Rolf Schmidt composed on 2017-02-02 12:21 (UTC+0100):
...
lightdm was installed, to get a graphical login insted of tdm
...
Why lightdm instead of TDM?
...
Graphics: Card: NVIDIA GT218M [NVS 3100M] bus-ID: 01:00.0 chip-ID: 10de:0a6c...
According to https://support.lenovo.com/us/en/documents/pd006109#vid you also
have Intel gfx, which lspci -nnk | grep -A4 VGA missed showing.
That means you need a special (optimus or bumblebee) driver instead of the
generic nouveau, nouveau or intel FOSS Xorg drivers that your Xorg logs show in
use.
Mine with only GeForce on host big31 running Jessie with 4.9 kernel:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GT218 [GeForce 210]
[10de:0a65] (rev a2)
Main difference between our gfxchips is that yours is mobile and connects to bus
differently, but I'd expect same behavior.
Screenshot of 3840x1200 120DPI TDE desktop:
http://fm.no-ip.com/SS/Xorg/2head-3840x1200x120-nvGT218-big31-deb8TDE.jpg
I get the same result with xserver-xorg-video-modesetting installed and with or
without xserver-xorg-video-nouveau installed.
I don't think I can suggest anything more that might be helpful, since I have no
hardware requiring either of those special drivers.
--
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata *** http://fm.no-ip.com/
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