> On 9 Nov 2017, at 11:19 PM, Menachem Shapiro <email address hidden> wrote:
> 
> I just updated to Lubuntu 17.10 and experienced this issue. I have a
> Qualcomm Atheros QCA9377 card, and kernel version 4.13.0-16-generic had
> this same issue. I reverted back to 4.10.0-38-generic and the problem
> went away.
> 
> I'm waiting for the next kernel release to see if that solves the
> problem.

The Linux kernel in -proposed should fix the issue.

> 
> See also this thread: https://askubuntu.com/questions/965856/kworker-
> blocked-for-more-than-120-seconds-ubuntu-17-10/967440
> 
> -- 
> You received this bug notification because you are subscribed to linux
> in Ubuntu.
> https://bugs.launchpad.net/bugs/1724317
> 
> Title:
>  Shutdown hangs / no standby - possible Wifi-bug in the kernel
> 
> Status in linux package in Ubuntu:
>  Confirmed
> 
> Bug description:
>  The Shutdown-process hangs. After about two minutes the following
>  message is displayed:
> 
>  Oct 17 18:47:06 Kahlan kernel: [  363.170588] INFO: task kworker/u8:2:186 blocked for more than 120 seconds.
>  Oct 17 18:47:06 Kahlan kernel: [  363.170592]       Tainted: P           OE   4.13.0-12-generic #13-Ubuntu
>  Oct 17 18:47:06 Kahlan kernel: [  363.170593] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> 
>  Two Minutes later this message is displayed:
>  Oct 17 18:49:07 Kahlan kernel: [  484.008650] INFO: task kworker/u8:2:186 blocked for more than 120 seconds.
>  Oct 17 18:49:07 Kahlan kernel: [  484.008659]       Tainted: P           OE   4.13.0-12-generic #13-Ubuntu
>  Oct 17 18:49:07 Kahlan kernel: [  484.008662] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> 
>  This message repeates itself. If I am lucky, my laptop shuts down
>  after some time.
> 
>  Also standby does not work. I think my wifi-adapter causes this
>  problem.
> 
>  With Ubuntu 17.04 or Suse 42.3 I cannot reproduce this problem. I
>  found a bug report in the Arch Bug System
>  (https://bugs.archlinux.org/task/55872
> 
>  In my laptop I have also a Qualcomm Atheros Adapter. Perhaps the
>  linuxkernel has a bug?
> 
>  ProblemType: Bug
>  DistroRelease: Ubuntu 17.10
>  Package: xorg 1:7.7+19ubuntu3
>  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
>  Uname: Linux 4.13.0-16-generic x86_64
>  ApportVersion: 2.20.7-0ubuntu3
>  Architecture: amd64
>  CompositorRunning: None
>  CurrentDesktop: KDE
>  Date: Tue Oct 17 19:08:32 2017
>  DistUpgraded: Fresh install
>  DistroCodename: artful
>  DistroVariant: kubuntu
>  DkmsStatus:
>   bbswitch, 0.8, 4.13.0-12-generic, x86_64: installed
>   bbswitch, 0.8, 4.13.0-16-generic, x86_64: installed
>   nvidia-384, 384.90, 4.13.0-12-generic, x86_64: installed
>   nvidia-384, 384.90, 4.13.0-16-generic, x86_64: installed
>  ExtraDebuggingInterest: No
>  GraphicsCard:
>   Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA controller])
>     Subsystem: Acer Incorporated [ALI] HD Graphics 5500 [1025:0962]
>  InstallationDate: Installed on 2017-10-07 (10 days ago)
>  InstallationMedia: Kubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926)
>  MachineType: Acer Aspire VN7-571G
>  ProcEnviron:
>   LANGUAGE=de
>   PATH=(custom, no user)
>   XDG_RUNTIME_DIR=<set>
>   LANG=de_DE.UTF-8
>   SHELL=/bin/bash
>  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-16-generic.efi.signed root=UUID=d5a4b134-b39a-4764-99bd-208c9e504fa8 ro quiet splash vt.handoff=7
>  SourcePackage: xorg
>  Symptom: display
>  UpgradeStatus: No upgrade log present (probably fresh install)
>  dmi.bios.date: 01/08/2015
>  dmi.bios.vendor: Insyde Corp.
>  dmi.bios.version: V1.14
>  dmi.board.asset.tag: No Asset Tag
>  dmi.board.name: Aspire VN7-571G
>  dmi.board.vendor: Acer
>  dmi.board.version: V1.14
>  dmi.chassis.asset.tag: No Asset Tag
>  dmi.chassis.type: 10
>  dmi.chassis.vendor: Acer
>  dmi.chassis.version: V1.14
>  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.14:bd01/08/2015:svnAcer:pnAspireVN7-571G:pvrV1.14:rvnAcer:rnAspireVN7-571G:rvrV1.14:cvnAcer:ct10:cvrV1.14:
>  dmi.product.family: Broadwell System
>  dmi.product.name: Aspire VN7-571G
>  dmi.product.version: V1.14
>  dmi.sys.vendor: Acer
>  version.compiz: compiz N/A
>  version.libdrm2: libdrm2 2.4.83-1
>  version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.2-0ubuntu1
>  version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.2-0ubuntu1
>  version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
>  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
>  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
>  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20170309-0ubuntu1
>  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
> 
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