On 08/02/12 11:15, dave(a)staffslug.org.uk wrote:
Sadly it's a laptop, so can't do much with the graphics.
I shall have a look on the AMD site to see if there is an update.
It would help to get the relevant log output from /var/log/kernel.log
(or /var/log/messages, whichever gets results!) rather than guessing,
but if it is GPU related...
Are you sure that you're using the AMD binary driver, as downloaded from
and/or installed via the 'fglrx' package?
If you haven't done that (hint: check the 'Restricted Drivers Manager
tool when you do get to login!) then you should probably consider trying
a newer kernel, as problems on boot with kernel mode-setting are quite
often fixed with each release: even every single RC, there are a *tonne*
of fixes made to the radeon DRM code by various persons.
Have a go with this:
You need to download the .deb files then double-click to install (in
order -- headers for all archs, headers for your chosen arch and then
the image for your chosen arch) alternatively a quick 'sudo dpkg -i
linux*.deb from the right path works for me too. :)
These work a treat and have been my successful way of testing new
kernels with Ubuntu for a long, long time.
teh@teh-desktop:~$ cat /etc/lsb-release
teh@teh-desktop:~$ uname -r
(Yes, 3.3-rc2 -- it appears I need to try -rc3 as well now!)
... And if you are using the AMD driver, then I would highly suggest
cleanly uninstalling it and having a go with the FOSS driver. 3D support
is there even for my HD6850 and it's more than enough to drive
gnome-shell, et al.