Bug 94329 - [SKL][drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A
Summary: [SKL][drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A
Status: CLOSED WORKSFORME
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-02-29 10:34 UTC by Joonas Lahtinen
Modified: 2017-02-23 12:35 UTC (History)
1 user (show)

See Also:
i915 platform: SKL
i915 features:

Attachments
dmesg (49.09 KB, text/plain)
2016-02-29 10:34 UTC, Joonas Lahtinen 		no flags Details
Picture of screen output (2.84 MB, image/jpeg)
2016-02-29 10:44 UTC, Joonas Lahtinen 		no flags Details
Ubuntu 15.10 kernel config (180.55 KB, text/plain)
2016-03-01 11:38 UTC, Joonas Lahtinen 		no flags Details
Working, CI derived, kernel config (98.47 KB, text/plain)
2016-03-01 11:39 UTC, Joonas Lahtinen 		no flags Details
dmesg for drm-intel-nightly with ubuntu config (129.22 KB, text/plain)
2016-03-02 09:50 UTC, Joonas Lahtinen 		no flags Details
View All

Description Joonas Lahtinen 2016-02-29 10:34:49 UTC 
Created attachment 122024 [details]
dmesg

Getting this on SKL / Ubuntu 15.10
Comment 1 Joonas Lahtinen 2016-02-29 10:44:36 UTC 
Created attachment 122025 [details]
Picture of screen output

Screen is filled with colored stripes.
Comment 2 Joonas Lahtinen 2016-02-29 13:22:38 UTC 
When I use the kernel config from CI system (LOCALVERSION with gfxbench in it), I do not seem to have a problem, but the Ubuntu defconfig leads to this error.
Comment 3 Chris Wilson 2016-02-29 13:42:38 UTC 
Compare fbcon/fbdev setup. First guess would be the BIOS scanout at 0 being overwritten without being disabled. But that should only be temporary.
Comment 4 Nobody 2016-02-29 20:04:22 UTC 
i915 platform = SKL
Comment 5 Joonas Lahtinen 2016-03-01 11:35:59 UTC 
The last two lines of the dmesg repeat indefinitely and the boot does not progress forward.
Comment 6 Joonas Lahtinen 2016-03-01 11:38:07 UTC 
Created attachment 122056 [details]
Ubuntu 15.10 kernel config

The Ubuntu config file in question.
Comment 7 Joonas Lahtinen 2016-03-01 11:39:25 UTC 
Created attachment 122057 [details]
Working, CI derived, kernel config

The kernel config that is derived from the CI config, and is working
Comment 8 Chris Wilson 2016-03-01 12:06:41 UTC 
What happens with -nightly + Ubuntu defconfig + make olddefconfig ?
Comment 9 Joonas Lahtinen 2016-03-02 09:50:52 UTC 
Created attachment 122076 [details]
dmesg for drm-intel-nightly with ubuntu config

The screen stays black, but boot progresses and I am able to login from serial port to get the dmesg.
Comment 10 Jani Nikula 2016-09-20 12:44:47 UTC 
Still an issue?
Comment 11 Joonas Lahtinen 2016-09-21 05:39:29 UTC 
The machine is now booting Fedora 24, so would have to test when I get back home.
Comment 12 Ricardo 2017-02-22 16:15:35 UTC 
Hi Joonas, this has been months with no response, are you now using Fedora 25? is this still and issue? 

If the problem is gone please resolve the bug

If the problem is still occurs add updated logs and change the bug to reopen

(if no response is received in 30 days the bug will be closed)
Comment 13 Joonas Lahtinen 2017-02-23 11:22:59 UTC 
Have not hit this with Fedora, will reopen if I hit again.

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