NetBSD Problem Report #55133

From www@netbsd.org  Fri Apr  3 05:20:00 2020
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Date: Fri,  3 Apr 2020 05:19:59 +0000 (UTC)
From: lamduychuong@gmail.com
Reply-To: lamduychuong@gmail.com
To: gnats-bugs@NetBSD.org
Subject: Kernel Error
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>Number:         55133
>Category:       kern
>Synopsis:       i915 has Kernel Error, no graphics
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Apr 03 05:25:00 +0000 2020
>Last-Modified:  Sat Apr 11 12:27:22 +0000 2020
>Originator:     Chuong
>Release:        9.0
>Organization:
n/a
>Environment:
amd64
>Description:
Intel graphic does not work on NetBSD 9.0. Here is the dmesg output:

$ dmesg | grep intel
[     5.206974] intelfb0 at i915drmkms0
[     5.206974] intelfb0: framebuffer at 0xffffc8013c547000, size 1024x768, depth 32, stride 4096
[     5.246998] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_fifo_underrun.c:230)cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A
[     5.246998] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_fifo_underrun.c:381)intel_pch_fifo_underrun_irq_handler] *ERROR* PCH transcoder A FIFO underrun
[     5.457121] wsdisplay0 at intelfb0 kbdmux 1: console (default, vt100 emulation), using wskbd0
[     5.207756] intelfb0 at i915drmkms0
[     5.207756] intelfb0: framebuffer at 0xffffd2813c547000, size 1024x768, depth 32, stride 4096
[     5.247783] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_fifo_underrun.c:230)cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A
[     5.247783] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_fifo_underrun.c:381)intel_pch_fifo_underrun_irq_handler] *ERROR* PCH transcoder A FIFO underrun
[     5.457924] wsdisplay0 at intelfb0 kbdmux 1: console (default, vt100 emulation), using wskbd0
[   268.405648] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_sprite.c:132)intel_pipe_update_start] *ERROR* Potential atomic update failure on pipe A: -35
[   624.646427] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_sprite.c:132)intel_pipe_update_start] *ERROR* Potential atomic update failure on pipe A: -35
[     4.236260] intelfb0 at i915drmkms0
[     4.236260] intelfb0: framebuffer at 0xffff96813c4fe000, size 1024x768, depth 32, stride 4096
[     4.276286] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_fifo_underrun.c:230)cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A
[     4.276286] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_fifo_underrun.c:381)intel_pch_fifo_underrun_irq_handler] *ERROR* PCH transcoder A FIFO underrun
[     4.306306] wsdisplay0 at intelfb0 kbdmux 1: console (default, vt100 emulation), using wskbd0
[    38.028227] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_sprite.c:132)intel_pipe_update_start] *ERROR* Potential atomic update failure on pipe A: -35
[   290.362255] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_sprite.c:132)intel_pipe_update_start] *ERROR* Potential atomic update failure on pipe A: -35
[     4.276634] intelfb0 at i915drmkms0
[     4.276634] intelfb0: framebuffer at 0xffff82013c4fe000, size 1024x768, depth 32, stride 4096
[     4.306654] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_fifo_underrun.c:230)cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A
[     4.306654] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_fifo_underrun.c:381)intel_pch_fifo_underrun_irq_handler] *ERROR* PCH transcoder A FIFO underrun
[     4.336675] wsdisplay0 at intelfb0 kbdmux 1: console (default, vt100 emulation), using wskbd0
[   735.396143] kern error: [drm:(/usr/src/sys/external/bsd/drm2/dist/drm/i915/intel_sprite.c:132)intel_pipe_update_start] *ERROR* Potential atomic update failure on pipe A: -35


>How-To-Repeat:

>Fix:

>Release-Note:

>Audit-Trail:

>Unformatted:

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