From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.5) Gecko/20041110 Firefox/1.0 Description of problem: I have a Radeon 9200SE card attached to a Samsung SyncMaster 213T via the DVI connector. The screen periodically goes blank for a couple of seconds, after which it displays "Digital" (signifiying the DVI input) -- this is indicative of the input signal having been lost. I have tried to figure out when it happens, and all I have been able to conclusively determine is that I'm always moving the mouse when it happens. It tends to happen in "bursts"; meaning three or more instances of the same problem in very short order. It's reliably reproducible on the time frame of an hour or so. I have tried disabling the hardware cursor, and I have DRI disabled due to bug 123511. It it a very frustrating problem; it makes the machine almost too annoying to use. Version-Release number of selected component (if applicable): xorg-x11-6.8.1-12.FC3.21 How reproducible: Sometimes Steps to Reproduce: See Description Additional info: I will attach xorg.conf, Xorg.0.log, and lspci output to this bug.
I should add that I did *not* see this problem when I was running stock FC2 on this system. Either this is an X server regression, or something else has changed.
Created attachment 108586 [details] xorg.conf
Created attachment 108587 [details] Xorg.0.llog
Created attachment 108588 [details] lspci -vv output
Could be related to bug #143872 perhaps? Please upgrade to xorg-x11 from rawhide, which will be released soon as an update for FC3. It contains numerous radeon driver and other fixes. Please update the report with your rawhide testing results. Thanks in advance.
Setting status to "NEEDINFO", awaiting feedback of rawhide xorg-x11 testing.
Does the problem persist with xorg-x11 6.8.2? We'll be releasing it as an update soon. Another recommendation is to disable renderaccel on Radeon, by putting: Option "NoRenderAccel" into the device section of the xorg.conf Please advise.
Please update the bug report with your results from the testing requested in comment #5 through 7, so we can proceed with this issue. Thanks in advance.
This might very well be a duplicate of bug #143872. Can you review that bug and indicate if it sounds the same as yours? If DDC probe fails for whatever reason, it is possible the wrong resolution gets used, and the panel is scaling it, which generally looks horrible.
I just upgraded to xorg-x11-6.8.2-1.FC3.13.x86_64 this morning and am now experiencing exactly the same behavior. I have a very similar setup. Shuttle SN85G4-V2 motherboard Ati radeon 9200se Samsung SyncMaster 213T LCD Monitor connected to DVI output What's a little odd is that previously I was running xorg-x11-6.8.1-12.FC3.21.x86_64 and this problem was NOT occuring. Yet this is the version that this bug was originally posted for. I see the screen blink out then back, even when there is no appearent activity (no mouse movement etc.). Note that I have also been experiencing the problem noted in bug 123511 (screen blinks while doing GL). So after reading the note on this bug above, I disabled DRI (commented out loading dri module in xorg.conf). After disabling DRI, both problems have improved. I have not yet had an instance of the screen blanking out.
*** This bug has been marked as a duplicate of 143872 ***