https://bugs.freedesktop.org/show_bug.cgi?id=54129 Bug #: 54129 Summary: [bisected] Kernel 3.5.0 breaks KMS on Radeon RV250 Classification: Unclassified Product: DRI Version: unspecified Platform: x86 (IA32) OS/Version: Linux (All) Status: NEW Severity: major Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@xxxxxxxxxxxxxxxxxxxxx ReportedBy: mariofutire@xxxxxxxxxxxxxx Created attachment 66187 --> https://bugs.freedesktop.org/attachment.cgi?id=66187 Screenshot of bad rendering I run Fedora 17 and since they have shipped a kernel 3.5.X I have a lot of artefacts when I log in KDE. Kernel 3.4.6 works ok. My hardware in a Thinkpad laptop with a 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] (rev 02) and I load the R200 microcode. Basically, as soon as I log on KDE I have a lot of rectangular areas which are left black. They are 100% reproducible always with the same pattern (at least in the few seconds before I logoff again), and they move around when I click or windows are displayed. If I pass the option radeon.modeset=0 to the kernel (in grub) there are no artefacts, but of course XV support is not there so this is not really an option as video player struggle a lot. I managed to bisect the issue to the following commits: bad ========= 3b7a2b2 drm/radeon: rework fence handling, drop fence list v7 skip ======== bb63556 drm/radeon: convert fence to uint64_t v4 good ======== d6999bc drm/radeon: replace the per ring mutex with a global one "skip" here means that the kernel does not boot: after the linux penguin logo is displayed on the top left of the screen, nothing else happens, even though I am able to reboot pressing Ctrl-Alt-Del. So there are 2 commits that could be responsible. Please, let me know if there is anything I can provide on top of that. -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
