610 – Using nouveau - the screen flickers to black every 30 secs

Bug 610 - Using nouveau - the screen flickers to black every 30 secs

Summary: Using nouveau - the screen flickers to black every 30 secs

Status:	RESOLVED FIXED

Alias:	None

Product:	Mageia
Classification:	Unclassified
Component:	RPM Packages (show other bugs)
Version:	Cauldron
Hardware:	x86_64 Linux

Priority:	Normal Severity: normal
Target Milestone:	---
Assignee:	Mageia Bug Squad
QA Contact:

URL:
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Depends on:
Blocks:

Reported:	2011-04-01 12:24 CEST by Barry Jackson
Modified:	2011-05-01 19:25 CEST (History)
CC List:	2 users (show)

See Also:
Source RPM:	lib64drm_nouveau1-2.4.24-1.mga1
CVE:
Status comment:

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Description Barry Jackson 2011-04-01 12:24:33 CEST

Description of problem:
As subject. 
This message appears simultaneously with each flicker when a TV is connected to SVHS output.

[root@localhost /]# tailf var/log/kernel/info.log
Apr  1 10:55:45 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 10:56:15 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 10:56:45 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 10:57:15 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 10:57:45 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 10:58:15 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 10:58:45 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 10:59:15 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 10:59:45 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B
Apr  1 11:00:15 localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on output B

The messages stop when the TV is disconnected, but the flicker still happens at the same rate.



Version-Release number of selected component (if applicable):
Video card is FX5600u 

How reproducible:
Always

Steps to Reproduce:
1.
2.
3.


Reproducible: 

Steps to Reproduce:

Comment 1 Barry Jackson 2011-04-02 01:11:49 CEST

I have found the same bug in ArchLinux here :-

https://bugs.archlinux.org/task/22967

and in Ubuntu here:-

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/727979

Neither of which seem to have a definitive solution, although it seems not to be restricted to nouveau or nvidia.

I have tried the earlier 2.6.37 kernel and kernel-linus but these make no difference.

Comment 2 Barry Jackson 2011-05-01 10:59:19 CEST

A user in Arch Linux bug report has found that reverting mesa to 7.10.0 has resolved the issue.
Since there has been no triage activity here, and after looking at the changelog for mesa I have added tv to cc list,

Nouveau is still unusable with nvidia FX5600u.

CC: (none) => thierry.vignaud

Barry Jackson 2011-05-01 17:06:09 CEST

CC: (none) => anssi.hannula

Comment 3 Barry Jackson 2011-05-01 19:25:43 CEST

Testing this again just now this seems to be fixed :-)
The message:-
"localhost kernel: [drm] nouveau 0000:01:00.0: Load detected on
output B"
...now only appears once and the flicker has stopped, so a very recent update fixed this.
There is also a comment in the ArchLinux bug a few minutes ago that reports it being fixed with recent updates, so closing as fixed,

Status: NEW => RESOLVED
Resolution: (none) => FIXED

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