Intel wifi 3165 [8086:3165] subsystem id [8086:4010] not working properly in Ubuntu 19.10

[florin]

I have a clean install of the latest Ubuntu, 19.10, but since the live usb, a bug appeared.
I could not login to the 2.4 GHz Wifi network at home with the fresh installed Ubuntu, it says the password is wrong, but it is not.

I have Dual Band Intel AC 3165 it seems. My card appears in the Additional Drivers list with the notice that the device is not working. I can connect the 5 GHz wifi, but not the 2.4 GHz. See the attached screenshot.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-18-generic 5.3.0-18.19+1
ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
Uname: Linux 5.3.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: florin 1194 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 20 22:49:04 2019
InstallationDate: Installed on 2019-10-19 (1 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 002: ID 13d3:5652 IMC Networks TOSHIBA Web Camera - HD
 Bus 001 Device 006: ID 8087:0a2a Intel Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: TOSHIBA SATELLITE P50-C
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-18-generic root=UUID=0b07e060-55a5-4186-8670-bce4c230e596 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.3.0-18-generic N/A
 linux-backports-modules-5.3.0-18-generic N/A
 linux-firmware 1.183
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/05/2017
dmi.bios.vendor: INSYDE Corp.
dmi.bios.version: 1.50
dmi.board.name: 06F4
dmi.board.vendor: FF50
dmi.board.version: Type2 - Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: OEM Chassis ManuFacturer
dmi.chassis.version: OEM Chassis Version
dmi.modalias: dmi:bvnINSYDECorp.:bvr1.50:bd07/05/2017:svnTOSHIBA:pnSATELLITEP50-C:pvrPSPUFE-001009G6:rvnFF50:rn06F4:rvrType2-BoardVersion:cvnOEMChassisManuFacturer:ct10:cvrOEMChassisVersion:
dmi.product.family: Type1Family
dmi.product.name: SATELLITE P50-C
dmi.product.sku: PSPUFE
dmi.product.version: PSPUFE-001009G6
dmi.sys.vendor: TOSHIBA

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[You-Sheng Yang (vicamo)]

Hi, could you try backport-iwlwifi dkms from https://launchpad.net/~vicamo/+archive/ubuntu/backport-iwlwifi-dkms or mainline kernel from https://kernel.ubuntu.com/~kernel-ppa/mainline/ ?

[florin (florin-arjocu)]

I am out of the country and the hotel's wifi is not protected, so cannot test, but I will try it tomorrow night when I return home.

[florin (florin-arjocu)]

@You-Sheng @vicamo
I just tried the PPA and installed that driver. Although it sees the driver as functional in the external drivers' list, now, nothing works. I cannot connect to 2.4 GHz or 5 GHz. I had to disable that driver and restart to at least have 5GHz connection. I have 2 screenshots.

[florin (florin-arjocu)]

This takes forever and nothing works. Trying to connect it, the 5GHz connection disappears after a while and then appears again, tries to connect it, etc. So it does not work with the backported driver from PPA.

[florin (florin-arjocu)]

Not sure if I had to do something else, but I also installed 2 kernels from https://kernel.ubuntu.com/~kernel-ppa/mainline/:

1) Link: https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/2019-10-22/
linux-headers-5.4.0-997_5.4.0-997.201910212203_all.deb
linux-headers-5.4.0-997-generic_5.4.0-997.201910212203_amd64.deb
linux-image-unsigned-5.4.0-997-generic_5.4.0-997.201910212203_amd64.deb
linux-modules-5.4.0-997-generic_5.4.0-997.201910212203_amd64.deb

2) Link: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.4-rc4/
linux-headers-5.4.0-050400rc4_5.4.0-050400rc4.201910202130_all.deb
linux-headers-5.4.0-050400rc4-generic_5.4.0-050400rc4.201910202130_amd64.deb
linux-image-unsigned-5.4.0-050400rc4-generic_5.4.0-050400rc4.201910202130_amd64.deb
linux-modules-5.4.0-050400rc4-generic_5.4.0-050400rc4.201910202130_amd64.deb

After restarting the laptop, neither can connect to the 2.4 GHz connection.
Had a look at the list with external drivers, shows as not functional card, but 5 GHz connection works fine, just like before installing those drivers.

