I reinstalled my system anew because I feared some old cruft might cause this problem. That's not the case, the new installation behaves the same way.
In the kernel log I cannot find anything particularly useful: [drm] radeon default to kernel modesetting DISABLED. [drm] Initialized radeon 1.30.0 20080528 for 0000:01:00.0 on minor 0 -- Black screen with radeon KMS https://bugs.launchpad.net/bugs/410058 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
