Qualcomm Atheros AR9227 wifi pci did not work

[Pankaj]

Qualcomm Atheros AR9227 wifi pci did not work after upgrade.

dmesg output:

   90.875175] ath: phy0: Mac Chip Rev 0xfffc0.f is not supported by this driver
[ 90.875179] ath: phy0: Unable to initialize hardware; initialization status: -95
[ 90.875182] ath9k 0000:04:05.0: Failed to initialize device
[ 90.875338] ath9k: probe of 0000:04:05.0 failed with error -95

lspci -nnk output:

04:05.0 Unclassified device [0080]: Qualcomm Atheros AR9227 Wireless Network Adapter [168c:002d] (rev 01)
 Subsystem: Qualcomm Atheros AR9227 Wireless Network Adapter [168c:0101]
 Kernel modules: ath9k

It worked earlier.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-23-generic 5.3.0-23.25
ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7
Uname: Linux 5.3.0-23-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: pks 2321 F.... pulseaudio
 /dev/snd/controlC1: pks 2321 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Sun Nov 17 09:54:51 2019
HibernationDevice: RESUME=UUID=36751e84-b0bc-4f92-93db-1e4b5ced3979
InstallationDate: Installed on 2017-04-02 (958 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
IwConfig:
 enp0s22f2u3 no wireless extensions.

 lo no wireless extensions.

 enp3s0 no wireless extensions.
MachineType: System manufacturer System Product Name
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-23-generic root=UUID=99c76891-c019-4681-afee-0266d099d50b ro persistent splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.3.0-23-generic N/A
 linux-backports-modules-5.3.0-23-generic N/A
 linux-firmware 1.183.2
RfKill:

SourcePackage: linux
UpgradeStatus: Upgraded to eoan on 2019-11-14 (2 days ago)
dmi.bios.date: 05/01/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1702
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M5A88-M
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1702:bd05/01/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM5A88-M:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Pankaj (pkscwc)]

 I cannot use wifi on my computer for internet and networking.

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

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.4-rc8/

[Pankaj (pkscwc)]

Tested. Same error. Shall attach the file also.

On Thu, Nov 21, 2019 at 2:05 PM Kai-Heng Feng <email address hidden>
wrote:

> Please test latest mainline kernel:
> https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.4-rc8/
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1852884
>
> Title:
> Qualcomm Atheros AR9227 wifi pci did not work
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852884/+subscriptions
>

[Kai-Heng Feng (kaihengfeng)]

Would it be possible for you to do a reverse kernel bisection?

First, find the first -rc kernel works and the last -rc kernel doesn’t work from http://kernel.ubuntu.com/~kernel-ppa/mainline/

Then,
$ sudo apt build-dep linux
$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
$ cd linux
$ git bisect start
$ git bisect new $(the working version you found)
$ git bisect old $(the non-working version found)
$ make localmodconfig
$ make -j`nproc` deb-pkg
Install the newly built kernel, then reboot with it.
If it doesn’t work,
$ git bisect old
Otherwise,
$ git bisect new
Repeat to "make -j`nproc` deb-pkg" until you find the commit fixes the issue.

[Pankaj (pkscwc)]

I did. I had a DVD of v14.04. it worked on it. Now, I have updated to 19.10
gradually. It is working fine.

On Thu, 21 Nov 2019, 10:31 pm Kai-Heng Feng, <email address hidden>
wrote:

> Would it be possible for you to do a reverse kernel bisection?
>
> First, find the first -rc kernel works and the last -rc kernel doesn’t
> work from http://kernel.ubuntu.com/~kernel-ppa/mainline/
>
> Then,
> $ sudo apt build-dep linux
> $ git clone git://
> git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> $ cd linux
> $ git bisect start
> $ git bisect new $(the working version you found)
> $ git bisect old $(the non-working version found)
> $ make localmodconfig
> $ make -j`nproc` deb-pkg
> Install the newly built kernel, then reboot with it.
> If it doesn’t work,
> $ git bisect old
> Otherwise,
> $ git bisect new
> Repeat to "make -j`nproc` deb-pkg" until you find the commit fixes the
> issue.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1852884
>
> Title:
> Qualcomm Atheros AR9227 wifi pci did not work
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852884/+subscriptions
>