Should I do something else? Thanks.

[Emin (goldenemin)]

Confirm this issue

[You-Sheng Yang (vicamo)]

@florin two tests in need here:

[backport-iwlwifi-dkms]

1. Install backport-iwlwifi-dkms from PPA[1]:

  $ sudo add-apt-repository ppa:canonical-hwe-team/backport-iwlwifi && sudo apt-get update
  $ sudo apt-get install backport-iwlwifi-dkms

2. The installation step above should also trigger dkms module installation for current kernel. You should make sure its status is "installed" in the output of `dkms status`:

  $ dkms status
  backport-iwlwifi, 8042, 5.3.0-19-generic, x86_64: installed

3. Now reboot again and paste the dmesg log in /var/log/dmesg, not screenshots.

[mainline kernel]

1. From Ubuntu mainline kernel page[2], scroll down to the end, find the latest one, which should be v5.4-rc5. You'll need following ones:

  linux-headers-5.4.0-050400rc5_5.4.0-050400rc5.201910271430_all.deb
  linux-headers-5.4.0-050400rc5-generic_5.4.0-050400rc5.201910271430_amd64.deb
  linux-image-unsigned-5.4.0-050400rc5-generic_5.4.0-050400rc5.201910271430_amd64.deb
  linux-modules-5.4.0-050400rc5-generic_5.4.0-050400rc5.201910271430_amd64.deb

which are basically arch-indep _all and arch-dependent -generic debs. Download them and install with `dpkg -i *.deb`.

2. Reboot into the newly installed kernel. It should be the default choice because it should be the newest kernel on your system, but you might still need to interrupt grub and select the correct one.

3. Paste the dmesg log in /var/log/dmesg, not screenshots.

[1]: https://launchpad.net/~canonical-hwe-team/+archive/ubuntu/backport-iwlwifi
[2]: https://kernel.ubuntu.com/~kernel-ppa/mainline/

[florin (florin-arjocu)]

I am making a large back-up in the next few hours so cannot restart system, but will do it tonight if I am done by then.

Does the order of the above things to do matter (dkms+driver first try, latest kernel second try)?

Thank you.

[You-Sheng Yang (vicamo)]

florin, please remove the dkms package before installing mainline kernel:

  $ sudo apt purge backport-iwlwifi-dkms

They shouldn't be conflicting to each other, but when DKMS is installed, the in-tree modules won't be used.

[Marco Laspe (Rockiger) (marco-rockiger)]

@vicoma I had the same problem with Intel Corporation Wireless 8265 / 8275. Your solution worked for me.

[You-Sheng Yang (vicamo)]

Hi Marco,

Please file a new bug for a different model. With that, and some more
details about what exactly fixed your problem, then we may be able to land
the right fix into mainline/generic kernel, so that you don't bother redo
those fixes again.

