Bug#488283: software rendering

[Brice Goglin <Brice.Goglin@ens-lyon.org>]

Sten Heinze wrote:
> Found http://bugs.freedesktop.org/show_bug.cgi?id=16151 today and removed the 
> following line which I added in order to use external monitors:
> 	Virtual         2048 2048
>
> Afterwards the error message was not displayed anymore, and also 'glxinfo | 
> grep rendering' returns now 'direct rendering: Yes'. To be able to expand 
> (cloning works with the default maximum of 1024x1024) my desktop I tried 
> several values, and while 2048x1900 did not work I found 
> 	Virtual         2048 1820
> is working and gives me the possibility to use a [1400|1680]x1050 display 
> together with my internal 1024x768 laptop screen.
>
> I have no idea, why 2048x2048 does not work, although this value can be found 
> as the maximum value direct rendering works with in most places, but the 
> slightly lower resolution for the virtual screen works for me. But don't 
> hesitate to ask, I'm happy to help or test.
>   

Can you send the X log before and after changing the Virtual line?

Brice