[Qemu-devel] Re: Extremely slow graphic updates

[Stefano Stabellini]

Lennart Sorensen wrote:

> On Tue, Jan 20, 2009 at 11:22:30AM +0000, Stefano Stabellini wrote:
>> We are not doing anything that dumb (anything that I am aware of :)
> 
> Could it be that it is trying to use shared video ram even in cases
> where that is a very bad idea?


There are no such cases I am aware of.

 
>> What is the quickest way for me to reproduce this problem?
>> Have you seen this on ppc emulation only?
> 
> Boot qemu-system-ppc with default options.  I use debian lenny (2.6.26
> kernel).  I think it runs 800x600 resolution by default.  


Are you using Xorg in the guest? What is the guest color depth?

 
>> What is the resolution of your host? What X11 extensions are you using?
>> Do you set SDL_VIDEODRIVER anywhere?
> 
> Nope.  My xorg.conf doesn't list any extensions, so whatever the
> defaults are.  I can check.
> 

I assume your host is an i386 machine.
What is the color depth of your Xorg server running on the host?