Fractional scaling 150% 175% bug on fullscreen games. Screen doesn't stretch properly leaving a big black area.

[tzell]

Fractional scaling 150% 175% bug on fullscreen games.
Screen doesn't stretch properly leaving a big black area.

Happens on a 4K monitor:


Fractional scaling settings:

100% - works fine
125% - works fine
150% - stretch bug
175% - stretch bug
200% - works fine

Any idea what could be causing this and how to fix it?

Thanks!

my system information:
xrandr

Code: Select all

Screen 0: minimum 320 x 200, current 8960 x 2880, maximum 16384 x 16384
DisplayPort-0 connected primary 5120x2880+3840+0 (normal left inverted right x axis y axis) 697mm x 392mm
   3840x2160     60.00*+  60.00    59.94  
   2560x1440     74.78    59.95  
   1920x1200     60.00  
   1920x1080     74.98    60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     59.95  
   1600x900      74.99    60.00  
   1280x1024     75.02    69.95    60.02  
   1440x900      59.89  
   1280x800      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  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    60.00    59.94  
   720x400       70.08  
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 disconnected (normal left inverted right x axis y axis)
HDMI-A-1 connected 3840x2160+0+486 (normal left inverted right x axis y axis) 598mm x 336mm
   1920x1080     60.00*+  74.99    50.00    59.94  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1280x800      60.00  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1440x576      50.00  
   1024x768      75.03    70.07    60.00  
   1440x480      60.00    59.94  
   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  
   

Code: Select all

OS: Linux Mint 21 x86_64 
Kernel: 5.15.0-43-generic 
Packages: 2875 (dpkg), 27 (flatpak) 
Shell: bash 5.1.16 
Resolution: 5120x2880, 3840x2160 
DE: Cinnamon 5.4.9 
WM: Mutter 
WM Theme: Mint-Y 
Theme: Adwaita-dark [GTK2/3] 
Icons: Mint-X-Purple [GTK2/3] 
Terminal: gnome-terminal 
CPU: AMD Ryzen 7 3700X (16) @ 3.600G 
GPU: AMD ATI Radeon RX 6700/6700 XT  
Memory: 5800MiB / 32008MiB 

[tzell]

anyone?

[antikythera]

It's still an experimental feature, it's also not meant for games but the user interface of the desktop and other applications you would struggle to see at normal resolution.

[tzell]

It's still an experimental feature, it's also not meant for games but the user interface of the desktop and other applications you would struggle to see at normal resolution.

Yes I wasn't intending for the games to scale however the scale feature seems to attempt to apply itself for fullscreen games

Is there perhaps a way to disable the 'scaling' automatically before launching games or perhaps the steam client?

[antikythera]

That auto disable would be cool, not sure how though. There is an applet which you could use to quickly switch scaling from the panel called UI Scaler for HiDPI Screens

https://cinnamon-spices.linuxmint.com/applets/view/349

[antikythera]

There is another that looks better but it only supports one display and from the photo, you have two connected?

https://cinnamon-spices.linuxmint.com/applets/view/346

[tzell]

That auto disable would be cool, not sure how though. There is an applet which you could use to quickly switch scaling from the panel called UI Scaler for HiDPI Screens

https://cinnamon-spices.linuxmint.com/applets/view/349

thank you
yes I'm using two screens

silly question - how do I install these applets? I'm new to linux and have no idea

[tzell]

ok I figured out how to install the applet,
however sadly it doesn't seem to work
doesn't scale when I choose scaling options.