Marco Laspe (Rockiger) <email address hidden> 於 2019年10月29日 週二 20:11 寫道：

> @vicoma I had the same problem with Intel Corporation Wireless 8265 /
> 8275. Your solution worked for me.
>
> --
> You received this bug notification because you are subscribed to linux
> in Ubuntu.
> https://bugs.launchpad.net/bugs/1848953
>
> Title:
> Intel wifi 3165 [8086:3165] subsystem id [8086:4010] not working
> properly in Ubuntu 19.10
>
> Status in linux package in Ubuntu:
> Confirmed
>
> Bug description:
> I have a clean install of the latest Ubuntu, 19.10, but since the live
> usb, a bug appeared.
> I could not login to the 2.4 GHz Wifi network at home with the fresh
> installed Ubuntu, it says the password is wrong, but it is not.
>
> I have Dual Band Intel AC 3165 it seems. My card appears in the
> Additional Drivers list with the notice that the device is not
> working. I can connect the 5 GHz wifi, but not the 2.4 GHz. See the
> attached screenshot.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 19.10
> Package: linux-image-5.3.0-18-generic 5.3.0-18.19+1
> ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
> Uname: Linux 5.3.0-18-generic x86_64
> ApportVersion: 2.20.11-0ubuntu8
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: florin 1194 F.... pulseaudio
> CurrentDesktop: ubuntu:GNOME
> Date: Sun Oct 20 22:49:04 2019
> InstallationDate: Installed on 2019-10-19 (1 days ago)
> InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
> Lsusb:
> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 001 Device 002: ID 13d3:5652 IMC Networks TOSHIBA Web Camera - HD
> Bus 001 Device 006: ID 8087:0a2a Intel Corp.
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> MachineType: TOSHIBA SATELLITE P50-C
> ProcFB: 0 i915drmfb
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-18-generic
> root=UUID=0b07e060-55a5-4186-8670-bce4c230e596 ro quiet splash vt.handoff=7
> RelatedPackageVersions:
> linux-restricted-modules-5.3.0-18-generic N/A
> linux-backports-modules-5.3.0-18-generic N/A
> linux-firmware 1.183
> SourcePackage: linux
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 07/05/2017
> dmi.bios.vendor: INSYDE Corp.
> dmi.bios.version: 1.50
> dmi.board.name: 06F4
> dmi.board.vendor: FF50
> dmi.board.version: Type2 - Board Version
> dmi.chassis.asset.tag: No Asset Tag
> dmi.chassis.type: 10
> dmi.chassis.vendor: OEM Chassis ManuFacturer
> dmi.chassis.version: OEM Chassis Version
> dmi.modalias:
> dmi:bvnINSYDECorp.:bvr1.50:bd07/05/2017:svnTOSHIBA:pnSATELLITEP50-C:pvrPSPUFE-001009G6:rvnFF50:rn06F4:rvrType2-BoardVersion:cvnOEMChassisManuFacturer:ct10:cvrOEMChassisVersion:
> dmi.product.family: Type1Family
> dmi.product.name: SATELLITE P50-C
> dmi.produc...

[florin (florin-arjocu)]

Hi there! I returned home and did the following:

1. Removed dkms driver
sudo apt purge backport-iwlwifi-dkms

2. Installed the latest RC mainline kernel
ls -al
total 70352
drwxr-xr-x 2 florin florin 4096 nov 4 23:37 .
drwxr-xr-x 5 florin florin 4096 nov 4 23:48 ..
-rw-r--r-- 1 florin florin 10897624 nov 4 23:36 linux-headers-5.4.0-050400rc6_5.4.0-050400rc6.201911031940_all.deb
-rw-r--r-- 1 florin florin 1179332 nov 4 23:37 linux-headers-5.4.0-050400rc6-generic_5.4.0-050400rc6.201911031940_amd64.deb
-rw-r--r-- 1 florin florin 8766748 nov 4 23:37 linux-image-unsigned-5.4.0-050400rc6-generic_5.4.0-050400rc6.201911031940_amd64.deb
-rw-r--r-- 1 florin florin 51181032 nov 4 23:37 linux-modules-5.4.0-050400rc6-generic_5.4.0-050400rc6.201911031940_amd64.deb
sudo dpkg -i *.deb

3. Restarted
4. Tested the kernel and tried to connect the 2.4 GHz network.
uname -a
Linux florin-SATELLITE-P50-C 5.4.0-050400rc6-generic #201911031940 SMP Mon Nov 4 00:43:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

5. Cannot connect 2.4, then it connects automatically to the 5 GHz.
Cheked, in the additional drivers list it looks like a not functional wifi card, just like before. In Ubuntu 19.04 it worked, BTW, something changed meanwhile.

