Hello Rolf,

the log-file path is:
/var/log/tdm.log

i have a running/working multi-head (three monitors) setup with TDE and a 
Nvidia-Card, but i'm using the proprietary driver from http://nvidia.com/ and 
not nouveau. I only use nouveau for older cards.

Are you using nvidia-settings, or krandr? I used nvidia-settings.

Kind Regards,

Richard

On Wednesday 01 February 2017 14:48:51 Rolf Schmidt wrote:
> Hi,
>
> I will setup a Lenovo T410i laptop which has a nvidia grafic card. The
> laptop should use additioaly second monitor when in the docking station
> and of course expand the gui across both screens.
>
> The (original) driver can't handle this - allways assumes both motiors
> are connected. So I installed the nouvea driver and get trouble with tdm.
>
> Tdm starts and I see the clock for a short time and then tdm terminates
> and a text only terminal login is shown. When login and call "startx", I
> get a working trinity session and the crash report manager is shown.
>
> So my question is "where can I look for error messages of tdm" or has
> some one else an idea or a solution for the problem?
>
> Many thanks in advance
> Rolf