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<span id="result_box" class="" lang="en"><span class="hps">For 2
years or more</span> <span class="hps">I'm trying to</span>
<span class="hps">get</span> <span class="hps">spice</span> <span
class="hps">full</span> <span class="hps">features</span> <span
class="hps">fully working</span> <span class="hps">with</span>
<span class="hps">xen</span> <span class="hps">but I found</span>
<span class="hps">a qxl problem with linux domUs that I'm un</span><span
class="hps">able to</span> <span class="hps">debug.<br>
</span></span><span id="result_box" class="" lang="en"><span
class="hps">With the last</span> <span class="hps">test</span>s
<span class="hps">I was able to</span> <span class="hps">see</span>
<span class="hps">a</span> <span class="hps">backtrace</span>
<span class="hps">in the</span> <span class="hps">xorg</span>
<span class="hps">log</span> <span class="hps atn">(</span><span>though
perhaps not</span> <span class="hps">track</span> <span
class="hps">the direct cause</span><span>)</span> <span
class="hps">and</span> <span class="hps">a</span> <span
class="hps">different behavior</span> <span class="hps">with</span>
<span class="hps">a</span> <span class="hps">patch</span> <span
class="hps">regarding</span> <span class="hps">the
emulation of</span> <span class="hps">some</span> <span
class="hps">cpu</span> <span class="hps">instructions</span></span>.<br>
<br>
In attachment there are lspci output of debian Sid domU and Xorg
log.<br>
I did a minimal installation with xorg and flubox and launched
manually it with startx (.xinit have: systemd --user & exec
startfluxbox)<br>
Same problem with xorg that use 100% cpu and black screen on
spice client also on other tests I did in past with fedora
ubuntu and debian domUs using DE of default install (mainly
gnome).<br>
<br>
After this xen patch domU crash and seems I'm unable to take a
backtrace or useful data about:<br>
<a class="moz-txt-link-freetext" href="http://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=3af450fd2d9403f208d3ac6459716f027b8597ad">http://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=3af450fd2d9403f208d3ac6459716f027b8597ad</a><br>
<br>
My tentative of take a backtrace gave this output:<br>
<blockquote type="cite">gdbsx -a 2 64 9999
<br>
...
<br>
(gdb) target remote localhost:9999
<br>
Remote debugging using localhost:9999
<br>
[Switching to Remote target]
<br>
0x66666666 in ?? ()
<br>
(gdb) c
<br>
Continuing.
<br>
<br>
Program received signal SIGINT, Interrupt.
<br>
0x000000ff in ?? ()
<br>
(gdb) bt full
<br>
#0 0x000000ff in ?? ()
<br>
No symbol table info available.
<br>
Cannot access memory at address 0x6d2966c0
</blockquote>
<br>
<b>Someone can tell me how to debug this problem (xorg "loop"
with qxl driver in use and/or xen domU's crash) for take all
needed informations to solves it please?</b><br>
<br>
Thanks for any reply and sorry for my bad english.<br>
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