Bug#166413: marked as done (xserver-xfree86: [mga] cannot set secondary head's gamma on MGA G400 AGP rev 130)
Your message dated Mon, 28 Oct 2002 21:27:06 -0500
with message-id <20021029022706.GR17459@deadbeast.net>
and subject line Bug#166413: mga driver doesn't set gamma on second screen
has caused the attached Bug report to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what I am
talking about this indicates a serious mail system misconfiguration
somewhere. Please contact me immediately.)
Debian bug tracking system administrator
(administrator, Debian Bugs database)
Received: (at submit) by bugs.debian.org; 26 Oct 2002 01:10:27 +0000
>From email@example.com Fri Oct 25 20:10:27 2002
Received: from maguro.kavi.com [18.104.22.168]
by master.debian.org with smtp (Exim 3.12 1 (Debian))
id 185FT8-0002Wu-00; Fri, 25 Oct 2002 20:10:26 -0500
Received: (qmail 18232 invoked from network); 26 Oct 2002 01:10:23 -0000
Received: from wintermute.kavi.com (HELO debian) (22.214.171.124)
by maguro.kavi.com with SMTP; 26 Oct 2002 01:10:23 -0000
Received: (nullmailer pid 20044 invoked by uid 1009);
Sat, 26 Oct 2002 01:10:23 -0000
Date: Fri, 25 Oct 2002 18:10:23 -0700
Subject: mga driver doesn't set gamma on second screen
Content-Type: text/plain; charset=us-ascii
X-Spam-Status: No, hits=-4.9 required=5.0
I added a:
to my XF86Config-4 file and upon restart it was obvious that my primary
monitor had it's gamma set to 1.8, but the secondary one was still set
to 1.0 even though the X log and xgamma claimed it was set at 1.8
Setting any gamma with xgamma on the second screen has no effect. This
is on a matrox G450 dualhead with 2 identical ViewSonic P810 21" monitors.
Received: (at 166413-done) by bugs.debian.org; 29 Oct 2002 02:27:08 +0000
>From firstname.lastname@example.org Mon Oct 28 20:27:07 2002
Received: from pcp942041pcs.cstltn01.in.comcast.net (apocalypse.deadbeast.net) [126.96.36.199]
by master.debian.org with esmtp (Exim 3.12 1 (Debian))
id 186M5y-0004ya-00; Mon, 28 Oct 2002 20:27:06 -0600
Received: by apocalypse.deadbeast.net (Postfix, from userid 1000)
id 20BC442FF; Mon, 28 Oct 2002 21:27:06 -0500 (EST)
Date: Mon, 28 Oct 2002 21:27:06 -0500
From: Branden Robinson <email@example.com>
Cc: Jeffrey Baker <firstname.lastname@example.org>, Marc Wilson <email@example.com>,
Michel D?nzer <firstname.lastname@example.org>
Subject: Re: Bug#166413: mga driver doesn't set gamma on second screen
References: <20021026011023.GA20011@debian> <20021028002551.GX11697@deadbeast.net> <20021028030715.GD5255@moonkingdom.net> <20021028041437.GL11697@deadbeast.net> <20021028165513.GA9328@moonkingdom.net> <1035830438.1217.111.camel@tibook> <20021028195335.GN17459@deadbeast.net> <20021028202921.GB944@debian>
Content-Type: multipart/signed; micalg=pgp-sha1;
X-Spam-Status: No, hits=-15.9 required=5.0
Content-Type: text/plain; charset=iso-8859-1
On Mon, Oct 28, 2002 at 12:29:21PM -0800, email@example.com wrote:
> On Mon, Oct 28, 2002 at 02:53:35PM -0500, firstname.lastname@example.org wrote:
> Hopefully this message will clear the air.
Thanks for following up.
> > Brett Carter says:
> > "After a quick reboot to windows, looks like the results are the same
> > there - you can't set the gamma on the second head."
> To clarify: Both in windows 98SE and X setting the gamma only sets it
> on the primary display. It looks to me like the hardware is crippled.
> I'll send a message to matrox tech support and see if they indeed can
> confirm this.
> Yes, I :cannot: set the gamma on the secondary head either in windows or
> X. I even flashed my card to the latest bios and driver under windows
> just to make sure. Go ahead and close this report as "not a bug".
> > Brett has a Matrox MGA G400 AGP rev 130. That is the only model of card
> > that matters for this report.
> Umm, actually I've got a matrox G450 - their similar, but slightly
> different. Looks like linux's pci database needs to be updated, and
> lspci on my box returns:
> 01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (re=
No, all Matrox G450 cards show up as G400 cards. Michel D=E4nzer also
addressed this point. Also, I'll save someone the trouble of making
themselves look like an idiot, and invite them to interpret "82" as a
> But I know for a fact I've got a g450 (at least that's what the box
> says, and what windows reports).
The only way to tell a G400 from a G450 is with the PCI device revision
> So to sum things up:
> 1. On a matrox G450, it looks like you can't set gamma on the secondary
> head due to a hardware limitation.
> 2. This bug can be closed as "not a bug"
> 3. It looks like there still might be an issue with the g400, which to
> my knowledge isn't a dual head card.
Okay. Anyone who actually has a software problem is welcome to file a
G. Branden Robinson |
Debian GNU/Linux | De minimis non curat lex.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)
-----END PGP SIGNATURE-----