[Ubuntu-x-swat] [Bug 1033695] Re: External HDMI Monitor does not get detected / invalid EDID checksum
Chris, you mention overriding the EDID. I have a similar problem using the i915 driver with a laptop display that fails to report its EDID. I have tried using drm_kms_helper, but I haven't gotten it to work yet. /sys/devices/pci:00/:00:02.0/drm/card0/card0-LVDS-1/edid contains correct EDID data from my firmware/edid file, but /sys/devices/pci:00/:00:02.0/drm/card0/card0-LVDS-1/modes remains empty and the driver provides incompatible modes. Could someone possibly help me? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1033695 Title: External HDMI Monitor does not get detected / invalid EDID checksum To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1033695/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1033695] Re: External HDMI Monitor does not get detected / invalid EDID checksum
Indeed, the way to handle it is to parse the EDID, repair it and then feed it back to the kernel overriding the one provided by your monitor. Or just get the vendor to supply working firmware. ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Confirmed = Invalid -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1033695 Title: External HDMI Monitor does not get detected / invalid EDID checksum To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1033695/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
Re: [Ubuntu-x-swat] [Bug 1033695] Re: External HDMI Monitor does not get detected / invalid EDID checksum
Updating my monitor's firmware fixed this issue, so I think it's rather a legit message than a bug, however, useful information could be extracted from the EDID data, so maybe some looser checking could be used. On Mon, Sep 10, 2012 at 8:49 PM, Bryce Harrington 1033...@bugs.launchpad.net wrote: Sounds like bug 992346 ** Changed in: xserver-xorg-video-intel (Ubuntu) Importance: Undecided = Medium ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are subscribed to the bug report. https://bugs.launchpad.net/bugs/1033695 Title: External HDMI Monitor does not get detected / invalid EDID checksum Status in “xserver-xorg-video-intel” package in Ubuntu: Confirmed Bug description: When connecting a Samsung Syncmaster SA350 series monitor to a Asus Zenbook UX32VD the monitor does not get detected in the Displays settings screen and spits outs alot of invalid EDID checksum messages in dmesg. Message: [ 5132.677061] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 155 [ 5132.677069] Raw EDID: [ 5132.677073]00 ff ff ff ff ff ff 00 4c 2d d2 07 38 34 30 30 [ 5132.677077]24 15 01 03 80 30 1b 78 2a 90 c1 a2 59 55 9c 27 [ 5132.677080]0e 50 54 bf ef 80 71 4f 81 00 81 40 81 80 95 00 [ 5132.677083]95 0f a9 40 b3 00 02 3a 80 18 71 38 2d 40 58 2c [ 5132.677086]ff ff ff ff ff ff ff ff 01 1d 00 72 51 d0 1e 20 [ 5132.677089]6e 28 55 00 dd 0c 11 00 00 1e 00 00 00 fd 00 32 [ 5132.677092]4b 1f 51 11 00 0a 20 20 20 20 20 20 00 00 00 fc [ 5132.677094]00 53 4d 53 32 32 41 33 35 30 48 0a 20 20 01 e1 [ 5132.677103] i915 :00:02.0: HDMI-A-1: EDID block 0 invalid. The monitor does work fine on my other Windows PC Release: Description: Ubuntu quantal (development branch) Release: 12.10 ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: xserver-xorg-video-intel 2:2.20.2-1ubuntu1 ProcVersionSignature: Ubuntu 3.5.0-8.8-generic 3.5.0 Uname: Linux 3.5.0-8-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.4-0ubuntu6 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 Date: Tue Aug 7 00:17:53 2012 DistUpgraded: Fresh install DistroCodename: quantal DistroVariant: ubuntu DkmsStatus: asus-wmi, 999.01, 3.5.0-8-generic, x86_64: installed bbswitch, 0.4.2, 3.5.0-4-generic, x86_64: installed bbswitch, 0.4.2, 3.5.0-6-generic, x86_64: installed bbswitch, 0.4.2, 3.5.0-8-generic, x86_64: installed EcryptfsInUse: Yes ExtraDebuggingInterest: Yes, GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:1507] InstallationMedia: Ubuntu 12.10 Quantal Quetzal - Alpha amd64 (20120627) MachineType: ASUSTeK COMPUTER INC. UX32VD ProcEnviron: TERM=xterm PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-8-generic root=UUID=9bb3948b-2fd3-46c4-b0bb-0ae32a87278a ro quiet splash pcie_aspm=force drm.vblankoffdelay=1 i915.semaphores=1 nmi_watchdog=0 vt.handoff=7 SourcePackage: xserver-xorg-video-intel UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/29/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX32VD.207 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX32VD dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX32VD.207:bd06/29/2012:svnASUSTeKCOMPUTERINC.:pnUX32VD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX32VD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: UX32VD dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. version.compiz: compiz 1:0.9.8+bzr3249-0ubuntu2 version.ia32-libs: ia32-libs 20090808ubuntu36 version.libdrm2: libdrm2 2.4.37-0ubuntu2 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.902-0ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-2~ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.2-1ubuntu1
[Ubuntu-x-swat] [Bug 1033695] Re: External HDMI Monitor does not get detected / invalid EDID checksum
Sounds like bug 992346 ** Changed in: xserver-xorg-video-intel (Ubuntu) Importance: Undecided = Medium ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1033695 Title: External HDMI Monitor does not get detected / invalid EDID checksum To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1033695/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1033695] Re: External HDMI Monitor does not get detected / invalid EDID checksum
** Tags added: tv-out -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1033695 Title: External HDMI Monitor does not get detected / invalid EDID checksum To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1033695/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1033695] Re: External HDMI Monitor does not get detected / invalid EDID checksum
using the read-edid package I can get the following (needed to load the 'eeprom' module first): Although it reports an invalid checksum this all seems like sensible information. decode-edid: using bus 3 (autodetected) decode-edid: decode-edid version 1.1 parse-edid: parse-edid version 2.0.0 parse-edid: EDID checksum failed - data is corrupt. Continuing anyway. # EDID version 1 revision 3 Section Monitor # Block type: 2:0 3:fd # Block type: 2:0 3:fc Identifier SMS22A350H VendorName SAM ModelName SMS22A350H # Block type: 2:0 3:fd HorizSync 31-81 VertRefresh 50-75 # Max dot clock (video bandwidth) 170 MHz # Block type: 2:0 3:fc # DPMS capabilities: Active off:yes Suspend:no Standby:no Mode1920x1080 # vfreq 60.000Hz, hfreq 67.500kHz DotClock148.50 HTimings1920 2040 2100 2200 VTimings1080 1143 1206 1125 Flags Interlace +HSync +VSync EndMode Mode1280x720 # vfreq 60.000Hz, hfreq 45.000kHz DotClock74.25 HTimings1280 1390 1430 1650 VTimings720 725 730 750 Flags +HSync +VSync EndMode # Block type: 2:0 3:fd # Block type: 2:0 3:fc EndSection -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1033695 Title: External HDMI Monitor does not get detected / invalid EDID checksum To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1033695/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1033695] Re: External HDMI Monitor does not get detected / invalid EDID checksum
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1033695 Title: External HDMI Monitor does not get detected / invalid EDID checksum To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1033695/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
