[iotg][ehl]Desktop only detects maximum resolution

Bug #1941847 reported by Doug Jacobs
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
intel
Fix Committed
Undecided
Unassigned
Lookout-canyon-series
Fix Released
Undecided
Unassigned

Bug Description

[Summary]EHL connected to 4k monitor with HDMI only sees the 4k resolution. Other resolutions do not show up.

Image: iotg-focal-desktop-20210813.img

[Steps to reproduce]
CDTS
Desktop, Manual, Graphics

[Expected result]
Tests should pass

[Actual result]
graphics/1_cycle_resolution_PCI_ID_0x4571 fails

[Failure rate] 100%

[Additional information]
CID: 202105-29105
SKU:
system-manufacturer: Intel Corporation
system-product-name: Elkhart Lake Embedded Platform
bios-version: EHLSFWI1.R00.3162.A01.2104131432
CPU: Intel Atom(R) x6425RE Processor @ 1.90GHz (4x)
GPU: 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:4571] (rev 01)
kernel-version: 5.11.0-1012-intel

[Stage]
Issue reported and logs collected at a later stage

Revision history for this message
Doug Jacobs (djacobs98) wrote :

Automatically attached

Revision history for this message
Doug Jacobs (djacobs98) wrote :

Automatically attached

Revision history for this message
Doug Jacobs (djacobs98) wrote :

Automatically attached

Revision history for this message
Doug Jacobs (djacobs98) wrote :

Automatically attached

Doug Jacobs (djacobs98)
description: updated
Doug Jacobs (djacobs98)
tags: added: lookout-canyon
Revision history for this message
Anthony Wong (anthonywong) wrote :
Changed in intel:
status: New → Triaged
Revision history for this message
Kent Lin (kent-jclin) wrote :

This is fixed in 1007 Kernel.
Test pass with latest daily build.

Changed in intel:
status: Triaged → Fix Committed
Revision history for this message
Doug Jacobs (djacobs98) wrote :

Retested with 5.13.0-1007. All supported modes show up.

tags: added: cqa-verified
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