On Wed, May 18, 2016 at 6:52 PM, Nicolás <nico...@devels.es> 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...). >
Is X properly configured with QXL? xorg-x11-drv-qxl RPM (in Fedora / EL - I assume something similar in Ubuntu) installed, and x.org CONF file properly set up - something like: Section "Device" Identifier "qxl" Driver "qxl" EndSection Section "Screen" Identifier "screen" Device "qxl" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1024x768" EndSubSection EndSection Y. > > 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 >
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