I have a very similar problem:
My system is not direct rendering due to the wrong opengl vendor ("Mesa" instead of "ATI"), but I can't change it!
I've tried sys$ opengl-update ati, but i get a command not found error.
I'm using the fglrx driver.
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I have a very similar problem:
My system is not direct rendering due to the wrong opengl vendor ("Mesa" instead of "ATI"), but I can't change it!
I've tried sys$ opengl-update ati, but i get a command not found error.
I'm using the fglrx driver.
instead of using opengl-update.....try using eselect opengl set ati..... because opengl-update is deprecated in favour of the latter.....
So just do the following...
1)emerge eselect-opengl
2)eselect opengl set ati
3)source /etc/profile
I found this howto to help me with my Dell Inspiron ATI Mobility X1400 to work.
HOWTO ATI Drivers - Gentoo Linux Wiki