I never get it with chromium, but I do with mplayer when the window size is
larger than a quarter of my screen. Not reliable reproduction. Seems to be
a race that happens once every 30 minutes or so at that size.

On Mon, May 11, 2015 at 6:39 AM, Simon John <email address hidden>
wrote:

> affects me too on debian scratch/sid.
>
> all the "fixes" from google appear to be disable nouveau (nomodeset) and
> install the proprietary drivers, which isn't helpful.
>
> i can still ssh into the box, but anything that was running a gui has
> crashed (defunct), here's some output i got in dmesg:
>
> [116651.047961] nouveau E[gnome-shell[1436]] multiple instances of buffer
> 256 on validation list
> [116651.047965] nouveau E[gnome-shell[1436]] validate_init
> [116651.047966] nouveau E[gnome-shell[1436]] validate: -22
> [116691.791976] nouveau E[   PFIFO][0000:01:00.0] write fault at
> 0x000a420000 [PAGE_NOT_PRESENT] from PGRAPH/GPC0/PROP on channel
> 0x007f9ee000 [gnome-shell[1436]]
> [116691.791980] nouveau E[   PFIFO][0000:01:00.0] PGRAPH engine fault on
> channel 5, recovering...
> [116758.244902] nouveau E[     DRM] GPU lockup - switching to software
> fbcon
> [116773.237541] nouveau E[Xorg[1023]] failed to idle channel 0xcccc0000
> [Xorg[1023]]
> [116788.222848] nouveau E[Xorg[1023]] failed to idle channel 0xcccc0000
> [Xorg[1023]]
> [116788.222899] [sched_delayed] sched: RT throttling activated
> [116788.223033] nouveau E[   PFIFO][0000:01:00.0] read fault at
> 0x000001b000 [PAGE_NOT_PRESENT] from PFIFO/BAR_READ on channel 0x007fb5e000
> [unknown]
> [116803.328066] nouveau E[gnome-shell[1436]] failed to idle channel
> 0xcccc0000 [gnome-shell[1436]]
> [116818.313425] nouveau E[gnome-shell[1436]] failed to idle channel
> 0xcccc0000 [gnome-shell[1436]]
>
> things that seem to trigger it are screensaver and google chrome, but
> that could be coinsidence.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1291574
>
> Title:
>   nouveau DRM GPU lockup, PFIFO unhandled status 0x00800000
>
> Status in xserver-xorg-video-nouveau package in Ubuntu:
>   Confirmed
>
> Bug description:
>   Usually seen on large screen transitions, often in browser windows.
>   Display freezes, and processes disappear.   klog starts with
>
>   nouveau ![   PFIFO][0000:01:00.0] unhandled status 0x00800000
>   nouveau E[     DRM] GPU lockup - switching to software fbcon
>
>   and thereafter fills with
>
>   nouveau E[Xorg[1868]] failed to idle channel 0xcccc0001 [Xorg[1868]]
>   nouveau E[Xorg[1868]] failed to idle channel 0xcccc0001 [Xorg[1868]]
>   nouveau E[   PFIFO][0000:01:00.0] playlist 0 update timeout
>   nouveau E[Xorg[1868]] failed to idle channel 0xcccc0000 [Xorg[1868]]
>   nouveau E[Xorg[1868]] failed to idle channel 0xcccc0000 [Xorg[1868]]
>   nouveau E[   PFIFO][0000:01:00.0] channel 2 [Xorg[1868]] kick timeout
>   nouveau E[   PFIFO][0000:01:00.0] channel 2 [Xorg[1868]] kick timeout
>   nouveau E[   PFIFO][0000:01:00.0] playlist 0 update timeout
>
>   repeated about every 150 seconds.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 14.04
>   Package: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
>   ProcVersionSignature: Ubuntu 3.13.0-16.36-generic 3.13.5
>   Uname: Linux 3.13.0-16-generic i686
>   .tmp.unity.support.test.1:
>
