Radeon Driver Default Display Resolution
hamish at travellingkiwi.com
Mon Mar 31 08:07:44 PDT 2008
On Sunday 30 March 2008 14:38:47 you wrote:
> On Tue, Mar 25, 2008 at 8:42 AM, Hamish <hamish at travellingkiwi.com> wrote:
> > On Monday 24 March 2008 14:12:33 Alex Deucher wrote:
> > > On Mon, Mar 24, 2008 at 8:54 AM, Greg Treantos <gtreanto at gmail.com>
> > > > Thanks Alex adding the modelines worked. I tried Beso's suggestion
> > > > first without success. I have 2 follow up questions,
> > > >
> > > > 1) What changed in 7.3 that caused this issue?
> > >
> > > The radeon driver got xrandr 1.2 support. Previous versions of the
> > > driver assumed one monitor per driver instance while with xrandr you
> > > may have several monitors. With xrandr it is much more important to
> > > get mode information about each monitor since you may have two or more
> > > monitors connected with vastly different capabilities. The previous
> > > version of the driver more or less always assumed a monitor was
> > > connected and forced whatever mode you specified. You can still do
> > > this, but as you see, the configuration has changed a bit. This page
> > > should give you a good overview:
> > > http://www.intellinuxgraphics.org/dualhead.html
> > Sorry to appropriate the thread, but I'm also running gentoo, and having
> > a VERY similar problem with my setup (Dual monitors, X300 graphics, xorg
> > ati/radeon drivers, 1024x768 VGA-0 LCD on left, 1680x1050 DVI-0 LCD on
> > right).
> > In my case the Xorg log file shows the modes being probed for the two
> > monitors... I've also been through the intelligraphics page and tried to
> > setup for static config... BUt mine still comes up with 1024x768 on both
> > monitors and requires xrandr to set 1680x1050 on the large monitor...
> The "PreferredMode" option did not properly work with xserver 1.3 By
> default xrandr tries to pick the closest mode possible supported by
> each monitor rather than the preferred modes.
Thanks Alex. I'll try 1.4 & see how that goes.
> > Admittedly the Screen section confuses me a bit... Why do I specify the
> > total virtual screensize of both monitors in the Screen section but the
> > screen section only references one of the monitor sections? Do I have
> > that wrong? (Although it seems the same as what
> > www.intellinuxgraphics.org says).
> The monitor in the screen section is irrelevant if you specify per
> output monitors. The screen defines the total desktop size in which
> one or more monitors can be configured.
Ah. Ta. The only docs I can really find are for 7.0 or 6.8... There doesn't
seem to be an up-to-date man page for radeon (xf86-video-ati 6.8.0) that I
can find... (The man page on my Gentoo still mentions mergedFB etc).
On the same vein... I find my X600 to be really really slow.. Painfully slow.
Could that be due to too a large desktop (2704x1050)? Or am I doing something
wrong? Is an X600 just a slow card? I thought it should be good enought for
compiz even... But only if you're prepared for several seconds wait whenever
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