<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 18, 2016 at 6:52 PM, Nicolás <span dir="ltr"><<a href="mailto:nicolas@devels.es" target="_blank">nicolas@devels.es</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
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...).<br></blockquote><div><br></div><div>Is X properly configured with QXL?</div><div>xorg-x11-drv-qxl RPM (in Fedora / EL - I assume something similar in Ubuntu) installed, and <a href="http://x.org">x.org</a> CONF file properly set up - something like:<br></div><div><pre class="" id="comment_text_0" style="white-space:pre-wrap;word-wrap:break-word;width:50em;color:rgb(0,0,0)">Section "Device"
Identifier "qxl"
Driver "qxl"
EndSection
Section "Screen"
Identifier "screen"
Device "qxl"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1024x768"
EndSubSection
EndSection</pre></div><div><br></div><div>Y.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
<br>
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.<br>
<br>
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.<br>
<br>
Why does this happen? Is this an OS-side driver issue? Any hint how can it be fixed?<br>
<br>
Thanks.<span class=""><font color="#888888"><br>
<br>
Nicolás<br>
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