linux kernel : 3.2.0 libdrm-radeon1 : 2.4.29 xserver-xorg-video-radeon : 6.14.99 motherboard : ASUS M2A-VM HDMI (*no* VIA chipset) Graphics card : msi R5450 with 1 Gb onboard RAM memory size : 4 Gb Description : when booting, the message "Ring buffer test failed" appears in dmesg log. A a consequence, the software rasterizer is chosen, and after X is started, there is no 3D acceleration. Workaround : when I add "mem=3G" to the kernel parameters, the message disappears, and I get 3D acceleration. Of course, 1 Gb of RAM memory is lost for the applications. (log files will get attached to this bug report)
It's very similar to the problem described in http://lkml.indiana.edu/hypermail/linux/kernel/1105.2/03496.html Nevertheless, it's not exactly the same hardware conditions, and the radeon driver patch that did solve that problem does not work for me.
Created attachment 55245 [details] cat /proc/cmdline
Created attachment 55246 [details] cat /proc/meminfo
Created attachment 55247 [details] dmesg
Created attachment 55248 [details] glxinfo
Created attachment 55249 [details] lspci -v
Created attachment 55250 [details] uname -a
Ouch, I just realized there was a "nomodeset" option left from an old test. I'll see if that changes anything to the dmesg etc. Sorry.
Created attachment 55257 [details] correct version of dmesg
Created attachment 55258 [details] correct version of cat /proc/cmdline
Rebooted with correct kernel parameters and attached corresponding versions of dmesg and cat /proc/cmdline. The other files do not change significantly. Sorry for the mistake.
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