[iotg][ehl]Desktop test to rotate screen fails

[Doug Jacobs]

[Summary]The graphics test that rotates the display fails.
In addition, if you go to Settings->Display and try to do this yourself it also fails.

Image: iotg-focal-desktop-20210813.img

[Steps to reproduce]
Run CDTS
Select Graphics

or
Settings->Display
Select other orientation for the dislay

[Expected result]
Display should rotate appropriately

[Actual result]
Setting has no effect

[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

[Doug Jacobs (djacobs98)]

Automatically attached

[Doug Jacobs (djacobs98)]

Automatically attached

[Doug Jacobs (djacobs98)]

Automatically attached

[Doug Jacobs (djacobs98)]

Automatically attached

[Anthony Wong (anthonywong)]

Need output from xrandr, Doug please provide.

Please also try running the following command, and see if the screen can rotate:
xrandr --output `xrandr --listactivemonitors | awk '{ print $4 }'` --rotate left

[Anthony Wong (anthonywong)]

The reason for this bug should be https://bugs.launchpad.net/intel/+bug/1938298, meaning the gpu is not actually being used by i915. A kernel update is needed to remove the force probe protection.

Meanwhile, one can add the kernel option i915.force_probe=0x4571 while booting.

[Doug Jacobs (djacobs98)]

Retested on EHL-Intel board with 20211013 build of Desktop which includes the updated graphics drivers.

Screen rotate works as expected.