When i pause the notebook Acer Aspire 5720G, since i upgraded my kernel with the 3.8.0-42-generic, the computer loses xorg, no display, i have to turn off the machine and boot again to get back display/xorg. It's not freezed as far as i can guess. But display is off. My ubuntu (running gnome-classic) is a 64 bits version.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-42.62~precise1-generic 3.8.13.23
Uname: Linux 3.8.0-42-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
CompizPlugins: [core,composite,opengl,decor,resize,compiztoolbox,place,grid,workarounds,vpswitch,snap,imgpng,move,gnomecompat,scale,regex,mousepoll,session,wall,expo]
CompositorRunning: compiz
Date: Fri Jul 4 15:18:15 2014
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GpuHangFrequency: Continuously
GpuHangReproducibility: Yes, I can easily reproduce it
GpuHangStarted: Since before I upgraded
GraphicsCard:
NVIDIA Corporation G86M [GeForce 8400M GS] [10de:0427] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device [1025:011e]
InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120425-15:28
MachineType: Acer Aspire 5720
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-42-generic root=UUID=9f4ef657-61c5-4f28-b7e1-5019d4b79c92 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/10/2008
dmi.bios.vendor: Acer
dmi.bios.version: V1.45
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Nettiling
dmi.board.vendor: Acer
dmi.board.version: V1.45
dmi.chassis.type: 1
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.45
dmi.modalias: dmi:bvnAcer:bvrV1.45:bd11/10/2008:svnAcer:pnAspire5720:pvrV1.45:rvnAcer:rnNettiling:rvrV1.45:cvnAcer:ct1:cvrV1.45:
dmi.product.name: Aspire 5720
dmi.product.version: V1.45
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.7.12-0ubuntu3
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.52-1~precise1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.7
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.7
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.14
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build3
Actually, i want to add this : when i pause the computer (notebook) ubuntu (gnome-classic) closes the user session, because i hear the sound of a new session requested with password.