|Summary:||[945gm] lvds panel blinking from time to time|
|Product:||DRI||Reporter:||Julien Cristau <jcristau>|
|Component:||DRM/Intel||Assignee:||Jesse Barnes <jbarnes>|
|Status:||CLOSED DUPLICATE||QA Contact:|
|Version:||XOrg git||Keywords:||patch, regression|
|i915 platform:||i915 features:|
Description Julien Cristau 2009-12-01 01:44:46 UTC
Created attachment 31618 [details] kernel log As mentioned on irc, after upgrading from 2.6.31 to 2.6.32-rc8, my panel started blinking for a fraction of a second from time to time (on the first boot it seemed to be pretty regular, every 20s or so, now it seems more random). This is with xf86-video-intel 2.9.1, xserver 1.7.2 rc2, libdrm 2.4.14. kernel log with drm.debug=0x6 attached, doesn't seem to have much info though.
Comment 1 Julien Cristau 2009-12-01 10:17:53 UTC
Looks like the relevant messages are still DRM_DEBUG in 2.6.32-rc8, so I uploaded a debug-enabled kernel log to http://people.freedesktop.org/~jcristau/25371/kern.log-debug (it's too big for bugzilla). Jesse mentioned lowering srwm and plane[ab]_wm by a few entries, I haven't tried that yet. I can do that tomorrow (UTC+1) if necessary. Possibly related is that after some time the screen seems to get stuck with a solid color. This happened twice, right now it's purple. Apps (and X) still run fine, apparently, but I wasn't able to get anything back on the screen (only managed to get a black screen with xset dpms force on/off).
Comment 2 Julien Cristau 2010-01-19 02:25:54 UTC
fwiw i915.powersave=0 seems to work around this.
Comment 3 Jesse Barnes 2010-02-05 15:14:25 UTC
Does this still happen with 2.6.33-rc? If so, does David John's patch fix things? http://patchwork.kernel.org/patch/75423/
Comment 4 Julien Cristau 2010-02-07 04:09:25 UTC
> --- Comment #3 from Jesse Barnes <firstname.lastname@example.org> 2010-02-05 15:14:25 PST --- > Does this still happen with 2.6.33-rc? If so, does David John's patch fix > things? http://patchwork.kernel.org/patch/75423/ > Testing 2.6.33-rc7 now. I guess I'll know by tomorrow whether this is fixed.
Comment 5 Julien Cristau 2010-02-07 04:48:41 UTC
On Sun, Feb 7, 2010 at 13:09:01 +0100, Julien Cristau wrote: > > --- Comment #3 from Jesse Barnes <email@example.com> 2010-02-05 15:14:25 PST --- > > Does this still happen with 2.6.33-rc? If so, does David John's patch fix > > things? http://patchwork.kernel.org/patch/75423/ > > > Testing 2.6.33-rc7 now. I guess I'll know by tomorrow whether this is > fixed. at least the flickering is still there with rc7. testing with your 'drm/i915: handle FBC and self-refresh better' patch now.
Comment 6 Julien Cristau 2010-02-08 06:42:22 UTC
(In reply to comment #5) > testing with your 'drm/i915: handle FBC and self-refresh better' patch now. > that seems to improve things. no noticeable blinking, as far as i can tell, and the panel was still there when i got back to the office today. so when that patch goes mainline this can be considered fixed. thanks!
Comment 7 Jesse Barnes 2010-02-08 17:21:23 UTC
Thanks Julien, marking as a dupe. *** This bug has been marked as a duplicate of bug 24314 ***
Comment 8 Jari Tahvanainen 2016-12-13 08:43:41 UTC
Closing as duplicate of closed+fixed.