6. /var/log/dmesg is attached.

[Sergey Pavlov (sergey-pavlov)]

Hi,
I have similar issue with AC3165 on Lenovo 720S. To be more precise I can't connect to 2.4Ghz network on new TP-Link router but able to connect to 5Ghz network. Insteresting that the issue doesn't not appear with older access point which provides only 2.4Ghz network using the same WiFi basic settings (802.11n mode, 20Mhz channel bandwith, AES encryption).

*BUT* what does solve the issue in my case is reloading of iwlwifi module after boot. I.e. doing
# modprobe -r iwlwifi
# modprobe iwlwifi
fixes 2.4Ghz connection issue with TP-Link

[John Brown (titan022)]

Also was not able to connect to any 2.4 or 5Ghz network with Intel AC3165 after a recent update. Ran sudo apt purge backport-iwlwifi-dkms restarted and now able to connect to both 2.4 and 5Ghz networks. Running 5.3.0-23-generic #25-Ubuntu SMP

[florin (florin-arjocu)]

@Serghei and @John Brown - I am curious, in your proprietary drivers list (Additional Drivers), do you have the Intel card active and enabled? In my laptop, Intel 3165 is grayed and bellow it, it says The device is not working; the checkbox is on Do not use this device.

[Sergey Pavlov (sergey-pavlov)]

Hi Florin,
in my case AC3165 is also "grayed" and marked as "The device is not working".

[florin (florin-arjocu)]

Thank you. At least I know I am not the only one!

F.
--
drumliber.ro, vezi Romania
Bucharest.Guide, ghid în București
Primul blogger de travel premiat la Gala AJTR - 15 ianuarie 2014
obiectiveturistice.drumliber.ro - proiect premiat la Gala Webstock
<http://drumliber.ro/am-luat-premiul-3-la-webstock-2012/> 2012
Duminica la ora 16:10 la Radio România Actualități / Ca Pe Roate

În joi, 12 dec. 2019 la 09:01, Sergey Pavlov <email address hidden> a
scris:

> Hi Florin,
> in my case AC3165 is also "grayed" and marked as "The device is not
> working".
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1848953
>
> Title:
> Intel wifi 3165 [8086:3165] subsystem id [8086:4010] not working
> properly in Ubuntu 19.10
>
> Status in linux package in Ubuntu:
> Confirmed
>
> Bug description:
> I have a clean install of the latest Ubuntu, 19.10, but since the live
> usb, a bug appeared.
> I could not login to the 2.4 GHz Wifi network at home with the fresh
> installed Ubuntu, it says the password is wrong, but it is not.
>
> I have Dual Band Intel AC 3165 it seems. My card appears in the
> Additional Drivers list with the notice that the device is not
> working. I can connect the 5 GHz wifi, but not the 2.4 GHz. See the
> attached screenshot.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 19.10
> Package: linux-image-5.3.0-18-generic 5.3.0-18.19+1
> ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
> Uname: Linux 5.3.0-18-generic x86_64
> ApportVersion: 2.20.11-0ubuntu8
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: florin 1194 F.... pulseaudio
> CurrentDesktop: ubuntu:GNOME
> Date: Sun Oct 20 22:49:04 2019
> InstallationDate: Installed on 2019-10-19 (1 days ago)
> InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
> Lsusb:
> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 001 Device 002: ID 13d3:5652 IMC Networks TOSHIBA Web Camera - HD
> Bus 001 Device 006: ID 8087:0a2a Intel Corp.
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> MachineType: TOSHIBA SATELLITE P50-C
> ProcFB: 0 i915drmfb
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-18-generic
> root=UUID=0b07e060-55a5-4186-8670-bce4c230e596 ro quiet splash vt.handoff=7
> RelatedPackageVersions:
> linux-restricted-modules-5.3.0-18-generic N/A
> linux-backports-modules-5.3.0-18-generic N/A
> linux-firmware 1.183
> SourcePackage: linux
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 07/05/2017
> dmi.bios.vendor: INSYDE Corp.
> dmi.bios.version: 1.50
> dmi.board.name: 06F4
> dmi.board.vendor: FF50
> dmi.board.version: Type2 - Board Version
> dmi.chassis.asset.tag: No Asset Tag
> dmi.chassis.type: 10
> dmi.chassis.vendor: OEM Chassis ManuFacturer
> dmi.chassis.version: OEM Chassis Version
> dmi.modalias:
> dmi:bvnINSYDECorp.:bvr1.50:bd07/05/2017:svnTOSHIBA:pnSATELLITEP50-C:pvrPSPUFE-001009G6:rvnFF50:rn06F4:rvrType2-BoardVersion:cvnOEMChassis...

