Bug 92315 - [SKL] Hard system hang after recovered GPU hang
Summary: [SKL] Hard system hang after recovered GPU hang
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: DRI git
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: Mika Kuoppala
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-10-06 12:01 UTC by Tomi Sarvela
Modified: 2017-07-24 22:44 UTC (History)
1 user (show)

See Also:
i915 platform: SKL
i915 features:

Attachments
GPU kern warning before actual system hand (2.38 KB, text/plain)
2015-10-06 12:01 UTC, Tomi Sarvela 		no flags Details
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Description Tomi Sarvela 2015-10-06 12:01:16 UTC 
Created attachment 118711 [details]
GPU kern warning before actual system hand

Intel i5-6600K / Z170 system with latest git drm-linux, mesa and xorg.

Some graphics operations can hang system if there has been GPU hang before. Attached is an example of recovered GPU hang, but the hard hang is fast enough not to leave trace even in serial port.

Mika Kuoppala knows about this issue.
Comment 1 Jani Nikula 2015-10-12 14:23:52 UTC 
Tomi, does http://patchwork.freedesktop.org/patch/61633 fix the issue?
Comment 2 Tomi Sarvela 2015-10-13 09:41:55 UTC 
Managed to reproduce the hang with newest drm-intel-nightly.

Didn't manage to reproduce the hang with newest drm-intel-nightly + patch-61633
Comment 3 Mika Kuoppala 2015-10-30 14:18:57 UTC 
commit 9c4cbf8212e8d8be4bc6e16cc2c21af2bbaab2c1
Author: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Date:   Mon Oct 12 13:20:59 2015 +0300

    drm/i915: Move skl/bxt gt specific workarounds to ring init

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