Comment 15 for bug 1892296

Thanks,

Looking at your xrandr.txt there is the modeline :

  1920x1080 (0xc6) 74.176MHz +HSync +VSync
        h: width 1920 start 2558 end 2602 total 2750 skew 0 clock 26.97KHz
        v: height 1080 start 1084 end 1089 total 1125 clock 23.98Hz

That means the refresh rate accepted by your display should be :
74.176MHz / (2750 x 1125) = 23.9760808081 Hz
Due to floating point error, in monitors.xml you get 23.976079940795898 Hz

Maybe the issue comes from this ?