Since fglrx that supports ubuntu 9.04 doesn't anymore support X1200 I had to start using radeonhd but it has some serious flickering problems. Whenever there is enough movement in the screen the screen flickers, white lines, random garbage, and various displacements going on quite often. Best example is a website which triggers the most sever problems with flash animations: http://www.foreca.fi/Suomi/tasmasaa/Helsinki Depending on what flash animations is running there the screen is either flickering a little bit a quite a lot. This site reproduces the problem every time. (The site shows local weather in Helsinki area) It can also be reproduced by for example giving dmesg;dmesg in gnome-terminal and then constantly doing Page Up and Page Down (with xset r rate 200 to get away the keyboard delay) and the screen will flicker. With this I can also reproduce the problem every time. Attached xorg.conf and X logs. Whatever else data you need to get let me know.
Created attachment 25099 [details] X logs
Created attachment 25100 [details] xorg.conf
Could you please test Option "UseAtomBIOS" "true" in the device section? If that one works, please test Option "AtomBIOS" "pll=on" instead, and *please* tell us the outcome.
No difference with either option. Attached X logs for both cases.
Created attachment 25105 [details] Option "UseAtomBIOS" "true"
Created attachment 25106 [details] Option "AtomBIOS" "pll=on"
As Luc indicated on IRC, this is more likely a watermark issue. We will hopefully get docs about that in the near future (fingers crossed)...
I just installed the driver from Git but with same problems. However, if you want to get out some debugs or anything else just let me know.
Could you check if the problems exists under heavy CPU load? Some users report that when the CPU freq is scaled below e.g. 1GHz, they're seeing screen flickering.
Hmm... Some improvement after setting the highest CPU frequency: # cpufreq-selector -f 190000 It still happens with both the website and the gnome-terminal but less, quite a lot less actually. Too bad though that the CPU fan just became audible :)
Does this issue occur with the preferred ati driver (xf86-vide-ati)? If so, please move this to the Driver/Radeon component. Development of radeonhd has pretty much halted and development focus is on the ati driver. Please see http://www.x.org/wiki/radeonhd If the issue does not exist in the ati driver (or if there is no response to this message), this bug will be closed as WONTFIX unless someone contributes a patch.
Closing due to lack of response. Please reopen and move to the Driver/Radeon component if this issue persists with xf86-video-ati
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