Bug 102819 - [drm:intel_set_cpu_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A
Summary: [drm:intel_set_cpu_fifo_underrun_reporting] *ERROR* uncleared fifo underrun o...
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: Other All
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: ReadyForDev
Keywords:
Depends on:
Blocks:
 
Reported: 2017-09-17 11:21 UTC by Rion
Modified: 2018-01-05 17:01 UTC (History)
1 user (show)

See Also:
i915 platform: IVB
i915 features: display/Other

Attachments
kernel config (33.68 KB, application/gzip)
2017-09-17 11:21 UTC, Rion 		no flags Details
dmesg (16.81 KB, application/gzip)
2017-09-17 11:22 UTC, Rion 		no flags Details
Xorg.0.log (7.66 KB, application/gzip)
2017-09-17 11:22 UTC, Rion 		no flags Details
dmesg forced intel (17.32 KB, application/gzip)
2017-09-18 04:57 UTC, Rion 		no flags Details
Xorg.0.log forced intel (7.71 KB, application/gzip)
2017-09-18 04:57 UTC, Rion 		no flags Details
kernel config for forced intel tests (33.76 KB, application/gzip)
2017-09-18 05:00 UTC, Rion 		no flags Details
View All

Description Rion 2017-09-17 11:21:03 UTC 
Created attachment 134291 [details]
kernel config

I see next strange messages in dmesg

[   61.403120] [drm:intel_set_cpu_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A
[   61.403127] [drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe A FIFO underrun
[   61.403148] [drm:intel_set_pch_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A
[   61.403151] [drm:intel_pch_fifo_underrun_irq_handler] *ERROR* PCH transcoder A FIFO underrun

Gentoo on Clevo P170EM with hybdrid graphics

$ sudo lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wimbledon XT [Radeon HD 7970M]

Linux dizzynb 4.13.2-gentoo #1 SMP Sun Sep 17 13:47:20 +05 2017 x86_64 Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz GenuineIntel GNU/Linux
x11-base/xorg-server-1.19.3
x11-drivers/xf86-video-ati-7.10.0
media-libs/mesa-17.2.0
Comment 1 Rion 2017-09-17 11:22:39 UTC 
Created attachment 134292 [details]
dmesg
Comment 2 Rion 2017-09-17 11:22:55 UTC 
Created attachment 134293 [details]
Xorg.0.log
Comment 3 Rion 2017-09-18 04:54:54 UTC 
I tried to force intel driver instead of modesetting and the messages are gone.
So I guess it's some bug in modesetting driver.
Comment 4 Rion 2017-09-18 04:57:20 UTC 
Created attachment 134308 [details]
dmesg forced intel
Comment 5 Rion 2017-09-18 04:57:42 UTC 
Created attachment 134309 [details]
Xorg.0.log forced intel
Comment 6 Rion 2017-09-18 05:00:36 UTC 
Created attachment 134310 [details]
kernel config for forced intel tests
Comment 7 Elizabeth 2017-09-19 15:33:16 UTC 
This may be related to 102759.
Comment 8 Rion 2017-09-21 07:59:34 UTC 
I downgraded my kernel to 4.11.12.

Everything seems to work good again.
No strange messages in dmesg and Ctrl+Alt+F1 works again (With 4.12+ it doesn't work)
Comment 9 Rion 2017-11-24 04:42:30 UTC 
No errors with 4.14 + modesetting. I guess it's fixed.
Comment 10 Elizabeth 2017-11-28 20:36:17 UTC 
(In reply to Rion from comment #9)
> No errors with 4.14 + modesetting. I guess it's fixed.
Thanks for the update Rion. Marking as resolve then.

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