Bug 455348

Summary: After 5.25.0 update can't increase brigtness. Screen almost unreadable in Dell Latitude
Product: [Plasma] Powerdevil Reporter: Alej <alej.c.s>
Component: generalAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: critical    
Priority: NOR    
Version: 5.25.0   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Alej 2022-06-15 17:43:58 UTC 
SUMMARY
Yesterday Neon updated to plasma 5.25.0 and broke brightness control in Dell Latitude 3410. Cant increase brightness manually and screen is almost unreadable.
I set 100% brightness from BIOS but when Neon boots, it darken the screen without a chance to increase brigthness. I set this bug critical scince it totaly block the computer use.
I try xbacklight -set 100 but nothing happens. In plasma 5.24.5 brightness controls worked just fine,

STEPS TO REPRODUCE
1.  Update Neon to 5.25.0 in Dell Latitude
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 Antonio Rojas 2022-06-15 17:47:42 UTC 

*** This bug has been marked as a duplicate of bug 454161 ***