While a quirk to fix this particular instance may or may not make sense, the larger issue here is the need to be able to override the EDID being reported by the monitor. For this, we need a tool (provided by xdiagnose) to install alternate EDID files in the kernel's /lib/firmware/edid/.
** Package changed: xserver-xorg-video-intel (Ubuntu) => xdiagnose (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/992346 Title: *ERROR* EDID checksum is invalid, remainder is 161 Status in “xdiagnose” package in Ubuntu: Triaged Bug description: This computer is connected to its monitor via a VGA KVM. The display looks fine but dmesg is filled with EDID errors: [ 36.583335] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 161 [ 36.583338] Raw EDID: [ 36.583341] 10 ff ff ff ff ff ff 00 4d d9 90 11 01 01 01 01 [ 36.583343] 09 0d 21 03 0e 26 1e 8c ea 6f 89 aa 5a 4d 94 24 [ 36.583345] 1a 48 4c a1 08 00 81 80 81 40 01 21 01 01 01 01 [ 36.583347] 01 01 01 01 01 01 30 2a 00 98 51 00 2a 40 30 70 [ 36.583349] 13 00 78 2d 11 00 00 1e 00 00 00 fd 00 37 41 1c [ 36.583351] 41 0b 40 0a 20 20 20 20 20 24 00 00 00 fc 00 53 [ 36.583353] 44 4d 2d 53 39 35 0a 20 20 20 20 20 00 00 00 ff [ 36.583354] 00 34 32 35 39 39 31 33 0a 20 20 20 20 20 00 d3 Graphics tends to also break on the system after a while. I think it may occur after switching to and from another system or something but haven't pinned that down. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic-pae 3.2.14 Uname: Linux 3.2.0-23-generic-pae i686 ApportVersion: 2.0.1-0ubuntu5 Architecture: i386 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] Date: Mon Apr 30 18:49:57 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DkmsStatus: bcmwl, 5.100.82.38+bdcom, 3.2.0-17-generic-pae, i686: installed bcmwl, 5.100.82.38+bdcom, 3.2.0-19-generic-pae, i686: installed bcmwl, 5.100.82.38+bdcom, 3.2.0-23-generic-pae, i686: installed ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GraphicsCard: Intel Corporation 82G965 Integrated Graphics Controller [8086:29a2] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Intel Corporation Device [8086:514d] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120301) ProcEnviron: LANGUAGE=en_US:en TERM=xterm-256color PATH=(custom, user) LANG=C SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic-pae root=UUID=ab5cf3f2-058f-4f92-afe1-9d4bb7232c8c ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/17/2008 dmi.bios.vendor: Intel Corp. dmi.bios.version: MQ96510J.86A.1754.2008.1117.0002 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: DG965OT dmi.board.vendor: Intel Corporation dmi.board.version: AAD63733-205 dmi.chassis.type: 3 dmi.modalias: dmi:bvnIntelCorp.:bvrMQ96510J.86A.1754.2008.1117.0002:bd11/17/2008:svn:pn:pvr:rvnIntelCorporation:rnDG965OT:rvrAAD63733-205:cvn:ct3:cvr: version.compiz: compiz 1:0.9.7.6-0ubuntu1 version.libdrm2: libdrm2 2.4.32-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1 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 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xdiagnose/+bug/992346/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
