Bug 6885

Summary: radeon driver does not recognize DVI monitor in docking station
Product: xorg Reporter: Eric L. <ewl+freedesktop>
Component: Driver/RadeonAssignee: Xorg Project Team <xorg-team>
Status: RESOLVED DUPLICATE QA Contact:
Severity: normal    
Priority: high CC: alexdeucher
Version: 6.9.0   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
The original xorg.conf (without MonitorLayout)
none
The xorg.conf with MonitorLayout set to TMDS
none
Working config without Layout and Laptop being standalone
none
Working config with TMDS Layout and Laptop being docked
none
Non-working config without Layout but Laptop being docked none

Description Eric L. 2006-05-10 17:06:22 UTC
Hello,

I have an nc6000 HP laptop with Radeon card, as well as a docking
station with DVI port, with a flat screen attached to it.

Before upgrading to xorg from xfree86 (i.e. Debian Sarge to Etch), I was able to
have one configuration and the xserver would
do the right thing:
- laptop standalone: 1024x768 on the internal display.
- laptop in docking station: 1280x1024 on external screen.
(I'm *not* trying to have something fancy like dual screen!)

Now, I need to have two configurations: the old one (xorg.conf_NoLayout) when
undocked, and a new one with MonitorLayout set to TMDS (xorg.conf_TMDSLayout)
when docked. It of course makes me the laugh of all my (Windows) colleagues.

And if I use the wrong configuration file, I get the following behavior:
- laptop standalone: internal display shows completely garbled picture,
  looks like wrong sync parameters; I suspect trying to represent
  1280x1024 on a display with 1024x768.
- laptop docked: the external screen doesn't show anything. I suspect
  it's running on the internal screen.
In both cases, the xserver doesn't notice anything strange and runs
happily.

I would really like to be able to run with only one configuration, without need
to switch anything manually.

Thanks, Eric
Comment 1 Eric L. 2006-05-10 17:07:29 UTC
Created attachment 5593 [details]
The original xorg.conf (without MonitorLayout)
Comment 2 Eric L. 2006-05-10 17:07:53 UTC
Created attachment 5594 [details]
The xorg.conf with MonitorLayout set to TMDS
Comment 3 Eric L. 2006-05-10 17:08:32 UTC
Created attachment 5595 [details]
Working config without Layout and Laptop being standalone
Comment 4 Eric L. 2006-05-10 17:09:02 UTC
Created attachment 5596 [details]
Working config with TMDS Layout and Laptop being docked
Comment 5 Eric L. 2006-05-10 17:09:40 UTC
Created attachment 5597 [details]
Non-working config without Layout but Laptop being docked
Comment 6 Benjamin Herrenschmidt 2006-05-10 18:15:46 UTC
I'd say it smells a lot like the known issues of laptops & primary TMDS. One
thing you can try to make your windows friends a bit more silent until those
issues are solved is the kind of hacks (hooked to a hotkey) that is described on 

http://ozlabs.org/~jk/docs/mergefb/
Comment 7 Alex Deucher 2006-05-13 07:26:26 UTC

*** This bug has been marked as a duplicate of 3621 ***

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.