[florin (florin-arjocu)]

Thank you. At least I know I am not the only one.

[Kai-Heng Feng (kaihengfeng)]

Do you have any DKMS installed? Please run `dkms status` to check installed DKMS.

[florin (florin-arjocu)]

@Kai-Heng Feng
I get nothing on that command ("dkms status"). I did lots of the things above, including installing kernels, dkms, removing dkms, etc. They might have been contradictory, but either way, in my case, nothing happened, the driver was always grayed and cound not connect to the 2.4GHz (5 GHz works even with the card grayed in that list of proprietary drivers).

uname -r
5.4.0-050400rc6-generic

uname -a
Linux florin-SATELLITE-P50-C 5.4.0-050400rc6-generic #201911031940 SMP Mon Nov 4 00:43:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

[Kai-Heng Feng (kaihengfeng)]

Please also try latest firmware from:
[2] https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/

[florin (florin-arjocu)]

Sorry for the question, but I am not sure how to do that. I see folders with drivers and files over there, how should I do it? Copy the content of some of them (I would guess Intel and what else?) in some folder? Thanks!

[You-Sheng Yang (vicamo)]

@florin, backup /lib/firmware folder, and clone aforementioned git repo into the same place. Power off completely for a minute or so and reboot. Detailed commands:

  $ cd /lib
  $ sudo mv firmware firmware.dpkg
  $ sudo git clone https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git firmware

When you finished testing, move the folders back:

  $ cd /lib
  $ sudo mv firmware firmware.git
  $ sudo mv firmware.dpkg firmware

[florin (florin-arjocu)]

@You-Sheng Yang (vicamo) - I have tried, it still cannot connect to the 2.4 GHz. I cannot see any visible difference, in additional drivers list the card is grayed. If you need to run commands for debugging, I am willing to help, just post sufficient detailed posts so I can run the commands.

[You-Sheng Yang (vicamo)]

@florin, I personally bought one AC 3165 chip online with the same PCI ID [8086:3165] subsystem id [8086:4010], and it works (for both 2.4G and 5G network) just fine with kernel 5.3.0-18-generic you're using as well as latest 5.3.0-45-generic, linux-firmware 1.183.5. Besides, it looks pretty normal in the Additional Drivers. DKMS driver found (but you don't need it on 5.0+ kernels).

Maybe we need to dump your wpasupplicant and NetworkManager logs? For wpa_supplicant, you can modify /lib/systemd/system/wpa_supplicant.service and add '-d' or '-dd' for debug logs:

  ExecStart=/sbin/wpa_supplicant -d ...

For NetworkManager, you can execute:

  sudo nmcli general logging level debug domain all

[florin (florin-arjocu)]

@You-Sheng Yang (vicamo)

I have done the next:
1. Added the -d parameter:
sudo gedit /lib/systemd/system/wpa_supplicant.service
ExecStart=/sbin/wpa_supplicant -d -u -s -O /run/wpa_supplicant

2. sudo nmcli general logging level debug domain all

Is there something else I can do for debugging this? I am even willign to allow someone to my computer via Teamviewer, if this could help.