>   ApportVersion: 2.13.3-0ubuntu1
>   Architecture: i386
>   CompizPlugins:
> [core,bailer,detection,composite,opengl,decor,regex,snap,imgpng,move,animation,mousepoll,compiztoolbox,resize,grid,unitymtgrabhandles,workarounds,gnomecompat,vpswitch,place,expo,wall,fade,ezoom,session,scale,unityshell]
>   CompositorRunning: None
>   Date: Wed Mar 12 15:10:37 2014
>   DistUpgraded: 2010-09-09 17:07:06,366 DEBUG enabling apt cron job
>   DistroCodename: trusty
>   DistroVariant: ubuntu
>   ExtraDebuggingInterest: Yes, including running git bisection searches
>   GraphicsCard:
>    NVIDIA Corporation GK107 [GeForce GTX 650] [10de:0fc6] (rev a1)
> (prog-if 00 [VGA controller])
>      Subsystem: eVga.com. Corp. Device [3842:2650]
>   LightdmGreeterLog:
>    (lightdm-gtk-greeter:5159): Gtk-CRITICAL **: gtk_container_foreach:
> assertion 'GTK_IS_CONTAINER (container)' failed
>
>    (lightdm-gtk-greeter:5159): Gtk-CRITICAL **: gtk_container_foreach:
> assertion 'GTK_IS_CONTAINER (container)' failed
>
>    (lightdm-gtk-greeter:5159): Gtk-CRITICAL **: gtk_container_foreach:
> assertion 'GTK_IS_CONTAINER (container)' failed
>   MachineType: MSI MS-7673
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-16-generic
> root=UUID=44b47c66-6a6d-465d-a0b6-e03e703616cb ro nomdmonddf nomdmonisw
> nomdmonddf nomdmonisw
>   SourcePackage: xserver-xorg-video-nouveau
>   UpgradeStatus: Upgraded to trusty on 2010-09-09 (1279 days ago)
>   dmi.bios.date: 03/31/2011
>   dmi.bios.vendor: American Megatrends Inc.
>   dmi.bios.version: V1.10
>   dmi.board.asset.tag: To be filled by O.E.M.
>   dmi.board.name: P67A-C43 (MS-7673)
>   dmi.board.vendor: MSI
>   dmi.board.version: 1.0
>   dmi.chassis.asset.tag: To Be Filled By O.E.M.
>   dmi.chassis.type: 3
>   dmi.chassis.vendor: MSI
>   dmi.chassis.version: 1.0
>   dmi.modalias:
> dmi:bvnAmericanMegatrendsInc.:bvrV1.10:bd03/31/2011:svnMSI:pnMS-7673:pvr1.0:rvnMSI:rnP67A-C43(MS-7673):rvr1.0:cvnMSI:ct3:cvr1.0:
>   dmi.product.name: MS-7673
>   dmi.product.version: 1.0
>   dmi.sys.vendor: MSI
>   version.compiz: compiz 1:0.9.11+14.04.20140305-0ubuntu1
>   version.libdrm2: libdrm2 2.4.52-1
>   version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0~rc3-0ubuntu3
>   version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
>   version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0~rc3-0ubuntu3
>   version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu6
>   version.xserver-xorg-input-evdev: xserver-xorg-input-evdev
> 1:2.8.2-1ubuntu2
>   version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
>   version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.99.910-0ubuntu1
>   version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
> 1:1.0.10-1ubuntu2
>   xserver.bootTime: Wed Mar 12 15:10:05 2014
>   xserver.configfile: default
>   xserver.devices:
>    input        Power Button         KEYBOARD, id 6
>    input        Power Button         KEYBOARD, id 7
>    input        daskeyboard          KEYBOARD, id 8
>    input        daskeyboard          KEYBOARD, id 9
>    input        Logitech USB-PS/2 Optical 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: 2:1.15.0-1ubuntu6
>   xserver.video_driver: nouveau
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1291574/+subscriptions
>