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kouty
Asked: 2020-01-19 23:02:32 +0800 CST

wifi doesn't work directly on Ubuntu

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I have Ubuntu 18.04 in my PC together with Windows 10. When the WiFi works on Windows and I restart the computer to Ubuntu, the WiFi is OK even in Ubuntu. But when the computer is shuted down and I start with Ubuntu, there is apparently no way to start the WiFi. Can someone help me to make the WiFi available in Ubuntu directly?

I typed inxi -F as recommended in comments and the result is as follows:

System:    Host: kouty-ThinkCentre-M720q Kernel: 5.0.0-37-generic x86_64
           bits: 64
           Desktop: Gnome 3.28.4 Distro: Ubuntu 18.04.3 LTS
Machine:   Device: un-determined System: LENOVO product: 10T7004NIV v: ThinkCentre M720q serial: N/A
           Mobo: LENOVO model: 312D v: SDK0J40697 WIN 3305169475212 serial: N/A
           UEFI: LENOVO v: M1UKT47A date: 08/14/2019
CPU:       6 core Intel Core i5-8400T (-MCP-) cache: 9216 KB
           clock speeds: max: 3300 MHz 1: 3200 MHz 2: 3192 MHz 3: 3106 MHz
           4: 3288 MHz 5: 3105 MHz 6: 3105 MHz
Graphics:  Card: Intel Device 3e92
           Display Server: x11 (X.Org 1.20.4 ) driver: i915
           Resolution: [email protected]
           OpenGL: renderer: Mesa DRI Intel UHD Graphics 630 (Coffeelake 3x8 GT2)
           version: 4.5 Mesa 19.0.8
Audio:     Card Intel Cannon Lake PCH cAVS driver: snd_hda_intel
           Sound: Advanced Linux Sound Architecture v: k5.0.0-37-generic
Network:   Card-1: Intel Ethernet Connection (7) I219-V driver: e1000e
           IF: eno1 state: down mac: e8:6a:64:2d:a4:ee
           Card-2: Intel Wireless 8265 / 8275 driver: iwlwifi
           IF: wlp1s0 state: up mac: 50:76:af:56:b2:60
Drives:    HDD Total Size: 256.1GB (3.5% used)
           ID-1: /dev/sda model: SanDisk_SD9TB8W2 size: 256.1GB
Partition: ID-1: / size: 59G used: 8.4G (16%) fs: ext4 dev: /dev/sda5
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 46.0C mobo: N/A
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 253 Uptime: 2 min Memory: 1248.8/7844.9MB
           Client: Shell (bash) inxi: 2.3.56

Further I opened the "Show applications" and typed wifi and they say me I have "no wifi adapter found". So I restarted and opened Windows, the wifi started to work. I restarted again and opened Ubuntu and I have a good wifi. If I turn it off, I can "no more connect because "no wifi adapter found". Can someone explain me how I can install the right wifi adapter. I seen a lot of posts here and Ubuntu documentation, and don't know what is the right procedure.

The kernel version is Linux 5.3.0-28-generic I understand that I need some WiFi adapter congruent with Card-2: Intel Wireless 8265 / 8275 driver: iwlwifi

Update following the advise of @pilot6. I typed when the wifi doesn't work

kouty@kouty-ThinkCentre-M720q:~$ lspci -knn | grep Net -A3; rfkill list; dmesg | grep iwl
01:00.0 Network controller [0280]: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 78)
    Subsystem: Intel Corporation Dual Band Wireless-AC 8265 [8086:1010]
    Kernel modules: iwlwifi
0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
[    4.098054] iwlwifi 0000:01:00.0: enabling device (0000 -> 0002)
[    4.191186] iwlwifi: probe of 0000:01:00.0 failed with error -110
wireless wireless-access-point

3 Answers

  1. Best Answer

    just open windows 10, then open a command prompt in administrator mode (right click of the mouse) and write:

    powercfg.exe /hibernate off

    It's because Windows 10 is not really shut down but in an hibernate mode.

    Have a good day ;)

    • 1

  2. I was informed by @Pilot6 that the problem was a kernel bug or a hardware failure.

    Finally, I forced upbrade to Ubuntu 20.04 by 

    update-manager –d

    following this link, ad now the wifi works correctly.

    The kernel version has been changed to Linux 5.4.0-12-generic

    • 1

  3. From Linux Mint forum you need to upgrade your kernel. They recommend 4.10 but personally I like4.14 because it has five years of support: How to update kernel to the latest mainline version without any Distro-upgrade?

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