blank external DVI on Thinkpad T40

Gilad Arnold arnold at
Wed Feb 25 12:57:42 PST 2009

Also, let me know if you'd like to see my xorg.conf or log file. Many
thanks for your help so far.


On Wed, Feb 25, 2009 at 12:56:56PM -0800, Gilad Arnold wrote:
> On Wed, Feb 25, 2009 at 03:32:58PM -0500, Alex Deucher wrote:
> > Also, IIRC, the DVI port on the IBM docking station is only supposed
> > to support a max resolution of 1280x1204 or 1600x1200.  It might be a
> > limitation of DVI traces or connector in the docking station.
> I'm not sure. As I said, the DVI port used to work fine at 1900x1200
> prior to Xorg 1.3. Of course, back then the LVDS was disabled in the
> presence of an external DVI.
> > Either of those should work.  You'll have to have another monitor
> > plugged in if you ignore the LVDS or it won't find any attached
> > monitors.
> The ignore option led to the aforementioned error, although I did have
> the external DVI monitor connected. I can try again with VGA-0 connected
> as well but suspect that the result will be the same.  The xrandr --off
> option did shutdown the LVDS, but did not help de-blanking the DVI...
> Has anyone had any positive experience with a similar setting? Perhaps
> it is a driver issue to start with? (fglrx does a better job with
> managing multiple displays?)
> Gilad

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