Created attachment 105953 [details] my xorg.0.log When I use linux to play a movie or play a game or even watch a youtube movie, after a while there apear artifacts on the screen and soon the system freezes, on the screen there are more artifacts so that entire screen is covered. Seems to me that video card gets overheated. I can not watch a whole movie in one piece, have to restart 2 times, screen saver also causes this problem. Using desktop normaly without any video intense stuff everything is OK. So far I have researched the internet there is a DPM option but it is not yet implemented for my card, right? With this last versions of the driver I there aper to be no more clock options and dinamic power management for me to set in xorg.conf. I use linux Mint 17
FWIW, my 3 rv380 gfxcards are many years old, probably around 8 years. 2 have passive coolers, 1 has a fan. Yours may be new to you, but it isn't new to the world of Linux. If yours has a fan, is the fan working? None of mine seem to be particularly well suited to playing HD video, but the CPU may have something to do with this, better with more cores. I can't recall any trouble with SD video. If yours has no fan, can you place an auxiliary fan to blow on the cooler to eliminate the artifacts and freezing, at least to test, even with a house fan and the case open? Which DE is your Mint 17 running? If Gnome, it may be Gnome's heavy dependence on bling is the problem, not your rv380 card per se or its driver.
I forgot to mention it is a mobile version on IBM ThinkPad Z60m, so I can not do anything with any fan. But on WinXP everything plays fine.
Pre-r6xx hardware does not support dpm, only manual reclocking. See the "KMS Power Management Options" section of the RadeonFeature wiki: http://www.x.org/wiki/RadeonFeature/ for how to manually select lower power states.
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