http://bugzilla.novell.com/show_bug.cgi?id=628039 http://bugzilla.novell.com/show_bug.cgi?id=628039#c0 Summary: radeon: display goes blank on modeswitch, video outputs switched off(?) Classification: openSUSE Product: openSUSE 11.3 Version: Final Platform: i686 OS/Version: openSUSE 11.3 Status: NEW Severity: Critical Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: Stromeko@NexGo.DE QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; U; Linux i686; de; rv:1.9.2.8) Gecko/20100723 SUSE/3.6.8-1.2 Firefox/3.6.8 I've installed 11.3 over a 11.1 installation a few days ago. I've switched from fglrx to radeon since I don't care about 3D anyway and happily enough the spurious 4-20 second hangs I had before in KDE4 have gone away. However I now have a sporadic problem that is much more annoying: Whe resolution is changed via KMS (I'm running 1920x1200x32@60 over DVI normally) or after DPMS has switched off the monitor for an extended period of time, apparently the video output doesn't properly re-enable and I'm left with a running system that has a blank screen. Sometimes it seems that there is some signal left (the monitor reports "no signal, going to sleep"), I've had a single instance where the screen would still show the mouse pointer as a "box with random colors" but nothing else and in one instance the VGA output was active rather than the DVI. But mostly I have absolutely no signal that my monitor recognises. The system itself is responsive most of the time, I can even (blindly) shut down KDE and do a reboot. In a few instance the keyboard has become non-functional, even though the mouse appears to have been working still. After a reboot I can see briefly that the video RAM did contain the correct data (I can see the shutdown dialog from KDE with the "reboot" button pressed). Reproducible: Sometimes Steps to Reproduce: 1. Boot w/ KMS on, vesafb mode 1280x1024 (the highest mode my VESA BIOS knows about) 2. Some time into the boot sequence KMS switches from vesafb to radeon and changes resolution to 1920x1200. 3. I can see the resolution change, but about one or two seconds later the display goes blank. 4. I wait for the boot sequence to start kdm and then blindly shut down the system. I'm currently using video=1920x1200x32@60 on the kernel modeline to avoid the vesafb->radeon switch, but that does not help with the KMS resolution changes that may happen after the boot sequence has finished. There are no error messages in the system logs. The hardware is a Radeon 9550/VIVO/128MB/AGPx8 (I'm only using the DVI output normally) and is correctly recognized as RV350 by the radeon driver. Linux 2.6.34-12-pae #1 SMP 2010-06-29 02:39:08 +0200 i686 athlon i386 GNU/Linux There seems to be a bugfix for DPMS related problems in the 2.6.35 release notes, but I haven't found anything related to the other problems I'm experiencing. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.