I have Asus EEE docked with an Acer AL2216W. I have faced two types of
problems. Firstly, the screen has become black. One blackness is when I
change freguency of Acer from 60Hz to 65Hz. Other type of blackness did
not appear with Acer's message "Input not supported". It occured once
with the resolution 1400*1050(4:3) and 60Hz. However, I was unable to
replicate it. Secondly, the Acer become almost black lacking the
navigation bar in configuring the settings. Many problems appear with
the resolution 1600*1200 (4:3). Sometimes, the screen is totally black
or partially black. The screen can even become splitted with this
resolution: there were two black lines on the sides of Acer.
You can replicate these errors in this way:
1.) Set your docked screen to 1600*1200 (4:3). (Fine)
2,) Change this screen to 1600*1024. (Black or brownish)
3.) Change to 1280*960 (Fine)
4.) Change back to 1600*1024 (4:3). (Brownish or partially black. Black lines
may occur. During partially blackness, navigation bar disappears.)
Intrestingly, I could not replicate the error every time when I switched
the resolution from lower to 1600*1024. Perhaps, the error occurs if the
screens are above one another or too far from one another. I changed
resolution in "System> Preferences> Screen resolution". In all of these
cases, Asus EEE's screen has no problem. Its resolution was constant
1024*600 (16:9) during debugging.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Fix Released => Incomplete
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[82G33/G31] Changing screen resolution results in a black screen
https://bugs.launchpad.net/bugs/258584
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