Bug 112199 - Occasional Hangs in Various Programs. Sometimes unrecoverable.
Summary: Occasional Hangs in Various Programs. Sometimes unrecoverable.
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: x86-64 (AMD64) Linux (All)
: not set normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
Depends on:
Reported: 2019-11-02 19:02 UTC by John Leuenhagen
Modified: 2019-11-05 12:25 UTC (History)
1 user (show)

See Also:
i915 platform: BDW
i915 features: GPU hang

Crash dump from hang while using Discord. (36.16 KB, text/plain)
2019-11-02 19:02 UTC, John Leuenhagen
no flags Details

Description John Leuenhagen 2019-11-02 19:02:29 UTC
Created attachment 145879 [details]
Crash dump from hang while using Discord.

On my laptop with Intel graphics (i5-5200U), I have had issues with occasional hanging when using various programs. This has been happening for well over a year, but I haven't been able to resolve it. Anyway, I checked journalctl and I was told to file a new bug report, so here I am. Typically the programs that cause a hang are some kind of web browser or web client (e.g. Discord, Slack, and Chromium). Sometimes it's an isolated hang for a few seconds, and other times several will happen in a row, often leading me to close the program. Recently, some freezes have been unrecoverable, requiring a system restart. These have been especially hard to debug, as journalctl provides no useful logging when I check the end of the logs for the previous boot after restarting. My intuition says that this might be an unrelated problem however, as it only seems to happen when I am using my bluetooth headphones. That might just be a coincidence though. Anyways, I have attached the crash dump, so hopefully that will provide more insight than I have already.
Comment 1 Lakshmi 2019-11-05 12:24:35 UTC
rcs0 command stream:
  IDLE?: no
  START: 0x0104f000
  HEAD:  0x00600248 [0x000001f8]
  TAIL:  0x00000300 [0x00000248, 0x00000288]
  CTL:   0x00003001
  MODE:  0x00004000
  HWS:   0xffffe000
  ACTHD: 0x0000fffe ec022934
  IPEIR: 0x00000000
  IPEHR: 0x7b000005
  INSTDONE: 0xffdfbefb

IPEHR: 0x7b000005 shows as Instruction_3DPRIMITIVE (from bspec). Assuming this is a mesa bug. Closing this issue as NOTOURBUG.
Comment 2 Lakshmi 2019-11-05 12:25:13 UTC
Please report this issue here 

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