Bug 208131

Summary: Lenovo X1 Yoga (4th Gen): Tablet mode not working after hibernation
Product: Drivers Reporter: Daniel (daniel-other+bugzillakernel)
Component: Platform_x86Assignee: drivers_platform_x86 (drivers_platform_x86)
Status: NEW ---    
Severity: normal CC: nate
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 5.9.6 Subsystem:
Regression: No Bisected commit-id:

Description Daniel 2020-06-10 21:28:52 UTC 
SUMMARY
With the ThinkPad X1 Yoga 4th, the tablet mode (which disables keyboard, trackpoint and trackpad) isn't correctly enabled when the screen is folded over **after waking up from hibernation**.

WORKAROUND: Suspend and wake up again. Then the tablet mode works again.

TO REPRODUCE:
1. Go into hibernation mode.
2. Wake up from there.
3. Fold over screen.

OBSERVED RESULT:
touchpad,keyboard and trackpoint still work

EXPECTED RESULT:
touchpad,keyboard and trackpoint should be disabled.
Comment 1 Daniel 2020-11-10 09:26:37 UTC 
acpi_listen doesn't report any events when the tablet is folded into tablet mode when in the state described above.