Monitor secundário exibindo apenas o mouse no Centos 7

Question

Eu recentemente mudei para o Centos 7, mas quando conectei meu monitor secundário via HDMI, algo está acontecendo. O GNOME é capaz de reconhecer que o segundo foi conectado, mas só consigo ver meu mouse enquanto o movo para o segundo monitor - o resto é apenas preto. Se eu arrastar uma janela da minha tela primária para a secundária, eu vejo apenas um punho fechado cercado pela escuridão.

Estou executando o Centos Linux versão 7.4.1708 (Core) e GNOME 3.22.3.

A saída para xrandr -q é

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1920x1080     60.02*+  48.03  
   1400x1050     59.98  
   1280x1024     60.02  
   1280x960      60.00  
   1024x768      60.04    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   800x600       60.00    60.32    56.25  
   700x525       59.98  
   640x512       60.02  
   640x480       60.00    59.94  
   512x384       60.00  
   400x300       60.32    56.34  
   320x240       60.05  
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1-1 connected 1920x1080+1920+0 (normal left inverted right x axis y     axis) 476mm x 268mm
   1920x1080     60.00*+  50.00    50.00    59.94  
   1680x1050     59.88  
   1400x1050     59.98  
   1600x900      60.00  
   1280x1024     60.02  
   1440x900      59.90  
   1280x960      60.00  
   1280x800      59.91  
   1280x720      60.00    50.00    59.94  
   1024x768      60.04    70.07    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   800x600       70.00    65.00    60.00    60.32    56.25  
   720x576       50.00  
   700x525       59.98  
   720x480       60.00    59.94  
   640x512       60.02  
   640x480       60.00    60.00    59.94  
   720x400       70.08  
   512x384       70.07    60.00  
   400x300       60.32    56.34  
   320x240       60.05  
  1400x1050 (0x4a) 122.000MHz +HSync +VSync
        h: width  1400 start 1488 end 1640 total 1880 skew    0 clock  64.89KHz
        v: height 1050 start 1052 end 1064 total 1082           clock  59.98Hz
  1280x1024 (0x4c) 108.000MHz +HSync +VSync
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock  63.98KHz
        v: height 1024 start 1025 end 1028 total 1066           clock  60.02Hz
  1280x960 (0x4e) 108.000MHz +HSync +VSync
        h: width  1280 start 1376 end 1488 total 1800 skew    0 clock  60.00KHz
        v: height  960 start  961 end  964 total 1000           clock  60.00Hz
  1024x768 (0x53) 133.475MHz -HSync +VSync DoubleScan
        h: width  1024 start 1100 end 1212 total 1400 skew    0 clock     95.34KHz
        v: height  768 start  768 end  770 total  794           clock  60.04Hz
  1024x768 (0x55) 65.000MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock  48.36KHz
        v: height  768 start  771 end  777 total  806           clock  60.00Hz
  960x720 (0x56) 117.000MHz -HSync +VSync DoubleScan
        h: width   960 start 1024 end 1128 total 1300 skew    0 clock  90.00KHz
        v: height  720 start  720 end  722 total  750           clock  60.00Hz
  928x696 (0x57) 109.150MHz -HSync +VSync DoubleScan
        h: width   928 start  976 end 1088 total 1264 skew    0 clock  86.35KHz
        v: height  696 start  696 end  698 total  719           clock  60.05Hz
  896x672 (0x58) 102.400MHz -HSync +VSync DoubleScan
        h: width   896 start  960 end 1060 total 1224 skew    0 clock      83.66KHz
        v: height  672 start  672 end  674 total  697           clock  60.01Hz
  800x600 (0x5b) 81.000MHz +HSync +VSync DoubleScan
        h: width   800 start  832 end  928 total 1080 skew    0 clock  75.00KHz
        v: height  600 start  600 end  602 total  625           clock  60.00Hz
  800x600 (0x5c) 40.000MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock  37.88KHz
        v: height  600 start  601 end  605 total  628           clock  60.32Hz
  800x600 (0x5d) 36.000MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock  35.16KHz
        v: height  600 start  601 end  603 total  625           clock  56.25Hz
  700x525 (0x5f) 61.000MHz +HSync +VSync DoubleScan
        h: width   700 start  744 end  820 total  940 skew    0 clock  64.89KHz
        v: height  525 start  526 end  532 total  541           clock  59.98Hz
  640x512 (0x62) 54.000MHz +HSync +VSync DoubleScan
        h: width   640 start  664 end  720 total  844 skew    0 clock  63.98KHz
        v: height  512 start  512 end  514 total  533           clock  60.02Hz
  640x480 (0x63) 54.000MHz +HSync +VSync DoubleScan
        h: width   640 start  688 end  744 total  900 skew    0 clock  60.00KHz
        v: height  480 start  480 end  482 total  500           clock  60.00Hz
  640x480 (0x65) 25.175MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock  31.47KHz
        v: height  480 start  490 end  492 total  525           clock  59.94Hz
  512x384 (0x68) 32.500MHz -HSync -VSync DoubleScan
        h: width   512 start  524 end  592 total  672 skew    0 clock  48.36KHz
        v: height  384 start  385 end  388 total  403           clock  60.00Hz
  400x300 (0x69) 20.000MHz +HSync +VSync DoubleScan
        h: width   400 start  420 end  484 total  528 skew    0 clock  37.88KHz
        v: height  300 start  300 end  302 total  314           clock  60.32Hz
  400x300 (0x6a) 18.000MHz +HSync +VSync DoubleScan
        h: width   400 start  412 end  448 total  512 skew    0 clock  35.16KHz
        v: height  300 start  300 end  301 total  312           clock  56.34Hz
  320x240 (0x6b) 12.587MHz -HSync -VSync DoubleScan
        h: width   320 start  328 end  376 total  400 skew    0 clock  31.47KHz
        v: height  240 start  245 end  246 total  262           clock  60.05Hz

Espero que alguém me ajude - isso está me enlouquecendo!