I have to tell that the Wifi works, but not completely, I am on the 5GHz connection. In the harware list it shows as in the screenshot.

[florin (florin-arjocu)]

sudo apt purge backport-iwlwifi-dkms
Package 'backport-iwlwifi-dkms' is not installed, so not removed

dkms status
(shows nothing)

5.4.0-050400rc6-generic #201911031940 SMP Mon Nov 4 00:43:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

Restarted system and tried to join both wifi frequencies; only 5 GHz works.
dmesg for kernel 5.4 log attached. I will be back with kernel 5.6.

I also just installed and tried the latest mainline kernel, v5.6 (https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.6/):
-rw-r--r-- 1 florin florin 11127504 apr 4 23:17 linux-headers-5.6.0-050600_5.6.0-050600.202003292333_all.deb
-rw-r--r-- 1 florin florin 1180920 apr 4 23:18 linux-headers-5.6.0-050600-generic_5.6.0-050600.202003292333_amd64.deb
-rw-r--r-- 1 florin florin 9053444 apr 4 23:19 linux-image-unsigned-5.6.0-050600-generic_5.6.0-050600.202003292333_amd64.deb
-rw-r--r-- 1 florin florin 52319388 apr 4 23:19 linux-modules-5.6.0-050600-generic_5.6.0-050600.202003292333_amd64.deb
sudo dpkg -i *.deb

With kernel v5.6 no wifi connection works.

[florin (florin-arjocu)]

This is dmesg after installed and restarted, using the latest mainline kernel, 5.6

[You-Sheng Yang (vicamo)]

@florin,

1. from your screenshot in comment #28, that's not a big deal. backport-iwlwifi-dkms can help on outdated machines but you don't need it. However, since you don't have it installed, and yet the system still have iwlwifi module available from linux-modules-extra package, `ubuntu-drivers` mistakenly thinks you have that driver installed manually, which is a minor issue for `ubuntu-drivers`. It's fine.

2. So let's see what does wapsupplicant/nm say:

  * Please remove that 5G network from your saved networks. Or better, empty that.
  * enable wapsupplicant debug messages as you have done,
  * enable NetworkManager debug messages at boot by adding a logging section:

    [logging]
    domains=ALL:info,WIFI:debug,WIFI_SCAN:debug,PLATFORM:debug,SUPPLICANT:debug,DEVICE:debug

  * Reboot. Try to connect to your 2.4G network and then attach the outout of `journalctl -b > syslog.txt` (which would contain all your syslog of current boot, so you might what to have a check if there is any credential info before uploading).

[florin (florin-arjocu)]

I have updates, after some more use. For some reason, I can now connect to the 5GHz network, don't know why, didn't do anything myself.

I have updated to Ubuntu 20.04, but both 19.04 and the latest release work the same.

The problem is that I cannot connect to the 2.4 GHz now. So, once it was able to connect to one of them, it cannot connect to the other. The phone can do it without problems, so it is not a router problem for sure. I will also do the commands above, but have lots of meetings and cannot focus right now.

[Maciej (linean)]

Any updates on this one? I'm have the same issue with Intel Wifi 6 AX200 card. I can connect to 5GHz but for 2.4GHz I'm getting password prompt over and over. 2.4GHz works fine on other devices.

[florin (florin-arjocu)]

@Maciej - I am glad at least one works and I can use the device, although it is not reliable like this, it should work. I want to help with debugging as much as possible, but I am not sure what to do as since I had the bug, I updated the kernel serveral times + I changed to the latest release so I am not sure if the steps above should be the same for getting some good logs.

[Maciej (linean)]

I've found workaround, it was enough to disable n standard with "options iwlwifi 11n_disable=1". Now I'm able to authenticate with any hotspot.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]