Bug 357613

Summary:	sys-kernel/gentoo-sources-2.6.37 with x11-drivers/xf86-video-nouveau causes screen to blink
Product:	Gentoo Linux	Reporter:	Vladimir <v_2e>
Component:	[OLD] Core system	Assignee:	Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	x11
Priority:	High
Version:	unspecified
Hardware:	AMD64
OS:	Linux
URL:	https://bugs.freedesktop.org/show_bug.cgi?id=34430
See Also:	http://bugs.debian.org/613571
Whiteboard:
Package list:		Runtime testing required:	---

Description Vladimir 2011-03-06 10:23:05 UTC

After upgrading from the sys-kernel/gentoo-sources-2.6.35-r5  to  sys-kernel/gentoo-sources-2.6.37-r1  by screen blinks every minute or so.
I use Nouveau driver and I have found the following information in one of the Google groups threads (
http://groups.google.com/group/linux.debian.bugs.dist/browse_thread/thread/e8dc2d1855925bee/dffccca40d8841cf?lnk=gst&q=613571#dffccca40d8841cf ):
        "I have discovered that the culprit is upowerd which queries the 
         following file: 
         /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0/card0-TV-1/status 
         Querying this file by hand makes the screen flicker."

So I tried to access this file on my machine and this does cause the screen blinking.
People also report this problem is present in 2.6.36 kernel also.


Reproducible: Always

Steps to Reproduce:
1. emerge sys-kernel/gentoo-sources-2.6.37-r1
2. start the system with NVidia videocard using the Nouveau driver
3. execute the command:
        cat /sys/devices/pci0000\:00/0000\:00\:01.0/0000\:01\:00.0/drm/card0/card0-TV-1/status

   and see how the screen blinks.

Comment 1 Chí-Thanh Christopher Nguyễn gentoo-dev

2011-03-14 22:39:50 UTC

Does a bug report on https://bugs.freedesktop.org/ exist already?

Comment 2 Vladimir 2011-03-16 20:07:39 UTC

(In reply to comment #1)
> Does a bug report on https://bugs.freedesktop.org/ exist already?
I'm not sure, but the following bugs may be related:
https://bugs.freedesktop.org/show_bug.cgi?id=34430
https://bugs.freedesktop.org/show_bug.cgi?id=34220
https://bugs.freedesktop.org/show_bug.cgi?id=34972

Comment 3 Mike Pagano gentoo-dev

2011-03-17 10:37:32 UTC

Please work with the upstream bug. I will monitor and backport any fixes that present themselves.