radeon + laptop/external monitor (through docking station) problem

[Alex Deucher]

On Tue, Jun 17, 2008 at 2:58 AM, kewlemer <kewlemer at gmail.com> wrote:
>> >  > My set up is basically a laptop connected to an external monitor
>>  >  > through a docking station (Fedora 9 + AMD64).
>>  >  >
>>  >  > Laptop has a Radeon Mobility 7500 card (screen resolution 1280x800)
>>  >  > and the external monitor is Samsung SyncMaster 225BW with 1680x1050
>>  >  > resolution.
>>  >  >
>>  >  > The problem is that when I keep the laptop docked and access it
>>  >  > through the external monitor, I get a display like this -
>>  >  > http://picasaweb.google.com/kewlemer/XorgRadeonLaptopDockingStationExtMonitorProblem/photo#5212182196419140690
>>  >
>>  >
>>  > Since there are two screens of dis-similar size in clone mode, gnome
>>  >  is picking the screen on crtc 0 as the default which is internal
>>  >  panel.
>>  >
>>
>> Thanks very much for the note. Is there any other way around this
>>  apart from disabling LVDS?   Option "IgnoreLidStatus" "False" doesn't
>>  seem to work on my hardware - actually this option disappears from
>>  xorg.conf, each time I restart X.
> Quick update after trying again- Option "IgnoreLidStatus" "False"
> works like a charm.Thanks a ton!  I'm not sure why it wasn't
> persistent fist time though though I had surely saved xorg.conf.
>
> One other question- though the screen looks fine mostly, if I look at
> it closely, its a bit grainy. Do you think I can change something in
> my xorg to make this fine grainy screen go away ?

What do you mean by grainy?  Can you take a picture of it?  Are you
running the display at it's native mode?

Alex