Bug 447154

Summary:	Automatic screen rotation is inverted in 90 degree (left/right) on 2-in-1 laptop.
Product:	[Plasma] kwin	Reporter:	Alan <alan90000>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	nate, xaver.hugl
Priority:	NOR
Version:	5.23.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Alan 2021-12-18 02:05:24 UTC

SUMMARY
***
I've got a 2-in-1 laptop. The automatic screen rotation works well but when I flip the screen to the left or to the right (90 degree), the screen is inverted (the task bar is located above whereas it should be at the bottom). So, it is no good. iio-sensor-proxy is installed and my laptop is well defined in 60-sensor.hwdb file (ACCEL_MOUNT_MATRIX=-1, 0, 0; 0, 1, 0; 0, 0, 1).
***


STEPS TO REPRODUCE
1. Start a Plasma Wayland Session
2. Enable Automatic screen rotation, even when not in tablet mode
3. Turn my laptop in all directions. 

OBSERVED RESULT

Normal mode = ok.
360 degree= ok.
90 degree left= screen inverted.
90 degree right= screen inverted.

EXPECTED RESULT

90 degree left= screen not inverted.
90 degree right= screen not inverted.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Manjaro 21.2 rc1
KDE Plasma Version:  5.23.4
KDE Frameworks Version: 5.88
Qt Version: 5.15.2

Comment 1 Zamundaaa 2021-12-21 14:28:54 UTC

Please check the output of "monitor-sensor" for whether or not the rotation sensor itself is working correctly, it's most likely a driver bug / hardware quirk

Comment 2 Alan 2021-12-22 13:56:28 UTC

Hello,

here are the results of monitor-sensor:

Right: Right-up
Horizontal: normal
Left: Left-up.

Thanks 

Regards.

Comment 3 Nate Graham 2022-01-11 23:25:02 UTC

Works fine for my 2-in-1 FWIW, so it's at least not universally broken.

Comment 4 Zamundaaa 2022-01-12 08:05:06 UTC

Definitely a driver / configuration issue then. AFAIK right should be "left up" and vice versa, the ACCEL_MOUNT_MATRIX probably needs adjusting