Bug 391101

Summary: Wrong refresh rates in Displays settings
Product: [Plasma] KScreen Reporter: grouchomarx.fr
Component: kcmAssignee: Sebastian Kügler <sebas>
Status: RESOLVED WORKSFORME    
Severity: normal    
Priority: NOR    
Version First Reported In: 5.12.2   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: refresh rates

Description grouchomarx.fr 2018-02-26 14:08:19 UTC
Created attachment 111010 [details]
refresh rates

Hello,
it seems that the displays settings has issues with my monitor (1920x1080 60Hz connected to a laptop via DP->HDMI).

The list of refresh rates shows:
Auto
25
*29,97*
60
50
59,94
30


29,97 is selected by default even though the monitor is correctly set to 60Hz.
If I select "Auto", the monitor switches to 1920x1080i 50Hz.


Here are the refresh rates from xrandr:

   1920x1080     60.00*+  50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     59.88  
   1400x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x576i      50.00  
   720x480       60.00    59.94  
   720x480i      60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08


KDE neon 5.12
Plasma 5.12.2
KDE Frameworks 5.43.0
Qt 5.10
Kernel 4.13

Intel graphics
Comment 1 grouchomarx.fr 2018-02-26 14:15:58 UTC
Also, selecting 25Hz, 29,97Hz or 30Hz ends up to 1920x1080i with respectively 50Hz, 59,94Hz and 60Hz, and a very jumpy picture.
Comment 2 grouchomarx.fr 2019-12-31 15:12:25 UTC
I don't have this issue anymore.