Rolf Schmidt composed on 2017-02-01 14:48 (UTC+0100):

> 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.

Trouble from the nouveau driver is common with certain NVidia gfxchips.

> 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?

For us to help with any detail we need to know which operating system version 
and hardware you have. These would help:

lspci -nnk | grep -A4 VGA (only tells about your video hardware)
hwinfo --gfxcard (more detailed video hardware info)
hwinfo --monitor (detailed display info)
inxi -c0 -v6 | head -n20 (fairly comprehensive)
~/.xsession-errors (tde log)
/var/log/Xorg.0.log (log of X server operation, also Xorg.1.log if it exists)
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