Bug 91243 - [bdw iommu?] GPU Hang on 4.1.1
Summary: [bdw iommu?] GPU Hang on 4.1.1
Status: CLOSED WORKSFORME
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-07-06 15:13 UTC by Edgardo Gho
Modified: 2017-07-24 22:46 UTC (History)
1 user (show)

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

Attachments
Error log (140.41 KB, text/plain)
2015-07-06 15:13 UTC, Edgardo Gho 		no flags Details
dmesg (67.18 KB, text/plain)
2015-07-06 15:14 UTC, Edgardo Gho 		no flags Details
Kernel config file (122.48 KB, text/plain)
2015-07-06 15:15 UTC, Edgardo Gho 		no flags Details
View All

Description Edgardo Gho 2015-07-06 15:13:55 UTC 
Created attachment 116974 [details]
Error log

I compiled Kernel 4.1.1 for a Dell Inspiron 3543.
Ubuntu 15.04 (with kernel 3.19.0-15) seems to work OK with it.
My compiled kernel has this GPU hang.
Comment 1 Edgardo Gho 2015-07-06 15:14:34 UTC 
Created attachment 116975 [details]
dmesg
Comment 2 Edgardo Gho 2015-07-06 15:15:08 UTC 
Created attachment 116976 [details]
Kernel config file
Comment 3 Chris Wilson 2015-07-07 12:17:21 UTC 
Suspect here is iommu. Could you please try rebooting with intel_iommu=igfx_off on your kernel command line.
Comment 4 Edgardo Gho 2015-07-08 17:44:56 UTC 
Yes,
Using intel_iommu=igfx_off seems to fix the problem.

I also had to update to a newer X (I was using 1.14). Using 1.17 I have a weird problem with xf86-video-intel. Videos (like camera input) or VLC diplay with artifacts. Does not happen if I use modeset for Xorg (instead of intel).

Thanks for the info on intel_iommu=igfx_off.

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