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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Recent change makes Xorg hangs"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94685">94685</a>
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<th>Summary</th>
<td>Recent change makes Xorg hangs
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
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<th>Version</th>
<td>git
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>Driver/intel
</td>
</tr>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
<tr>
<th>Reporter</th>
<td>alexandre.nunes@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>I've traced this too 02f535e8f3659f1147c6f2e698bd5d8730dec19b - after reversal
it was working again.
To reproduce, hover the mouse over a recent kde5 menu and Xorg hangs in an
infinite loop.
Connecting via ssh I was able to ask gdb for this live backtrace:
#0 0x00007f3b82cde577 in ioctl () at ../sysdeps/unix/syscall-template.S:84
#1 0x00007f3b83faf558 in drmIoctl ()
from /usr/lib/x86_64-linux-gnu/libdrm.so.2
#2 0x00007f3b7e6e32da in sna_present_queue ()
from /usr/lib/xorg/modules/drivers/intel_drv.so
#3 0x00007f3b7e6e3448 in vblank_complete ()
from /usr/lib/xorg/modules/drivers/intel_drv.so
#4 0x00007f3b7e6e395e in sna_present_vblank_handler ()
from /usr/lib/xorg/modules/drivers/intel_drv.so
#5 0x00007f3b7e65109c in sna_mode_wakeup ()
from /usr/lib/xorg/modules/drivers/intel_drv.so
#6 0x00007f3b7e654c10 in sna_wakeup_handler ()
from /usr/lib/xorg/modules/drivers/intel_drv.so
#7 0x000055999747577a in WakeupHandler ()
#8 0x00005599975cbbaf in WaitForSomething ()
#9 0x00005599974709ce in ?? ()
#10 0x0000559997474bb3 in ?? ()
#11 0x00007f3b82c1d610 in __libc_start_main (main=0x55999745ef10, argc=8,
argv=0x7ffca32f6918, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffca32f6908) at libc-start.c:291
#12 0x000055999745ef49 in _start ()
lspci reports 00:02.0 VGA compatible controller: Intel Corporation 2nd
Generation Core Processor Family Integrated Graphics Controller (rev 09)
It's a Intel(R) Core(TM) i5-2410M system and the Xorg log reports:
[ 1972.493] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000
[ 1972.493] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100
[ 1972.493] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200, 6200,
P6300
[ 1972.493] (II) intel(0): Using Kernel Mode Setting driver: i915, version
1.6.0 20151010
[ 1972.493] (II) intel(0): SNA compiled from 2.99.917-581-g1b82b7b
[ 1972.493] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics
3000
[ 1972.493] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3, sse4.1, sse4.2,
avx; using a maximum of 2 threads
[ 1972.493] (II) intel(0): Creating default Display subsection in Screen
section</pre>
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