Russel Winder, 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 linux <replace-with-bug-number> Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily kernel folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-v3.12-rc2 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Triaged => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/538648 Title: 8086:2a42 [Intel GM45] Irregular sync flashes (Needs i915.powersave quirk) Status in X.org xf86-video-intel: Fix Released Status in “linux” package in Ubuntu: Incomplete Status in “xserver-xorg-video-intel” package in Ubuntu: Invalid Bug description: [Status] Fixed in maverick Not fixed in lucid (bug still seen on 2010-09-22 with kernel 2.6.32-25) [Workaround] 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). [Alternative workaround for experts] Compile your kernel with Andy Whitcroft's patch from http://people.canonical.com/~apw/lp538648-lucid/ (see comment #92). [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] To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/538648/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
