El 2016-05-19 07:36, Yaniv Kaul escribió:
On Wed, May 18, 2016 at 6:52 PM, Nicolás <[email protected]> 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 [2] 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.
Indeed, the package was installed and everything configured as should. I
tried removing the qxl driver package from the OS and now everything
goes smooth as silk... Strange, as supposedly this driver should
optimize the graphics part.
Thanks all for the help!
Regards.
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
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