Bug 23368

Summary:

[915GM] Screen flickers in 2.6.31-rc6

Product:

xorg

Reporter:

Sven Arvidsson <sa>

Component:

Driver/intel

Assignee:

Jesse Barnes <jbarnes>

Status:

RESOLVED FIXED

QA Contact:

Xorg Project Team <xorg-team>

Severity:

major

Priority:

high

CC:

bryce, dam+fdo

Version:

7.4 (2008.09)

Keywords:

NEEDINFO

Hardware:

Other

OS:

All

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
dmesg output	none
xorg log	none
Assume higher latency	none

Description Sven Arvidsson 2009-08-17 10:20:02 UTC

Created attachment 28705 [details]
dmesg output

The screen on my Eee is flickering any time large parts of the screen is redrawn, such as when windows are moved around. This worked fine in -rc5.

The behaviour is similar to what I described here, but I have no idea if that's relevant or not:
http://bugs.freedesktop.org/show_bug.cgi?id=21182#c5

System environment:
-- chipset: 910GML 
-- system architecture: 32-bit
-- Linux distribution: Debian unstable
-- Machine or mobo model: Asus Eee PC 701 4G (using latest BIOS from Asus)
-- Display connector: LVDS
-- xf86-video-intel: 926c7e7d30458078f8185d4e0b9b32b40102b3d5
-- mesa: 7.5
-- xserver: 1.6.3
-- drm: f7996165fffe0a835752e8b9bb6b4d81bba5c91d
-- kernel: 2.6.31-rc6

Comment 1 Sven Arvidsson 2009-08-17 10:20:22 UTC

Created attachment 28706 [details]
xorg log

Comment 2 Jesse Barnes 2009-08-18 09:46:11 UTC

Created attachment 28751 [details] [review]
Assume higher latency

Can you give this patch a try?

Comment 3 Sven Arvidsson 2009-08-18 11:55:23 UTC

With the patch, everything is back to normal. Thanks for solving the problem so fast! :)

Comment 4 Jesse Barnes 2009-08-24 15:42:01 UTC

*** Bug 23398 has been marked as a duplicate of this bug. ***

Comment 5 Sven Arvidsson 2009-08-28 07:21:30 UTC

Will the patch make it for 2.6.31?

Comment 6 Jesse Barnes 2009-08-28 10:17:10 UTC

I'll ping Eric and ask him to include it.

Comment 7 Sven Arvidsson 2009-09-06 06:58:32 UTC

This didn't make it for -rc9 did it? 

(If not, I'll ask the debian maintainers to add it.)

Comment 8 Jesse Barnes 2009-09-06 09:50:02 UTC

Yeah, doesn't look like it...

Comment 9 Jesse Barnes 2009-09-11 14:44:35 UTC

Fix in 2.6.31:

commit bcc24fb42585dc9f490cf7789a917358414bdab5
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Mon Aug 31 10:24:31 2009 -0700

    drm/i915: increase default latency constant (v2 w/comment)

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