since this problem seems to be recurring throughout distros and versions, I looked it up in most boards and of course [...] <- spare rambling about Google skills here. This did not solve it so far. Therefore:
Lenovo X200, Xubuntu 16.04 with no extras or tweaks installed, lightdm,
Eizo FlexScan S2401W external display over VGA, attached to Ultrabase
On the same system I ran Xubuntu 14.04 before and everything worked perfectly.
Working system, using Ultrabase & ext. display but:
- Suspending system (method does not produce different outcome as implied in other threads, i.e. it does not make a difference whether I use some menu or button or the wall to suspend my notebook - ok wall does probably)
- On Login screen cursor is visible but screen does not appear in native resolution
- After login pointer is missing, mouse is working though (since I can see my movements, only the cursor icon is gone)
I have tried
sudo modprobe -r psmouse just to see if it changes anything, but does not. This problem does seem to be a graphics issue to me. It disappears after switching between monitors in the Display applet 2 times.
When I select Laptop only (s. left, image), I immediately see the cursor on my laptop screen. Switching back to only Eizo Nano[...] (s. right, image) obviously refreshes the output for this device and the cursor reappears.
During the whole thing, the native resolution of my display (Eizo) is maintained. There is no issue with that after login anymore. However, the resolution does not seem to be recognized immediately by the system on startup or on wakeup, since the login screen is always stretched on the monitor.
What can cause this issue? (which application/driver?)
I am not looking for:
a different display manager / desktop environment / some bloated tool
I'm looking forward to any (terminal) input, weird ideas or experiments!
Thanks in advance,