Refresh rate KDE5

f0b · 01-16-2021, 08:29 AM

Hello!

Why option refresh rate 75Hz is disappeared?

system:

Code:

OS: Slackware 14.2 x86_64 (post 14.2 -current) x86_64 
Kernel: 5.10.7
Resolution: 1920x1080 
DE: Plasma 5.20.5 
WM: KWin 
CPU: Intel Xeon E3-1246 v3 (8) @ 3.900GHz 
GPU: Intel HD Graphics 
Memory: 1489MiB / 15667MiB

Code:

$ xrandr 
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
HDMI1 disconnected primary (normal left inverted right x axis y axis)
HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 530mm x 300mm
   1920x1080     60.00*+  50.00    59.94    59.99  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1366x768      59.79  
   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  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

Thank you in advance!

hpfeil · 01-17-2021, 07:42 PM

Could it be that you are now using 1920x1080? 75MHz is for 1280x1024.

f0b · 01-19-2021, 12:36 AM

Until I remember which update this frequency could have been chosen for 1980x1080.

hpfeil · 01-19-2021, 11:21 AM

1980x1080@60Hz is an HDTV standard. Your monitor, video card and HDMI conform to that standard. Lesser frame rates exist for the 1080p standard, as shown in your xrandr output, but there is no 75Hz for that screen resolution. Your Intel Xeon E3-1246v3 has a maximum resolution of 3840x2160@60Hz, if your monitor can support that, but, according to xrandr, probes of your monitor show its maximum screen resolution is 1980x1080@60Hz, your current resolution as indicated by the plus sign in xrandr output. You can set your resolution to 1280x1024@75Hz, if you need 75Hz. Check your monitor specification. A recent update may have increased your screen resolution to 1980x1080@60Hz, the maximum available with your monitor.

Here are some monitors that can do 1980x1080@75Hz
https://www.newegg.com/p/pl?d=75hz+monitor

Reference:
https://ark.intel.com/content/www/us...-3-50-ghz.html

f0b · 01-21-2021, 08:49 PM

Quote:

Originally Posted by hpfeil

1980x1080@60Hz is an HDTV standard. Your monitor, video card and HDMI conform to that standard. Lesser frame rates exist for the 1080p standard, as shown in your xrandr output, but there is no 75Hz for that screen resolution. Your Intel Xeon E3-1246v3 has a maximum resolution of 3840x2160@60Hz, if your monitor can support that, but, according to xrandr, probes of your monitor show its maximum screen resolution is 1980x1080@60Hz, your current resolution as indicated by the plus sign in xrandr output. You can set your resolution to 1280x1024@75Hz, if you need 75Hz. Check your monitor specification. A recent update may have increased your screen resolution to 1980x1080@60Hz, the maximum available with your monitor.

Here are some monitors that can do 1980x1080@75Hz
https://www.newegg.com/p/pl?d=75hz+monitor

Reference:
https://ark.intel.com/content/www/us...-3-50-ghz.html

https://www.newegg.com/asus-va24dqlb...-076-_-Product

I repeat once again, this frequency could be selected from the list, but after the update, it disappeared.

hpfeil · 01-25-2021, 02:52 PM

Indeed, your Asus VA24DQLB monitor can display 1920x1080 resolution at 75Hz, according to the manual, but only with an HDMI cable, which xrandr reports as HDMI2. I assume the upper right corner of the OSD shows Standard Mode 1920x1080@60Hz. Do you have Adaptive Sync enabled?

f0b · 01-26-2021, 03:59 AM

Yes, AdaptiveSync is enabled.