** Description changed: + SRU Justification + + Impact + + Image scrambled, bad vga output, on HP 2730p, due to uneeded quirk on + intel i915 driver. + + Fix + + Remove uneeded quirk. + + Testcase + + Connect secondary monitor to vga output on affected machine. + + ======================================================================================== + If I connect a secondary monitor to my HP 2730p via VGA, the screen resolution gets detected correctly as being 1920x1080. However, the actual output sent to the monitor is 1650x1050. So a 1920x1080 picture is somehow sent with 1650x1050, rendering it completely unreadable. It looks like an extreme tearing effect. This occurs after booting when the console output switches to the actual screen resolution, but before X starts. Running X, the screen can be set up to 1650x1050, but the tty console output is still scattered, regardless of the X resolution. fbset also does not change the resolution. I could reproduce this behaviour with a Maverick live CD, but on Karmic everything is fine, still. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image (not installed) ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. AplayDevices: - **** List of PLAYBACK Hardware Devices **** - card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of PLAYBACK Hardware Devices **** + card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 Architecture: i386 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] - Subdevices: 2/2 - Subdevice #0: subdevice #0 - Subdevice #1: subdevice #1 + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] + Subdevices: 2/2 + Subdevice #0: subdevice #0 + Subdevice #1: subdevice #1 CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0x94820000 irq 47' - Mixer name : 'Analog Devices AD1984A' - Components : 'HDA:11d4194a,103c30eb,00100400' - Controls : 18 - Simple ctrls : 11 + Card hw:0 'Intel'/'HDA Intel at 0x94820000 irq 47' + Mixer name : 'Analog Devices AD1984A' + Components : 'HDA:11d4194a,103c30eb,00100400' + Controls : 18 + Simple ctrls : 11 Date: Sat Jun 11 19:25:57 2011 LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1) MachineType: Hewlett-Packard HP EliteBook 2730p ProcEnviron: - LANGUAGE=en_US:en - LANG=en_US.UTF-8 - SHELL=/bin/bash + LANGUAGE=en_US:en + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity RelatedPackageVersions: - linux-restricted-modules-2.6.38-8-generic N/A - linux-backports-modules-2.6.38-8-generic N/A - linux-firmware 1.52 + linux-restricted-modules-2.6.38-8-generic N/A + linux-backports-modules-2.6.38-8-generic N/A + linux-firmware 1.52 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/04/2010 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68POU Ver. F.0E dmi.board.name: 30EB dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 04.22 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68POUVer.F.0E:bd08/04/2010:svnHewlett-Packard:pnHPEliteBook2730p:pvrF.0E:rvnHewlett-Packard:rn30EB:rvrKBCVersion04.22:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP EliteBook 2730p dmi.product.version: F.0E dmi.sys.vendor: Hewlett-Packard
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/796030 Title: intel gma 4500mhd external monitor picture scrambled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/796030/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
