radeontool can be used to assist in debugging issues where the screen blanks like this. After installing it, you run it like this:
radeontool regmatch '*' > regdump_good.txt radeontool regmatch '*' > regdump_broke.txt Run it two times. Once when you have a good, working screen (for any driver including -vesa), and once in the broken case (either from the tty console or logged into the sick box remotely). ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Confirmed => Incomplete -- [RS480] black screen after a few user switches https://bugs.launchpad.net/bugs/546578 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp