Ubuntu 11.10 Server console video blanking every 7 seconds
Installed Ubuntu 11.10 server (AMD64) on a Dell Poweredge 2850 server. Install went fine, but after boot-up the console video (native console resolution - no GUI) goes blanks for about 2 seconds every 7 seconds, repeatedly. The monitor doesn't fall asleep, the monitor video blacks out, then reappears.
I would suspect the hardware, except that the same system ran for hours on the bios/RAID configuration screens and Ubuntu install without this problem.
I usually ssh in remotely, but it would be nice to have a working console.
Is this a known bug? Is there a patch or workaround?