Thomas Howard, this bug report is being closed due to your last comment
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/840140/comments/76 regarding you no longer have the hardware.
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Please submit any future bugs you may find.
** Changed in: xserver-xorg-video-ati (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/840140
Title:
Graphical corruption then black screen using an ATI Radeon 6790 card
on boot
Status in X.org XServer - ATI gfx chipset driver:
Fix Released
Status in “xserver-xorg-video-ati” package in Ubuntu:
Invalid
Bug description:
When I try to boot from the Ubuntu 11.10 Beta instalation CD or try to
boot it once installed, The screen briefly displays pink tinted noise,
then goes to a black screen.
I am using an AMD Radeon 6790 Graphics card and I have had generally
similar problems wjhen using previous versions of Ubuntu or other
linux distributions when attempting to use the open source radeon
drivers.
From reading the Feature Matrix on the Xorg website, it seems there should be
support with working KMS and 3d acceleration for this graphics card now:
http://xorg.freedesktop.org/wiki/RadeonFeature
I am not sure where to begin trying to get more information to assist
further in debugging this problem, once it gets to the black screen,
there is nothing I can do other than reboot.
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