** Description changed: - [Workaround] + [Workaround 1] + Install Andy Whitcroft's test kernel from http://people.canonical.com/~apw/lp538648-lucid/ (see comment #88). + + [Workaround 2] As workaround add the option i915.powersave=0 to the kernel command line in the grub config (for GRUB 2: edit /etc/default/grub and add i915.powersave=0 to GRUB_CMDLINE_LINUX, then run sudo update-grub; for GRUB 1: edit /boot/grub/menu.lst and add i915.powersave=0 to the end of the line beginning with # kopt=, then run sudo update-grub). [Report] Binary package hint: xserver-xorg When I first installed Lucid on my T500 I believe everything seemd to be fine with the display. Recently though the screen has started giving flashes -- as though there was some form of sync problem for the display. The flashes are of irregular frequency and occurrence. I haven't yet seen any pattern to the behaviour. They are however exceptionally annoying. I believe I am using the Intel chipset graphics device -- I am not actually aware of how to switch to using the alternate graphics hardware, but I am told it is not worth bothering with, so I haven't. I am using the Compiz window manager so I guess the problem could be there rather than with Xorg. There is no xorg.conf file so there is no overide of the default behaviour. I am not sure what programs to run to give useful output for this problem. I have attached the current Xorg log file. --- Architecture: amd64 DistroRelease: Ubuntu 10.04 DkmsStatus: virtualbox-ose, 3.1.4, 2.6.32-17-generic, x86_64: installed virtualbox-ose, 3.1.4, 2.6.32-16-generic, x86_64: installed virtualbox-ose-guest, 3.1.4, 2.6.32-17-generic, x86_64: installed virtualbox-ose-guest, 3.1.4, 2.6.32-16-generic, x86_64: installed InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100224.1) MachineType: LENOVO 20827SG Package: xserver-xorg-video-intel 2:2.9.1-1ubuntu16 PackageArchitecture: amd64 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-17-generic root=UUID=d075e3b9-f26d-4896-9983-4afe962b115a ro quiet splash ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1 Tags: lucid lucid Uname: Linux 2.6.32-17-generic x86_64 UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare dmi.bios.date: 01/09/2009 dmi.bios.vendor: LENOVO dmi.bios.version: 6FET56WW (2.02 ) dmi.board.name: 20827SG dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6FET56WW(2.02):bd01/09/2009:svnLENOVO:pn20827SG:pvrThinkPadT500:rvnLENOVO:rn20827SG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20827SG dmi.product.version: ThinkPad T500 dmi.sys.vendor: LENOVO system: distro: Ubuntu codename: lucid architecture: x86_64 kernel: 2.6.32-17-generic [lspci] 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) Subsystem: Lenovo Device [17aa:2114]
-- [Intel GM45] Irregular sync flashes on 8086:2a42 (Needs i915.powersave quirk) https://bugs.launchpad.net/bugs/538648 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
