Bug 2523

Summary:	mga xinerama xgamma does not change second screen
Product:	xorg	Reporter:	Klaus Dittrich <kladit>
Component:	Driver/mga	Assignee:	Xorg Project Team <xorg-team>
Status:	RESOLVED INVALID	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	high	CC:	benoit, bgrpt
Version:	6.8.2
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Klaus Dittrich 2005-02-11 09:03:40 UTC

With Matrox G550 dual-dvi (the card with one connector and a split cable for
two dvi monitors) xgamma works only on the left screen.
Even when I specifiy -sceen 1 nothing happend.
I have the installed the newest (4.1) HAL driver.

Comment 1 Clemens Schwaighofer 2006-08-10 20:48:31 UTC

I have the same problem with the Matrox G450 card (dual vga out, separate
connectors) and the latest matrox 4.4 HAL driver and x.org 7.0 in Debian/testing.

I can change the Gamma only on screen 0

This also applies if I use the merged-fb mode

Comment 2 Helmut 2007-02-02 03:11:15 UTC

*** Bug 9847 has been marked as a duplicate of this bug. ***

Comment 3 Helmut 2007-02-05 00:17:14 UTC

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=166413

Looks we've no luck here

Comment 4 Daniel Stone 2007-02-27 01:25:22 UTC

Sorry about the phenomenal bug spam, guys.  Adding xorg-team@ to the QA contact so bugs don't get lost in future.

Comment 5 DEMAINE Benoit-Pierre 2010-09-22 05:14:14 UTC

We need more info on this:
- does it still happen with recent Xorg ? aka, any X >= 1.5
- are you using Xinerama or Xrandr ? in case of Xinerama, see bug 30326 . Or, maybe even an other aproach ? If Xrandr, you should use the xrandr command to change gamma, not xgamma.
- wee need your xorg.conf and X log.

This bug heavily depends on your configuration. How heads are adressed.

In most case, please close this bug as needinfo, or cantrepro. I have been using Matrox and multi-head long enough to know that, the old bugs from 2005 are now "deprecated".

Comment 6 Adam Jackson 2018-06-12 19:09:57 UTC

Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.

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