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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - system freeze "fifo: gr engine fault on channel 6" NVIDIA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96876">96876</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>system freeze "fifo: gr engine fault on channel 6" NVIDIA
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/nouveau
</td>
</tr>
<tr>
<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dashesy@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=124976" name="attach_124976" title="acpidump">attachment 124976</a> <a href="attachment.cgi?id=124976&action=edit" title="acpidump">[details]</a></span>
acpidump
I saw some similarity with <a class="bz_bug_link
bz_status_NEW "
title="NEW - [NVE6] complete system freeze, PGRAPH engine fault on channel 2, SCHED_ERROR [ CTXSW_TIMEOUT ]"
href="show_bug.cgi?id=93629">bug #93629</a>, but this is not related to any
SCHED_ERROR. Also it is very often, usually chrome triggering it.
I had problem with this GC, turning off the monitors on startup, but that
problem is now fixed in the latest kernel.
$ journalctl --no-pager -b -2 -p err
-- Logs begin at Thu 2016-05-05 05:39:48 PDT, end at Sat 2016-07-09 16:10:13
PDT. --
Jul 04 02:15:01 dashesy.wavelet kernel: nouveau 0000:01:00.0: priv: HUB0:
086014 ffffffff (1f70820c)
Jul 04 09:15:32 dashesy.wavelet mcelog[877]: Family 6 Model 5e CPU: only
decoding architectural errors
Jul 04 09:15:33 dashesy.wavelet bluetoothd[873]: Failed to obtain handles for
"Service Changed" characteristic
Jul 04 09:16:01 dashesy.wavelet spice-vdagent[1546]: Cannot access vdagent
virtio channel /dev/virtio-ports/com.redhat.spice.0
Jul 04 09:17:36 dashesy.wavelet spice-vdagent[2064]: Cannot access vdagent
virtio channel /dev/virtio-ports/com.redhat.spice.0
Jul 04 12:24:41 dashesy.wavelet kernel: nouveau 0000:01:00.0: Invalid PCI ROM
header signature: expecting 0xaa55, got 0xffff
Jul 09 09:59:48 dashesy.wavelet kernel: nouveau 0000:01:00.0: fifo: read fault
at 0000260000 engine 00 [GR] client 01 [GPC0/T1_0] reason 02 [PTE] on channel 6
[007fb61000 systemd-logind[859]]
Jul 09 09:59:48 dashesy.wavelet kernel: nouveau 0000:01:00.0: fifo: gr engine
fault on channel 6, recovering...
Jul 09 09:59:48 dashesy.wavelet kernel: nouveau 0000:01:00.0: gr: TRAP ch 6
[007fb61000 systemd-logind[859]]
Jul 09 09:59:48 dashesy.wavelet kernel: nouveau 0000:01:00.0: gr:
GPC0/TPC0/TEX: 80000049
Jul 09 09:59:48 dashesy.wavelet kernel: nouveau 0000:01:00.0: gr:
GPC0/TPC1/TEX: 80000049
$ lspci -v
01:00.0 VGA compatible controller: NVIDIA Corporation GK208 [GeForce GT 730]
(rev a1) (prog-if 00 [VGA controller])
Subsystem: Dell Device 1083
Flags: bus master, fast devsel, latency 0, IRQ 126
Memory at de000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=128M]
Memory at d8000000 (64-bit, prefetchable) [size=32M]
I/O ports at e000 [size=128]
Expansion ROM at df000000 [disabled] [size=512K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Legacy Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting <?>
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024
<?>
Kernel driver in use: nouveau
Kernel modules: nouveau
$ uname -a
Linux dashesy.wavelet 4.5.7-202.fc23.x86_64 #1 SMP Tue Jun 28 18:22:51 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
This is a complete hang, and seems to happen quite enough, I will gladly run
any kernel/driver combination to sort this out.</pre>
</div>
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