Christian Weiske, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .
If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report: apport-collect -p xserver-xorg-video-ati REPLACE-WITH-BUG-NUMBER Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Changed in: xserver-xorg-video-ati (Ubuntu) Importance: High => Low ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/914437 Title: Second display not recognized anymore; "EDID checksum is invalid" Status in “xserver-xorg-video-ati” package in Ubuntu: Incomplete Bug description: After upgrading from Ubuntu 11.04 to 11.10, the second display is not recognized anymore. It's an amd64 system with a Radeon HD 5700 graphics card. The first display, a Samsung P2250, connected via DVI, is recognized flawlessly. The second display, a Sony SDM-S51, connected with a VGA cable and a VGA-to-DVI-converter, is not recognized anymore. dmesg is full of the following message: [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 254 ... radeon 0000:01:00.0: DVI-I-2: EDID block 0 invalid. [drm:radeon_dvi_detect] *ERROR* DVI-I-2: probed a monitor but no|invalid EDID I verified this bug on a completely new system (clean install, all updates). Also reported as #24752 on landscape.canonical.com (" Second display not recognized anymore"). Full error message: [ 24.032103] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 254 [ 24.032104] Raw EDID: [ 24.032106] <3>ff ff ff ff ff ff ff ff 4d d9 50 1e 01 01 01 01 ........M.P..... [ 24.032107] <3>01 0c 01 02 0e 1e 17 78 ea 7e a9 a0 58 4e 96 25 .......x.~..XN.% [ 24.032109] <3>1e 48 4c a1 08 00 01 01 01 01 01 01 01 01 01 01 .HL............. [ 24.032110] <3>01 01 01 01 01 01 64 19 00 40 41 00 26 30 18 88 ......d..@A.&0.. [ 24.032112] <3>36 00 30 e4 10 00 00 18 00 00 00 fd 00 30 41 1c 6.0..........0A. [ 24.032113] <3>3d 0a 00 0a 20 20 20 20 20 20 00 00 00 fc 00 53 =... .....S [ 24.032115] <3>44 4d 2d 53 35 31 0a 20 20 20 20 20 00 00 00 ff DM-S51. .... [ 24.032116] <3>00 34 35 32 37 39 35 35 0a 20 20 20 20 20 00 97 .4527955. .. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: xserver-xorg-video-radeon 1:6.14.99~git20110811.g93fc084-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9 Uname: Linux 3.0.0-14-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu4 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,resize,move,mousepoll,gnomecompat,snap,vpswitch,regex,grid,place,imgpng,wall,session,unitymtgrabhandles,animation,expo,workarounds,ezoom,fade,scale,unityshell] CompositorRunning: compiz Date: Tue Jan 10 20:07:50 2012 DistUpgraded: Fresh install DistroCodename: oneiric DistroVariant: ubuntu ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GraphicsCard: ATI Technologies Inc Juniper [Radeon HD 5700 Series] [1002:68b8] (prog-if 00 [VGA controller]) Subsystem: ATI Technologies Inc Device [1002:e147] InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MachineType: System manufacturer System Product Name ProcEnviron: PATH=(custom, no hostname) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic root=UUID=e0b8bb68-56f0-4c33-befc-c54dae6338e6 ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-ati UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/07/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0602 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: M4A785TD-V EVO dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0602:bd01/07/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A785TD-VEVO:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.26-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3 version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/914437/+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
