I also had the blank screens problem described by Robertev in #7 above,
after upgrading from Ubuntu 10.10 to 11.04. I may have found a work-
around for it;
Work-Around;
Go to Preferences/Power Management/On AC Power
Setting "Put computer to sleep when inactive"
Change to "Never."
Go to Preferences/Screensaver
Select a screensaver (vs default, which is 'blank')
Uncheck "Lock screen when screensaver is active"
Since making these changes, I have not had the white screen problem.
Non-programmer comments;
I found that blank white windows still contained clickable objects
(which I could not see, but that I could activate by hovering the mouse
in areas where clickable links should be. A comment box would sometimes
pop up on the white screen. Problem is thus likely to be a bug in
rewriting the content of the window...
The 'white screen' with loss of all function happened when I left my
computer idle for 5 minutes or longer. It seems that Ubuntu locked
itself and was probably waiting for me to re-enter my password.
However, I could not see the login screen.
Disabling the sleep function and leaving Ubuntu unlocked when the
screensaver is active seems to have solved these problems. Glad to hear
that this condition has been fixed in Ubuntu 11.10 -- In a few weeks, I
may even get the courage to upgrade further ;-)
--Trent T
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https://bugs.launchpad.net/bugs/763680
Title:
Dash appears under full screen apps
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