On St, 2016-05-18 at 16:52 +0100, Nicolás wrote:
Hi,
Probably not an oVirt issue, but maybe someone can help. I've deployed a pretty basic VM (ubuntu 14.04 server, 4GB RAM, 4 CPUs, 15GB storage). Each time I install an additional desktop environment (Gnome, KDE, whatever...), CPU usage rises to 100% all time to the extreme that interacting with the machine becomes impossible (maybe a mouse movement is propagated 3 minutes later or so...).
To debug this, I installed LXDE, which is a lightweight desktop environment based on Xorg. I could see there is an Xorg process consuming one of the CPUs and the machine stops responding as far as the desktop environment goes. I have not changed anything in the configuration file.
I could also see this only happens when QXL is chosen as the display driver. When CIRRUS is chosen, everything works smoothly and CPU is ~100% idle. The downside is that we want to use SPICE and CIRRUS won't allow it.
Why does this happen? Is this an OS-side driver issue? Any hint how can it be fixed?
Thanks.
Nicolás _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Try disabling KMS (by blacklisting qxl module). IIRC it was new by 14.04 release time while UMS was already mature. David