Public bug reported:
I have a HP LP2475w monitor. Sometimes when the system has put it to
sleep, it fails in bringing it back up again. The screen remains blank.
Even changing virtual terminals with ctrl+alt+f1 does not work. Ssh'ing
in and running 'sudo service lightdm restart' makes it come back up
again.
This error shows up in dmesg:
[18380.721810] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
invalid, remainder is 125
This monitor worked flawlessly on my previous computer which had NVidia
+ the binary driver.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-7.15-generic 3.8.0
Uname: Linux 3.8.0-7-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.8-0ubuntu4
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: Error: command ['gsettings', 'get',
'org.compiz.opengl:/org/compiz/', 'unredirect-driver-blacklist'] failed with
exit code 1: No such key 'unredirect-driver-blacklist'
CompositorUnredirectFSW: true
Date: Thu Feb 28 14:21:03 2013
DistUpgraded: 2013-01-14 14:23:18,255 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller
[8086:0162] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Intel Corporation Device [8086:2032]
InstallationDate: Installed on 2012-10-09 (142 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120918.1)
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.8.0-7-generic
root=UUID=13f61e3f-9582-47a8-988c-a29fed44d3af ro rootflags=subvol=@ quiet
splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to raring on 2013-01-14 (44 days ago)
dmi.bios.date: 01/25/2013
dmi.bios.vendor: Intel Corp.
dmi.bios.version: EBH7710H.86A.0099.2013.0125.1400
dmi.board.name: DH77EB
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG39073-304
dmi.chassis.type: 3
dmi.modalias:
dmi:bvnIntelCorp.:bvrEBH7710H.86A.0099.2013.0125.1400:bd01/25/2013:svn:pn:pvr:rvnIntelCorporation:rnDH77EB:rvrAAG39073-304:cvn:ct3:cvr:
version.compiz: compiz 1:0.9.9~daily12.12.05-0ubuntu2
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.42-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.2-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.3-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu3
xserver.bootTime: Thu Feb 28 14:12:29 2013
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.2-0ubuntu2
xserver.video_driver: intel
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 raring running-unity ubuntu
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1135668
Title:
Intel graphics fails when bringing monitor out of sleep
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