[Bug 538648] Re: [Intel GM45] Irregular sync flashes on 8086:2a42 (Needs i915.powersave quirk)

[Rohit]

same here. neither of the workarounds work for me perfectly. kinda annoying
actually.

On Sat, Jul 3, 2010 at 3:05 PM, Martin Schraner
<schraner at env.ethz.ch>wrote:

> Neither installing Andy Whitcroft's test kernel nor the option
> i915.powersave=0 helped with me (Lenovo Think Pad T400s). To get rid of
> the annoying flickering, I re-installed Karmic Koala. I hope the bug
> will be solved at least for the next distribution.
>
> --
> [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 direct subscriber
> of the bug.
>
> Status in X.org xf86-video-intel: Unknown
> Status in “linux” package in Ubuntu: Triaged
> Status in “xserver-xorg-video-intel” package in Ubuntu: Invalid
>
> Bug description:
> [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]
>
>
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/538648/+subscribe
>

-- 
[Intel GM45] Irregular sync flashes on 8086:2a42 (Needs i915.powersave quirk)
https://bugs.launchpad.net/bugs/538648
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