task Xorg:1042 blocked for more than 120 seconds in schedule+0x37/0x80
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xorg (Ubuntu) |
Expired
|
Medium
|
Unassigned |
Bug Description
Since system updates on or after Thursday 28th, I have been experiencing complete system freezes when attempting to do tasks such as opening a menu or a window. Compiz manages to draw a shadow around the new window, then everything freezes:
* You can SSH into the machine normally
* Audio and network work fine
* You can move the mouse cursor around
* SysRq-REISUB works
Everything else doesn't:
* Clicking
* Typing
* Ctrl-Alt-Fn
* Ctrl-Alt-Backspace (after having enabled it)
* Killing Xorg
* Occasionally, killing lightdm/compiz/etc.
This has happened both with Unity and Cinnamon, so compiz and friends are not to blame.
Xorg.org complains it is the victim:
(EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack.
(EE) [mi] mieq is *NOT* the cause. It is a victim.
(EE) [mi] EQ overflow continuing. 100 events have been dropped.
[...]
(EE) [mi] EQ overflow continuing. 1000 events have been dropped.
(EE) [mi] No further overflow reports will be reported until the clog is cleared.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace
(EE) 1: /usr/bin/X (QueuePointerEv
(EE) 2: /usr/lib/
(EE) 3: /usr/lib/
(EE) 4: /usr/bin/X (0x55b72eb04000
(EE) 5: /usr/bin/X (0x55b72eb04000
(EE) 6: /lib/x86_
(EE) 7: /lib/x86_
(EE) 8: /usr/lib/
(EE) 9: /usr/lib/
(EE) 10: /usr/lib/
(EE) 11: /usr/lib/
(EE) 12: /usr/lib/
(EE) 13: /usr/lib/
(EE) 14: /usr/lib/
(EE) 15: /usr/lib/
(EE) 16: /usr/lib/
(EE) 17: /usr/lib/
(EE) 18: /usr/lib/
(EE) 19: /usr/bin/X (0x55b72eb04000
(EE) 20: /usr/bin/X (0x55b72eb04000
(EE) 21: /usr/bin/X (0x55b72eb04000
(EE) 22: /usr/bin/X (0x55b72eb04000
(EE) 23: /lib/x86_
(EE) 24: /usr/bin/X (_start+0x29) [0x55b72eb4a6c9]
All the kernel knows is XOrg isn't responding. Not even kill -9 will make it budge.
[ 7316.307467] INFO: task Xorg:1042 blocked for more than 120 seconds.
[ 7316.307481] Not tainted 4.2.0-27-generic #32-Ubuntu
[ 7316.307484] "echo 0 > /proc/sys/
[ 7316.307488] Xorg D ffff88021e516640 0 1042 1 0x00400006
[ 7316.307497] ffff88020ef07698 0000000000000046 ffff880214a73700 ffff880211c46e00
[ 7316.307504] ffff88020ef07728 ffff88020ef08000 ffff88021e516640 7fffffffffffffff
[ 7316.307509] ffff88020fad1f28 0000000000000000 ffff88020ef076b8 ffffffff817edc37
[ 7316.307515] Call Trace:
[ 7316.307530] [<ffffffff817ed
[ 7316.307538] [<ffffffff817f0
[ 7316.307592] [<ffffffffc0229
[ 7316.307601] [<ffffffff8101d
[ 7316.307613] [<ffffffff817ed
[ 7316.307647] [<ffffffffc0201
[ 7316.307653] [<ffffffff810bd
[ 7316.307661] [<ffffffff817ef
[ 7316.307696] [<ffffffffc0202
[ 7316.307724] [<ffffffffc0202
[ 7316.307731] [<ffffffff817ef
[ 7316.307775] [<ffffffffc0244
[ 7316.307817] [<ffffffffc00a3
[ 7316.307859] [<ffffffffc0245
[ 7316.307901] [<ffffffffc0246
[ 7316.307935] [<ffffffffc00a4
[ 7316.307976] [<ffffffffc024d
[ 7316.308008] [<ffffffffc00a2
[ 7316.308037] [<ffffffffc0093
[ 7316.308061] [<ffffffffc0093
[ 7316.308087] [<ffffffffc0098
[ 7316.308103] [<ffffffffc0086
[ 7316.308110] [<ffffffff811ff
[ 7316.308116] [<ffffffff811ff
[ 7316.308122] [<ffffffff81099
[ 7316.308126] [<ffffffff8107e
[ 7316.308131] [<ffffffff8107e
[ 7316.308136] [<ffffffff8108a
[ 7316.308145] [<ffffffff81014
[ 7316.308152] [<ffffffff81211
[ 7316.308158] [<ffffffff81021
[ 7316.308165] [<ffffffff81014
[ 7316.308170] [<ffffffff817f1
The only things I know about reproducing is:
* It happens after 5pm
* It most often appens immediately after a right click
* Somehow, apt-get remove xserver-
* It started happening after this set of updates:
Start-Date: 2016-01-28 12:16:11
Upgrade: initscripts:amd64 (2.88dsf-
End-Date: 2016-01-28 12:18:59
This did not help:
Start-Date: 2016-01-29 18:48:43
Downgrade: lightdm:amd64 (1.16.7-0ubuntu1, 1.16.6-0ubuntu1), liblightdm-
End-Date: 2016-01-29 18:48:48
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: Xorg 1:7.7+7ubuntu4
ProcVersionSign
Uname: Linux 4.2.0-27-generic x86_64
.tmp.unity.
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/
CompositorRunning: compiz
CompositorUnred
CompositorUnred
CurrentDesktop: Unity
Date: Mon Feb 1 20:31:11 2016
DistUpgraded: Fresh install
DistroCodename: wily
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingI
GraphicsCard:
Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:062d]
InstallationDate: Installed on 2015-11-02 (91 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Dell Inc. Latitude E7250
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: xorg
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/01/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0V8RX3
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Latitude E7250
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.12.
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.
version.
version.
version.
version.
version.
version.
version.
tags: | added: bios-outdated-a09 |
Changed in xorg (Ubuntu): | |
importance: | Undecided → Low |
status: | New → Incomplete |
tags: |
added: latest-bios-a09 removed: bios-outdated-a09 |
Sorry for the long response time.
I proceeded to upgrade my laptop to version A09, rebooted, launched Chrome, and X froze immediately as described above. :)