linux-kernel - i915 GPU-hang regression in v5.6-rcx

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Date:   Mon, 24 Feb 2020 11:52:32 +0100
From:   Jörg Otte <jrg.otte@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Dave Airlie <airlied@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: i915 GPU-hang regression in v5.6-rcx

In v5.6-rcx I sporadically see a hanging GPU.

[  640.919302] i915 0000:00:02.0: Resetting chip for stopped heartbeat on rcs0
[  641.021808] i915 0000:00:02.0: Xorg[722] context reset due to GPU hang

[ 2229.764709] i915 0000:00:02.0: Resetting chip for stopped heartbeat on rcs0
[ 2229.867534] i915 0000:00:02.0: kwin_x11[1005] context reset due to GPU hang

To recover Xorg must be killed and restarted or reboot is required.
I've never seen this before v5.6-rcx.

Best way to reproduce seem to be "heavily scrolling with the mouse wheel"
in graphic applications. I also saw this once while video streaming in
a browser.


System:  Host: fichte Kernel: 5.6.0-rc1 x86_64 bits: 64 Console: tty 3
Distro: Ubuntu 18.04.3 LTS
Machine: Device: Notebook System: FUJITSU product: LIFEBOOK A544
serial: <filter>
         Mobo: FUJITSU model: FJNBB35 serial: <filter>
         BIOS: FUJITSU // Phoenix v: Version 1.17 rv 1.17 date: 05/09/2014
CPU:     Dual core Intel Core i5-4200M (-MT-MCP-) cache: 3072 KB
         clock speeds: max: 3100 MHz 1: 1127 MHz 2: 964 MHz 3: 1034
MHz 4: 984 MHz
Graphics:Card: Intel 4th Gen Core Processor Integrated Graphics Controller
         Display Server: X.Org 1.19.6 drivers: modesetting (unloaded:
fbdev,vesa) Resolution: 1366x768@...00hz
         OpenGL: renderer: Mesa DRI Intel Haswell Mobile version: 4.5
Mesa 19.2.8


Thanks, Jörg