[Bug 12083] DVI output on Mobility 9000 (M9) (ThinkPad R51) does not work

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=12083


gemkow at ikr.uni-stuttgart.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|DVI output on Mobility 9000 |DVI output on Mobility 9000
                   |(M9) (ThinkPad R51) works no|(M9) (ThinkPad R51) does not
                   |longer                      |work




------- Comment #3 from gemkow at ikr.uni-stuttgart.de  2007-08-27 07:43 PST -------
(In reply to comment #2)
> With mergedfb you have to force the the monitorlayout to use LVDS with
> internal TMDS.
> 
> Option "MonitorLayout" "LVDS, TMDS"
> 
> Your best bet for full functionality is to use the randr-1.2 branch.
> 

Thanks for the answer. In fact I tried the MonitorLayout option and
the randr-1.2 branch before reporting the bug and this does not work.

The solution was/is a patch which showed up in bug #2859, comment #73
(not reading the TMDS-PLL values from the BIOS but using the default values
from the driver). I had this change in the driver which worked before
but thought this is unrelated - sorry about this.

With this change the DVI-output an our T51 works.

This shows the real problem: Our TPs R51 seem to be one more system which
contains invalid BIOS TMDS/PLL entries which the driver should ignore.

In comment #79 of bug #2859 it is proposed to detect invalid values
in these tables and ignore them. But hot to recognize that the entries
are invalid??


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