Monitor not showing entire screen real estate

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1

Hi there,

I am running Fedora 35 Workstation with Gnome. Interestingly since upgrading to Fedora 35 the screen does not move all the way to the edges. There are black bands around the edges.

Hardware

CPU: Intel i5 3570K
GPU: AMD RX 570
Monitor : LG 32QN600-B 31.5 inch model (QHD)

Sorry if this has already been solved, I couldnt find anything in the previous topics.

2

I have same experience in the past but with different brand. Maybe you could go to “Gnome Settings” and then on the display settings, try to toggle the “Adjust for TV” on or off.

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3

You also may be able to adjust the settings on the monitor itself.
What is the output of xrandr? Does it show the proper resolution & scan rate for that monitor?

The monitor is specified at 2560x1440 @ 75 Hz refresh and for full screen display probably should show the same in xrandr.

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4

thanks so much, it was switched “on” so I switched it “off” and then clicked “apply settings” and its now fixed !

However strangely it stayed switched on but is still fixed. So it did the trick, really grateful thanks a lot @oprizal

5

Thats a good idea too, the “adjust for tv” switch seemed to work but I will keep that mind if it returns,

the output is below. my refresh rate is a bit high. it says correct resolution 2560 x 1440 which is the monitor resolution. I verified this with the monitor on screen display also and they match.

[solomon@fedora ~]$ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 16384 x 16384
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 698mm x 392mm
   2560x1440     59.95 +  74.96* 
   3840x2160     30.00    25.00    24.00    29.97    23.98  
   1920x1200     59.95  
   1920x1080     60.00    50.00    59.94    30.00    29.97  
   1600x1200     59.95  
   1680x1050     59.88  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.95  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    60.00  
   832x624       74.55  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
[solomon@fedora ~]$
6

Actually that xrandr output shows the monitor in its preferred state. the monitor is designed for 2560x1440 @ 75. The * indicates the current refresh rate in use.

7

great thanks for explaining that, so how do we know if its the preferred state ? I guess check the specs of the monitor manufacturer right. does that command show the designed max resolution or the current setting?

8

In the xrandr output the line with the * shows the current setting.

If the marked value matches the device specs then everything is good.

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