<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - X freezes periodically"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79041">79041</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>X freezes periodically
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ctuffli@gmail.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=99542" name="attach_99542" title="GPU crash dump">attachment 99542</a> <a href="attachment.cgi?id=99542&action=edit" title="GPU crash dump">[details]</a></span>
GPU crash dump
Running Xubuntu 14.04, the desktop periodically (at least once per week)
freezes, but can be "fixed" by switching to a virtual terminal and rebooting.
The end of dmesg shows:
...
174290.346217] [drm] stuck on render ring
[174290.346226] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[174290.346228] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[174290.346230] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[174290.346233] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[174290.346235] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[174290.349597] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0x929f000 ctx 0) at 0x929f55c
[174296.346616] [drm] stuck on render ring
<last entry repeats>
While the crash doesn't appear to be associated with a specific application, it
seems to happen when resizing windows. lspci lists the device as:
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated
Graphics Controller (rev 12) (prog-if 00 [VGA controller])
Subsystem: Intel Corporation Device 0036
Flags: bus master, fast devsel, latency 0, IRQ 44
Memory at fe000000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at f100 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>