Am 08.09.2014 03:41 schrieb "Michel Dänzer" <<a href="mailto:michel@daenzer.net">michel@daenzer.net</a>>: > > On 07.09.2014 01:01, Christoph Brill wrote: >> >> >> I'm currently trying to get a HD 4670 aka RV730 XT to work against X.org >> 1.16, xf86-video-ati 7.4.0 on a Linux 3.16.1. >> >> Can anyone tell me: Should this card be able to handle an average Gnome >> desktop? > > > Of course. > > > >> The problem was: 3D rendering did not work at all. >> >> Starting gdm lead to hanging Xorg. Calling glxgears on a twm session >> just rendered a black window, which stayed even if the process was >> killed by CTRL+C. I managed to get glxgears do do its job by setting >> "vblank_mode=0". >> >> I guessed my card does not like to play along with vsync at all. So I >> went ahead to disable vsyncing (tearing is still better than no display >> at all). Setting it globally in /etc/drirc seems to get glxgears running. >> >> Testing Xonotic on twm showed, that the card was now able to handle 3D. >> But: gdm still was extremely sluggish and eventually froze. Starting >> gnome-shell directly from startx gets me to the desktop, but any action >> freezes the process. >> >> Is there still hope for this card or should I get rid of it? > > > It sounds like there's a problem with interrupt processing on your system. Please provide the dmesg output. You might try disabling/enabling MSI to see if that works around the problem. Thank you so much for this hint! Booting using radeon.msi=0 finally brings the system into a usable state. The dmesg of a default boot (i.e. radeon.msi=-1) is available at <a href="http://pastebin.com/gS1xHYPc">http://pastebin.com/gS1xHYPc</a> > > -- > Earthling Michel Dänzer | <a href="http://www.amd.com">http://www.amd.com</a> > Libre software enthusiast | Mesa and X developer