Hmm, no prob, I can do the poking around to find the dupe bugs, if you
can give me some information.
Can you please attach your /etc/X11/xorg.conf file? I can use this to
find what driver you're running. Also, please include the output from
the following command: discover --disable=serial,parallel,usb,ide,scsi
--format="%V %M\t%S\t%D\n" video
Also, can you check your screensaver settings and see if you have any 3D
screensavers ("OpenGL") active? If I recall correctly, in Dapper the
screensaver by default cycled randomly through different screensavers,
which could cause crashes very similar to what you experienced, on some
graphics hardware. Changing the screensaver settings solves that
problem. In Feisty we set things to not do this by default, so this
particular issue won't happen in the future.
--
Screen goes blank and computer becomes unresponsive.
https://bugs.launchpad.net/bugs/119688
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Bugs, which is the bug contact for Ubuntu.
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