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Status: Untriaged
Owner: ----
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EstimatedDays: ----
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Pri: 3
Type: Bug



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Kernel reports "[drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090" on panther, Zako and Tricky.

Project Member Reported by mzhuo@chromium.org, Jan 24 2018

Issue description

Panther running R61-9765.85.0
Zako and Tricky running R65-10176.58.0. 
All of them are running meeting mode

What steps will reproduce the problem?
(1) Reboot CFM
(2)
(3)

What is the expected result?
No kernel error

What happens instead?
Kernel reports "[drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090" on panther, Zako and Tricky. 

==========================
=====IP:  100.107.146.7 =====Board: panther
grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages 

localhost ~ # cli to run  grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages
grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages
" /var/log/messagesM contents|failed to find VBIOS tables|drm:i915 
2018-01-24T14:11:44.323984-06:00 ERR kernel: [    0.264281] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T15:25:52.311197-06:00 ERR kernel: [    0.258220] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T15:31:54.281260-06:00 ERR kernel: [    0.284297] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
localhost ~ # exit
=====IP:  
=====IP:  100.107.146.12 =====Board: tricky
grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages 

localhost ~ # cli to run  grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages
grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages
" /var/log/messagesM contents|failed to find VBIOS tables|drm:i915 
2018-01-24T08:42:39.214502-08:00 ERR kernel: [    0.270921] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T11:44:47.186428-08:00 ERR kernel: [    0.265049] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T11:49:10.182733-08:00 ERR kernel: [    0.264934] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T11:52:48.167707-08:00 ERR kernel: [    0.271022] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T11:57:35.212452-08:00 ERR kernel: [    0.270932] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:08:13.206056-08:00 ERR kernel: [    0.270936] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:21:42.181627-08:00 ERR kernel: [    0.265029] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:35:25.155046-08:00 ERR kernel: [    0.264993] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:40:04.177703-08:00 ERR kernel: [    0.270917] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:45:02.189875-08:00 ERR kernel: [    0.270943] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:50:06.651786-08:00 ERR kernel: [    0.264981] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:55:30.189435-08:00 ERR kernel: [    0.264927] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:11:40.174364-08:00 ERR kernel: [    0.265059] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:16:03.233923-08:00 ERR kernel: [    0.270979] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:31:56.189416-08:00 ERR kernel: [    0.270938] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
localhost ~ # exit
=====IP:  100.107.146.26 =====Board: zako
grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages 

localhost ~ # cli to run  grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages
grep -E "Invalid ROM contents|failed to find VBIOS tables|drm:i915" /var/log/messages
" /var/log/messagesM contents|failed to find VBIOS tables|drm:i915 
2018-01-24T11:36:29.608024-08:00 ERR kernel: [    0.255527] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T11:43:36.612581-08:00 ERR kernel: [    0.256590] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T11:51:39.608389-08:00 ERR kernel: [    0.262570] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T11:56:36.563318-08:00 ERR kernel: [    0.268563] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:00:26.609377-08:00 ERR kernel: [    0.256587] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:28:19.623260-08:00 ERR kernel: [    0.262585] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T12:54:07.613065-08:00 ERR kernel: [    0.256572] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:03:29.616378-08:00 ERR kernel: [    0.262574] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:19:01.554099-08:00 ERR kernel: [    0.256574] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:21:49.608648-08:00 ERR kernel: [    0.262638] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:25:51.643420-08:00 ERR kernel: [    0.255559] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:30:40.631828-08:00 ERR kernel: [    0.256519] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
2018-01-24T13:31:55.598620-08:00 ERR kernel: [    0.255549] [drm:i915_write32] *ERROR* Unknown unclaimed register before writing to a090
localhost ~ # exit


 

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