Problems with DVI+LCD on IBM ThinkPad T42p (ATI Technologies Inc M10 NT [FireGL Mobility T2])

[Martin Knoblauch]

--- Alex Deucher <alexdeucher at gmail.com> wrote:

> On 7/26/05, Martin Knoblauch <spamtrap at knobisoft.de> wrote:
> > 
> > 
> > --- Michel Dänzer <michel at daenzer.net> wrote:
> > 
> > > On Tue, 2005-07-26 at 09:46 -0400, Alex Deucher wrote:
> > > > On 7/26/05, Martin Knoblauch <spamtrap at knobisoft.de> wrote:
> > > > >
> > > > > --- Alex Deucher <alexdeucher at gmail.com> wrote:
> > > > >
> > > > > > On 7/26/05, Martin Knoblauch <spamtrap at knobisoft.de> wrote:
> > > > > > >
> > > > > > > Section "Device"
> > > > > > >         Identifier      "RADEON"
> > > > > > >         Driver          "radeon"
> > > > > > >         Option  "BusType"       "AGP"
> > > > > > > #       Option  "MonitorLayout" "TDMS,AUTO"
> > > > > > >         Option  "MonitorLayout" "TMDS,LVDS"
> > > > > > > EndSection
> > > > > > >
> > > > > > >  If I use the commented out MonitorLayout, the notebook
> LCD
> > > comes
> > > > > > up
> > > > > > > clean, but the DVI display stays dark.
> > >
> > > 'TDMS' is not a valid value for Option "MonitorLayout", so the
> driver
> > > probably does autodetection, and as Alex explained, it can only
> use
> > > either LVDS or TMDS at this point.
> > >
> > 
> >  Oops. I have to try the correct spelling. Thanks for pointing it
> out.

 Really embarassing mistake .... :-( Works as expected when spelled
correctly.

  [snip]

> 
> The LVDS controller is not being configured correctly since you are
> forcing the monitortype  on crtc1 to TMDS which is used for DVI.
> you need:
> Option  "MonitorLayout" "TMDS, AUTO"
> when you are using the DVI port, and:
> Option  "MonitorLayout" "LVDS, AUTO"
> when you are using the laptop screen.
> 

 OK, now that I have sorted out my spelling and removed the bogus
DesktopSetup option it looks like this:

LVDS,AUTO : works for laptop alone (docked and undocked)
TMDS,AUTO : works for DVI + Laptop (if docked, both show the same)
            also works for laptop alone (undocked). 
            No grey-ramp anymore

 Of course, the greatest would be to have AUTO,AUTO work in all
situations :-) I am not to deep into this topic. Is it a principal
problem, or a bug?


 Again, sorry for the confusion created by my spelling mistakes.

Cheers
Martin

------------------------------------------------------
Martin Knoblauch
email: k n o b i AT knobisoft DOT de
www:   http://www.knobisoft.de