0610 Genesys Logic, Inc. 4-port hub
Bus 001 Device 003: ID 062a:8508 MosArt Semiconductor Corp. USB Keyboard
Bus 001 Device 006: ID 04e8:6863 Samsung Electronics Co., Ltd Galaxy series, misc. (tethering mode)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

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lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Root Complex
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge
00:01.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
00:05.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B]
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B]
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse Device 24: Function 7
01:00.0 Non-Volatile memory controller: Sandisk Corp Device 5009 (rev 01)
02:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43ee
02:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] Device 43eb
02:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43e9
03:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43ea
03:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43ea
03:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43ea
03:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43ea
03:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43ea
03:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43ea
05:00.0 Non-Volatile memory controller: Toshiba Corporation Device 011a
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
0a:00.0 VGA compatible controller: NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] (rev a1)
0a:00.1 Audio device: NVIDIA Corporation GP102 HDMI Audio Controller (rev a1)
0b:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Function
0c:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Reserved SPP
0c:00.1 Encryption controller: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Cryptographic Coprocessor PSPCPP
0c:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller
0c:00.4 Audio device: Advanced Micro Devices, Inc. [AMD] Starship/Matisse HD Audio Controller
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Larry78723
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Re: Wifi not showing an option for wireless connection. LM 20 Cinnamon 4.6.7

Post by Larry78723 »

You'll need to build the correct driver. Open a terminal and run each of the following commands, one line at a time.

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sudo apt install build-essential -y
mkdir -p ~/build
cd ~/build
sudo apt install git
git clone https://github.com/brektrou/rtl8821CU.git
cd rtl8821CU
make
sudo make install
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HenryHunter
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Re: Wifi not showing an option for wireless connection. LM 20 Cinnamon 4.6.7

Post by HenryHunter »

Larry78723 wrote:
Wed Oct 28, 2020 8:42 am
Thank Larry78723
I have a similar problem, your idea helped me solve it.

HenryHunter
Last edited by karlchen on Fri Oct 30, 2020 9:42 am, edited 1 time in total.
Reason: shortened full quote of Larry's post right above
diadcm
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Re: Wifi not showing an option for wireless connection. LM 20 Cinnamon 4.6.7

Post by diadcm »

Thanks Larry!
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Larry78723
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Re: Wifi not showing an option for wireless connection. LM 20 Cinnamon 4.6.7

Post by Larry78723 »

Glad that got you both working.
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