[oi-dev] Fwd: [Graphics/DRM - Bug #7716] drm hang with ring dumps in messages

[Gordon Ross]

I've heard this happens on the Lenovo W520 (and maybe others)
Can anyone try this for me?  Thanks.


---------- Forwarded message ----------
From: illumos project <devnull at illumos.org>
Date: Fri, Feb 10, 2017 at 2:37 PM
Subject: [Graphics/DRM - Bug #7716] drm hang with ring dumps in messages
To:


Issue #7716 has been updated by Gordon Ross.


Can anyone with one of the systems affected by this hang try setting
  i915_try_reset = true
(you can use mdb -kw to set it)
and report back with the result?  Thanks!

----------------------------------------
Bug #7716: drm hang with ring dumps in messages
https://www.illumos.org/issues/7716#change-18715

* Author: Marcel Telka
* Status: New
* Priority: Normal
* Assignee:
* Category:
* Target version:
* Difficulty: Medium
* Tags: needs-triage
----------------------------------------
I face the drm hang with the flood of ring dumps in the
/var/adm/messages (attached).  After the hang the screen shows the
distorted image and Xorg core dumps.  The only way I found how to get
out of this is reboot.

Here is the beginning of the messages log:

<pre>
Jan  2 11:41:32 telcontar drm: [ID 300979 kern.warning] WARNING:
[drm:ring_dump:881] Dump render ring ring
Jan  2 11:41:32 telcontar drm: [ID 834546 kern.warning] WARNING:
[drm:ring_dump:882] HEAD 0x14d04 TAIL 0x14e28
Jan  2 11:41:32 telcontar drm: [ID 628728 kern.warning] WARNING:
[drm:ring_dump:883] seq 3742159
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a34]: 0x12044
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a38]: 0x3919c9
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a3c]: 0x0
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a40]: 0x11000001
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a44]: 0x22040
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a48]: 0x3919c9
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a4c]: 0x0
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a50]: 0x10800001
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a54]: 0x80
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a58]: 0x3919c9
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a5c]: 0x1000000
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a60]: 0xb160001
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a64]: 0x3919c9
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a68]: 0x0
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a6c]: 0x0
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a70]: 0x7a000003
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a74]: 0x100002
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a78]: 0x261084
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a7c]: 0x0
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a80]: 0x0
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a84]: 0x0
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a88]: 0x7a000003
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a8c]: 0x4000
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a90]: 0x261084
Jan  2 11:41:32 telcontar drm: [ID 994420 kern.warning] WARNING:
[drm:ring_dump:890] render ring[0x14a94]: 0x0

...
</pre>

This hang happens usually in less than 24 hours after the boot, but
sometimes the machine survives for several days.  The machine is
Lenovo T520 with this graphics controller (scanpci):

<pre>
pci bus 0x0000 cardnum 0x02 function 0x00: vendor 0x8086 device 0x0126
 Intel Corporation 2nd Generation Core Processor Family Integrated
Graphics Controller
</pre>

IIRC, this started to happen once I updated from older drm binaries
(made by Martin Bochnig) to the gfx-drm work available in recent OI
Hipster.

---Files--------------------------------
messages (695 KB)


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