Xorg freeze after [mi] EQ overflowing.

[Aurel Branzeanu]

Xorg freezes after logging in leaving some messages in Xorg.log about [mi] EQ overflowing.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1
Uname: Linux 3.19.0-22-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Mon Jun 29 11:00:23 2015
DistUpgraded: Fresh install
DistroCodename: vivid
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 4.3.26, 3.16.0-41-generic, x86_64: installed
 virtualbox, 4.3.26, 3.19.0-22-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GpuHangFrequency: Several times a day
GpuHangReproducibility: Seems to happen randomly
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 NVIDIA Corporation NV44 [GeForce 7100 GS] [10de:016a] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:0273]
InstallationDate: Installed on 2015-04-01 (88 days ago)
InstallationMedia: SARDU
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-22-generic root=UUID=a01d7e4a-9180-4f73-b6f6-b5fb1c9f94a6 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/02/2007
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BX97510J.86A.1487.2007.0902.1724
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: D975XBX
dmi.board.vendor: Intel Corporation
dmi.board.version: AAD27094-306
dmi.chassis.type: 2
dmi.modalias: dmi:bvnIntelCorp.:bvrBX97510J.86A.1487.2007.0902.1724:bd09/02/2007:svn:pn:pvr:rvnIntelCorporation:rnD975XBX:rvrAAD27094-306:cvn:ct2:cvr:
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Mon Jun 29 10:14:37 2015
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Sleep Button KEYBOARD, id 7
 input NOVATEK USB Keyboard KEYBOARD, id 8
 input NOVATEK USB Keyboard KEYBOARD, id 9
 input PS/2+USB Mouse MOUSE, id 10
xserver.errors:
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.17.1-0ubuntu3
xserver.video_driver: nouveau

[penalvch (penalvch)]

Aurel Branzeanu, thank you for reporting this and helping make Ubuntu better. To see if this already resolved, could you please test http://cdimage.ubuntu.com/daily-live/current/ and advise to the results?

[Aurel Branzeanu (thunder-riscom)]

Hello, Cristian!

Sorry for late answer, I don't know why I hadn't received by e-mail the notification about your message.

I have tried today the latest daily image of 15.10 in a VirtualBox - everything was running smoothly until I have installed the VB Guest Additions - then the image is booting, but every try to barely move a window silently crashes the VM.

Not to forgot that the host machine freezes - too. Observed that especially often the crashes are occuring when running some Qt4 based applications as Dropbox, Skype, VirtualBox.

I think it is nouveau-drm driver causing the freezes - I am attaching a file with a kernel oops from syslog which I'm getting right before the freezes.

[Aurel Branzeanu (thunder-riscom)]

Sorry, Christopher, for misspelling your name!

Found a bug with the same nouaveau signature - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1444072

[penalvch (penalvch)]

Aurel Branzeanu, could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/Kernel/MainlineBuilds ? It will allow additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where X, Y, and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream.

Once testing of the latest upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results.

Thank you for your understanding.

[Aurel Branzeanu (thunder-riscom)]

Tested on mainline generic kernel v4.2-rc3-unstable:

5 tests restarting the machine and launching Dropbox + big file copy to ntfs partition + Firefox - the issue is gone.

[penalvch (penalvch)]

Aurel Branzeanu, the next step is to fully reverse commit bisect from kernel 3.19 to 4.1.2 in order to identify the last bad commit, followed immediately by the first good one. Once this commit has been identified, then it may be reviewed as a candidate for backporting into your release. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ?

Please note, finding adjacent kernel versions is not fully commit bisecting.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Aurel Branzeanu (thunder-riscom)]

I'm not yet done with testing to find adjacent kernel :)

[Aurel Branzeanu (thunder-riscom)]

Christopher, I have tested also the 3.19.1-vivid and 3.19-vivid mainline kernels - no hangs. But as soon as I am booting the Ubuntu specific 3.19.0-24-generic - the hang occured right on the first boot.

[Aurel Branzeanu (thunder-riscom)]

3.19.0-25-generic is hanging too...

[penalvch (penalvch)]

Aurel Branzeanu, it appears to be a Ubuntu specific (i.e. downstream) issue.

[Aurel Branzeanu (thunder-riscom)]

Then, the fixed-upstream tag does not apply here.

[penalvch (penalvch)]

Aurel Branzeanu, the definition of fixed upstream is it's a downstream only issue.

[Aurel Branzeanu (thunder-riscom)]

No hangs in 3.19.0-26-generic kernel - fixed!

[penalvch (penalvch)]

Aurel Branzeanu, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1469626/comments/14 regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.