[Spice-devel] running gtk apps on kdm/kde gives very poor performance using qxl

[Yonit Halperin]

Hi,
On 02/04/2013 06:27 AM, Rob Verduijn wrote:
> Hello,
>
> I'm not sure if this is the right mailinglist for my question so
> please forgive me and direct me to the proper one if its not.
>
> I've installed the latest spice releases on opensuse and everything is
> working fine. (usbredir, qxl etc)
> I use it for a portal running kdm end kde via ssh all working fine.
>
> I got only two problems.
>
> one minor, spice-vdagent is not started automatically after reboot by
> kdm, I have to do this manually via 'systemctl start
> spice-vdagentd.service' after which the desktop launches the userspace
> bit when logging in.
>
> and one very annoying.
> When I start a gtk based application the system grinds to a halt,
> where the menu was snappy and responsive before it becomes not usable
> after launching a gtk based app, firefox for example or virt-manager.
>
> I can either wait for it to draw the application window which can take
> minutes and then close it or kill it via a shell session. After which
> the session becomes fast and responsive again.
>
> I've dug through logs everywhere (syslog, xsession-error, Xorg.0.log)
> but don't see any errors that are not there when not launching the gtk
> based apps.
>
> I got 3 errors flooding my  logs which are also there when not using gtk apps.
> out of surfaces
> qxl_surface_create: Zero width or height
> qxl_surface_create: Bad bpp: 1 (1)
>
> Does anybody have any idea where to start looking to improve
> performance of the gtk apps.
>
Have you tried disabling off screen surfaces? (set "EnableSurfaces" to 
false in the qxl section in xorg.conf)
> Cheers
> Rob Verduijn
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