nvidia 그래픽 카드가 없는 RHEL 8 에서 가상 모니터설정

nvidia 그래픽 카드가 없는 RHEL 8 에서 가상 모니터설정

1.   yum install xorg-x11-drv-dummy

2.    vi /etc/X11/xorg.conf  

Section "Device"
Identifier "DummyDevice"
Driver "dummy"
Option "ConstantDPI" "true"
Option "IgnoreEDID" "true"
Option "NoDDC" "true"
VideoRam 2048000
EndSection
Section "Monitor"
Identifier "DummyMonitor"
HorizSync 5.0 - 1000.0
VertRefresh 5.0 - 200.0
Modeline "2560x1440" 42.12 2560 2592 2752 2784 1440 1475 1478 1513
Modeline "1920x1440" 69.47 1920 1960 2152 2384 1440 1441 1444 1457
Modeline "1920x1200" 26.28 1920 1952 2048 2080 1200 1229 1231 1261
Modeline "1920x1080" 23.53 1920 1952 2040 2072 1080 1106 1108 1135
Modeline "1600x900" 33.92 1600 1632 1760 1792 900 921 924 946
Modeline "1440x900" 30.66 1440 1472 1584 1616 900 921 924 946
ModeLine "1366x768" 72.00 1366 1414 1446 1494 768 771 777 803
Modeline "1280x800" 24.15 1280 1312 1400 1432 800 819 822 841
Modeline "1024x768" 18.71 1024 1056 1120 1152 768 786 789 807
EndSection
Section "Screen"
Identifier "DummyScreen"
Device "DummyDevice"
Monitor "DummyMonitor"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "2560x1440" "1920x1440" "1920x1200" "1920x1080" "1600x900" "1440x900" "1366x768" "1280x800" "1024x768"
virtual 2560 1440
EndSubSection
EndSection  

   virtual 1920 1080 <<<< 해상도에 맞게 설정