Comment 0 for bug 1173074

Before updating to Raring yesterday, I first fully disabled the Xorg-edgers PPA (by ppa-purge) and was therefore switched back to the Nouveau driver. Then updated my system from Quantal to Raring. Afterwards, I noticed that after a suspend/resume the greeter would not appear or hang completely. I was intermittently able to move the cursor, but the GUI would not respond to hovering or clicking.

I did not experience this bug in Quantal with kernel 3.5, but I rather quickly switched to the proprietary driver for performance reasons.

I am on a laptop with NVidia GeForce 130M video card on Raring with kernel 3.8.0, no experimental drivers in use. Attached is also a dmesg log from a previous time this occurred, with me trying to recover from the situation by various means - there are a lot of nouveau-related error messages in it. Ctrl-alt-backspace does nothing, SysRq+K does what it is supposed to do but to no avail, restarting lightdm obviously does not help.

To reproduce:
1. Boot
2. Suspend
3. Resume

Observed behaviour:
The greeter does not appear or hangs completely, switching to another VT is initially impossible, after a certain period of time nouveau starts spitting out error messages to the screen and it is then again possible to switch to another VT. Sometimes X randomly restarts and shows the boot-time greeter, where I can log in, but after that the system freezes again.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Fri Apr 26 09:49:56 2013
DistUpgraded: 2013-04-25 18:48:41,818 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 4.2.10, 3.5.0-28-generic, x86_64: installed
 virtualbox, 4.2.10, 3.8.0-19-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GpuHangFrequency: Several times a week
GpuHangReproducibility: Occurs more often under certain circumstances
GpuHangStarted: I don't know
GraphicsCard:
 NVIDIA Corporation G96M [GeForce GT 130M] [10de:0652] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Samsung Electronics Co Ltd Device [144d:c520]
InstallationDate: Installed on 2012-12-20 (126 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: SAMSUNG ELECTRONICS CO., LTD. R710
MarkForUpload: True
PlymouthDebug: Error: [Errno 13] Permission denied: '/var/log/plymouth-debug.log'
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic root=/dev/mapper/ubuntu-root ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: Upgraded to raring on 2013-04-25 (0 days ago)
dmi.bios.date: 12/17/2009
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 11SV.MP00.20091217.WZW
dmi.board.name: R710
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr11SV.MP00.20091217.WZW:bd12/17/2009:svnSAMSUNGELECTRONICSCO.,LTD.:pnR710:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR710:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
dmi.product.name: R710
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Fri Apr 26 09:46:29 2013
xserver.configfile: default
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: 2:1.13.3-0ubuntu6
xserver.video_driver: nouveau