Am 08.09.2014 03:41 schrieb "Michel Dänzer" <michel@xxxxxxxxxxx>:
>
> 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 http://pastebin.com/gS1xHYPc
>
> --
> Earthling Michel Dänzer | http://www.amd.com
> Libre software enthusiast | Mesa and X developer
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