Bug 435311

Summary: Laptop display won't automatically turn on after opening the lid
Product: [Plasma] Powerdevil Reporter: Fushan Wen <qydwhotmail>
Component: generalAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: normal CC: nate
Priority: NOR Keywords: wayland
Version: 5.21.3   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Bug Depends on:    
Bug Blocks: 428525    

Description Fushan Wen 2021-04-03 11:36:17 UTC
SUMMARY
Laptop display won't automatically turn on after opening the lid.

STEPS TO REPRODUCE
1. Close the laptop lid.
2. Wait until screen timeout is reached. (Settings-Power Management-Energy Saving-On AC Power-Screen Energy Saving-Switch off after)
3. Open the laptop lid.

OBSERVED RESULT
Laptop display won't automatically turn on after opening the lid, instead mouse or keyboard interactions are needed to turn on the display.

EXPECTED RESULT
When the laptop lid is closed, after screen timeout is reached (Settings-Power Management-Energy Saving-On AC Power-Screen Energy Saving-Switch off after), open the laptop lid, laptop display should automatically turn on.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ubuntu 21.04
(available in About System)
KDE Plasma Version: 5.21.3
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
It seems the bug is related to Wayland, for the bug doesn't appear in X session.
Comment 1 Nate Graham 2021-04-05 17:32:02 UTC

*** This bug has been marked as a duplicate of bug 428424 ***