Originally Posted by Gareth Jones
You could be using software rendering without hardware acceleration. If Settings->Details->Overview->Graphics mentions LLVMpipe, then you’re using software rendering.
It might be my problem too. I can see llvmpipe (LLVM 3.3, 128 bits) in my setup. How can I fix it?
After digging a little bit more into this I found out I do not have the xorg.conf file and cannot create one due to the "Number of created screens does not match number of detected devices" error.
Finally, I think I know what it is. My system is too old. Is there a way to disable software acceleration?
220.127.116.11. Minimum Hardware for Accelerated Desktops
Fedora 19 supports most display adapters. Modern, feature-rich desktop environments like GNOME3 and KDE Plasma Workspaces use video devices to provide 3D-accelerated desktops. Older graphics hardware may not support acceleration:
Intel prior to GMA9xx
NVIDIA prior to NV30 (GeForce FX5xxx series)
Radeon prior to R300 (Radeon 9500)
18.104.22.168. CPU Accelerated Graphics
Systems with older or no graphics acceleration devices can have accelerated desktop environments using LLVMpipe technology, which uses the CPU to render graphics. LLVMpipe requires a processor with SSE2 extensions. The extensions supported by your processor are listed in the flags: section of /proc/cpuinfo