> > Well, first of all, stop top posting. Gmail does this by default. I'll try not to do it. Secondly, I think that KDE, by > > default, enable desktop effects. It has been a while since I used it, > > but I think you need OpenGL (either hardware or software emulated). > > > > From the errors you sent, it's hard to tell. But it might be you don't > > have enough memory assigned to your VM. Also you can try using virtio > > device instead of QXL and enable OpenGL. Note that this is not the same > > driver as xf86-video-qxl. I've just tried KDE neon. Resolution works with the xrandr command and CPU load is normal. But anyway I can't spent more time on it. I'll stick to Ubuntu as guest. Thanks