A possible temporary workaround after discovering the issue persists through a warm boot not starting VMWare Player, which I temporarily suspected - only been testing for about 5 minutes here:
Used "Displays" to set 1280x720 instead of 1920x1080. Display becomes a horrible corrupt mess of offset chunks vaguely suggestive of what might be on the desktop except for a perfectly working hardware cursor. Waited for display to revert; post-reversion to 1920x1080 the seizure- inducing "blipverts" as shown in the images above seem gone and the desktop text is less flickery with "timing cruft" as well (longstanding problem using the analog output with this hardware similar to the bad old days of the Rage XL). Not sure if this implicates KMS / poor setup from KMS, as alluded to in other similar Radeon bugs. dmesg shows nothing, Xorg log shows nothing interesting from the resolution-flip operations: [ 718.155] (II) RADEON(0): Allocate new frame buffer 1280x720 stride 1280 [ 718.155] (II) RADEON(0): VRAM usage limit set to 48193K [ 748.647] (II) RADEON(0): Allocate new frame buffer 1920x1088 stride 1920 [ 748.692] (II) RADEON(0): VRAM usage limit set to 44089K Inability to successfully downgrade resolution probably counts as another bug but is not of personal interest. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181355 Title: R300 (RS480): Intermittent flickering corruption top half of display (VGA, 1080p) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1181355/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
