Bug 65988

Summary: [HSW] "More than 8 outputs detected" before entering run level 3
Product: DRI Reporter: shui yangwei <yangweix.shui>
Component: DRM/IntelAssignee: Daniel Vetter <daniel>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: major    
Priority: medium    
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg: "More than 8 outputs detected" error message
none
tune down DIDL warnings none

Description shui yangwei 2013-06-21 02:25:43 UTC 
Created attachment 81143 [details]
dmesg: "More than 8 outputs detected" error message

Environment:
-----------------------
Kernel: (drm-intel-next-queued)04c23c6203954cc38a34c86b4dd0686a1b1a53de
Some additional commit info:
Author: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date:   Wed Jun 12 17:27:30 2013 -0300

    drm/i915: rename intel_dp_destroy to intel_dp_connector_destroy


Description:
-----------------------
Just boot up one HSW machine, without any display port connected, the error messages "More than 8 outputs detected via ACPI" will be clearly seen in dmesg.
I have tried -next-queued and -fixes kernels, all have this issue. I also test it on many old kernels, and this issue reproduced. All of our HSW platform have this problem. I test other platforms just like IVB,ILK; and there's not this issue. 

There's a related Internal Bugzilla bug:
bug #769 : [HSW ULT C4] "More than 8 outputs detected" before entering run level 3

Reproduce steps:
----------------
1. without display port connected
2. Boot HSW machine to init 3 run level
3. dmesg | grep -i "8 output" 

Current result:
----------------
We are getting the following error by booting to level 3

[    1.849066] i915 0000:00:02.0: More than 8 outputs detected via ACPI

Expected result:
----------------

DUT need to boot to init 3 without any error message.
Comment 1 Daniel Vetter 2013-06-24 16:33:17 UTC 
Created attachment 81349 [details] [review]
tune down DIDL warnings
Comment 2 shui yangwei 2013-06-25 03:45:52 UTC 
(In reply to comment #1)
> Created attachment 81349 [details] [review] [review]
> tune down DIDL warnings

Test with latest -next-queued, this error message disappeared. I find the patch have been loaded on -next-queued.
Comment 3 Elizabeth 2017-10-06 14:45:42 UTC 
Closing old verified.

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