Bug 107895

Summary: [Gemini Lake] HDMI 2.0 compliance test failed - HF1-12 TMDS Protocol- 6G- Basic Protocol and Scrambling
Product: DRI Reporter: JingWu Lin <jingwu.lin>
Component: DRM/IntelAssignee: Clinton Taylor <clinton.a.taylor>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: major    
Priority: high CC: intel-gfx-bugs, lakshminarayana.vudum
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard: Triaged, ReadyForDev
i915 platform: GLK i915 features: display/HDMI
Bug Depends on:    
Bug Blocks: 107905    
Attachments:
Description Flags
HF1-12 FAILED
none
kernel log none

Description JingWu Lin 2018-09-11 03:26:59 UTC
Created attachment 141515 [details]
HF1-12 FAILED

GKL fails HDMI 2.0 compliance test HF1-12 TMDS Protocol- 6G- Basic Protocol and Scrambling.

From MOI_CTS2.0u (HDMI2.0 certification rule), if more than one or no unscrambled control period per field exists than fail.
The HDMI analyzer detects 6.
Comment 1 Lakshmi 2018-09-11 06:31:18 UTC
Please try to reproduce the error using drm-tip (https://cgit.freedesktop.org/drm-tip) and kernel parameters drm.debug=0x1e log_buf_len=4M, and if the problem persists attach the full dmesg from boot.
Comment 2 JingWu Lin 2018-09-14 05:56:03 UTC
Created attachment 141555 [details]
kernel log

board: GLK RVP
kernel: Linux version 4.19.0-rc2-drm-tip-2018y-09m-04d+
Comment 3 Lakshmi 2018-09-14 10:08:47 UTC
Priority is set to Highest as this is blocking the customer to pass GKL devices as they are lacking the logo/sticker (Compliance test - pass certificate).
Comment 4 Clinton Taylor 2018-10-05 18:02:31 UTC
See patch from https://bugs.freedesktop.org/show_bug.cgi?id=107896
Comment 5 Clinton Taylor 2018-10-12 21:11:22 UTC
Updated patch V2 to Intel-gfx mailing list
Comment 6 Clinton Taylor 2018-10-23 19:03:24 UTC
new patch attached to 107896 to resolve both issues.
Comment 7 Lakshmi 2018-11-05 08:50:55 UTC
Update: This bug is not blocking anymore to the reporter. Testing is in progress, will take 1~2 weeks for the test results. Reducing the priority to High and status can be updated once the feedback is received.
Comment 8 Clinton Taylor 2018-12-10 18:23:04 UTC
Feedback was not really received. Based on initial feedback and in house testing patch will be pushed upstream.
Comment 9 James Ausmus 2018-12-11 17:34:51 UTC
Patch pushed to dinq
Comment 10 Francesco Balestrieri 2018-12-28 09:22:19 UTC
JingWu Lin, do you confirm that the issue is resolved?

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