On Saturday 02 May 2009 16:23:48 Stroller wrote: > On 2 May 2009, at 09:39, Andrew Gaydenko wrote: > >> ... > >> Looks like an overheating GPU to me. > >> > >> Do you have accelerated graphics on for those panels? > >> I'll bet if you turn it off the problem will disappear. > > > > Say, bottom panel hasn't something special: std menu, lancelot, > > tasks, tray > > and clock. Can overheating be such selectable? - I mean only KDE4 > > panels- > > related problem takes place (say, my sone plays few games without any > > problems, as well as, say, OOo/Qt/KDE and so on emerging ). And I > > didn't > > overclocked something. But have added few additional silent coolers > > inside a > > case :-) > > Can overheating be so selective? I can't say for sure, but I can't see > it having so much work to do when displaying the wallpaper as if those > panels fade or slide. I presume they can be auto-hidden one way or the > other when not in use, and that effects would be enabled by default if > you have GPU acceleration available. > > Speckles are somewhat characteristic, and most any videogamer will > recognise them - once you've had a graphics card or a Playstation > (type) console die on you, they are very recognisable. > > The emerging won't have any effect on speckles, only GPU-related > activity. It depends on the particular games that your son plays > whether I'd say they're relevant. I'm no expert on Linux graphics (I > don't use it on the desktop myself), but I'd guess TuxRacer probably > does use the GPU whereas Frozen Bubble does not. > > If you're able to turn the GPU's acceleration features off in X11 (or > the kernel?) and just treat it as a framebuffer device, then please > prove me wrong! > > Stroller.
OK, as Stroller has suggested, I have cleaned heatsink, replaced heat- conducting paste and so on. Now it would be nice to have something for quick GPU load testing (instead of long-long KDE session). Can anybody suggest an appropriate sw or, may be, some game with "hard and heavy" (wrt GPU load) demo?
