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[Bug 1574018] [NEW] Atheros AR9285 wifi does not work after warm boot

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Alistair Buxton <a.j.buxton@xxxxxxxxx>
Date: Sat, 23 Apr 2016 13:47:35 -0000
Reply-to: Bug 1574018 <1574018@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

Wifi works correctly after cold boot.

After warm boot the wifi hardware is detected correctly but cannot see
any access points.

This bug report was generated after a warm boot, ie while the bug is
happening.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  al         1515 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat Apr 23 14:44:03 2016
HibernationDevice: RESUME=UUID=8623f57e-2fc2-4a9a-bd35-73f33e1aeb59
InstallationDate: Installed on 2016-04-21 (1 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: LENOVO 20040M18
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=0f83fbb5-4903-4610-9f32-1ab22c935bb0 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-21-generic N/A
 linux-backports-modules-4.4.0-21-generic  N/A
 linux-firmware                            1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/11/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 24CN61WW
dmi.board.name: Caucasus2
dmi.board.vendor: LENOVO
dmi.board.version: Rev 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Lenovo
dmi.chassis.version: Rev 1.0
dmi.modalias: dmi:bvnLENOVO:bvr24CN61WW:bd08/11/2010:svnLENOVO:pn20040M18:pvrLenovoIdeapadS10-3t:rvnLENOVO:rnCaucasus2:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0:
dmi.product.name: 20040M18
dmi.product.version: Lenovo Ideapad S10-3t
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug xenial

** Description changed:

- as title.
+ Wifi works correctly after cold boot.
+ 
+ After warm boot the wifi hardware is detected correctly but cannot see
+ any access points.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  al         1515 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  al         1515 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Apr 23 14:44:03 2016
  HibernationDevice: RESUME=UUID=8623f57e-2fc2-4a9a-bd35-73f33e1aeb59
  InstallationDate: Installed on 2016-04-21 (1 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  MachineType: LENOVO 20040M18
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=0f83fbb5-4903-4610-9f32-1ab22c935bb0 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
-  linux-restricted-modules-4.4.0-21-generic N/A
-  linux-backports-modules-4.4.0-21-generic  N/A
-  linux-firmware                            1.157
+  linux-restricted-modules-4.4.0-21-generic N/A
+  linux-backports-modules-4.4.0-21-generic  N/A
+  linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/11/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 24CN61WW
  dmi.board.name: Caucasus2
  dmi.board.vendor: LENOVO
  dmi.board.version: Rev 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Lenovo
  dmi.chassis.version: Rev 1.0
  dmi.modalias: dmi:bvnLENOVO:bvr24CN61WW:bd08/11/2010:svnLENOVO:pn20040M18:pvrLenovoIdeapadS10-3t:rvnLENOVO:rnCaucasus2:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0:
  dmi.product.name: 20040M18
  dmi.product.version: Lenovo Ideapad S10-3t
  dmi.sys.vendor: LENOVO

** Description changed:

  Wifi works correctly after cold boot.
  
  After warm boot the wifi hardware is detected correctly but cannot see
  any access points.
+ 
+ This bug report was generated after a warm boot, ie while the bug is
+ happening.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  al         1515 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Apr 23 14:44:03 2016
  HibernationDevice: RESUME=UUID=8623f57e-2fc2-4a9a-bd35-73f33e1aeb59
  InstallationDate: Installed on 2016-04-21 (1 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  MachineType: LENOVO 20040M18
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=0f83fbb5-4903-4610-9f32-1ab22c935bb0 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/11/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 24CN61WW
  dmi.board.name: Caucasus2
  dmi.board.vendor: LENOVO
  dmi.board.version: Rev 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Lenovo
  dmi.chassis.version: Rev 1.0
  dmi.modalias: dmi:bvnLENOVO:bvr24CN61WW:bd08/11/2010:svnLENOVO:pn20040M18:pvrLenovoIdeapadS10-3t:rvnLENOVO:rnCaucasus2:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0:
  dmi.product.name: 20040M18
  dmi.product.version: Lenovo Ideapad S10-3t
  dmi.sys.vendor: LENOVO

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1574018

Title:
  Atheros AR9285 wifi does not work after warm boot

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Wifi works correctly after cold boot.

  After warm boot the wifi hardware is detected correctly but cannot see
  any access points.

  This bug report was generated after a warm boot, ie while the bug is
  happening.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  al         1515 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Apr 23 14:44:03 2016
  HibernationDevice: RESUME=UUID=8623f57e-2fc2-4a9a-bd35-73f33e1aeb59
  InstallationDate: Installed on 2016-04-21 (1 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  MachineType: LENOVO 20040M18
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=0f83fbb5-4903-4610-9f32-1ab22c935bb0 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/11/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 24CN61WW
  dmi.board.name: Caucasus2
  dmi.board.vendor: LENOVO
  dmi.board.version: Rev 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Lenovo
  dmi.chassis.version: Rev 1.0
  dmi.modalias: dmi:bvnLENOVO:bvr24CN61WW:bd08/11/2010:svnLENOVO:pn20040M18:pvrLenovoIdeapadS10-3t:rvnLENOVO:rnCaucasus2:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0:
  dmi.product.name: 20040M18
  dmi.product.version: Lenovo Ideapad S10-3t
  dmi.sys.vendor: LENOVO

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Follow ups

[Bug 1574018] Re: Atheros AR9285 wifi does not work after warm boot
From: Alistair Buxton, 2016-05-06
[Bug 1574018] Re: Atheros AR9285 wifi does not work after warm boot
From: Joseph Salisbury, 2016-05-05
[Bug 1574018] Status changed to Confirmed
From: Brad Figg, 2016-04-23