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

[Alex Deucher]

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:
> > >
> > >
> > > --- 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?
> 

the code to properly support systems with LVDS and TMDS has yet to be
written so for now it's one or the other.  We'll get there eventually.

Alex

> 
>  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
>