WIKI Liberasys

less /var/log/Xorg.0.log
gtf 1366 768 75

  # 1368x768 @ 75.00 Hz (GTF) hsync: 60.15 kHz; pclk: 110.19 MHz
  Modeline "1368x768_75.00"  110.19  1368 1456 1600 1832  768 769 772 802  -HSync +Vsync

gtf 1366 768 60

  # 1368x768 @ 60.00 Hz (GTF) hsync: 47.70 kHz; pclk: 85.86 MHz
  Modeline "1368x768_60.00"  85.86  1368 1440 1584 1800  768 769 772 795  -HSync +Vsync

"1366x768x63.0"   82.05  1366 1452 1538 1624  768 782 792 802 -hsync -vsync (50.5 kHz P)
"1360x768x59.8"   84.75  1360 1432 1568 1776  768 771 781 798 -hsync +vsync (47.7 kHz d)
"1360x768x60.0"   72.00  1360 1408 1440 1520  768 771 781 790 +hsync -vsync (47.4 kHz d)

xrandr --newmode "1366x768x63.0"   82.05  1366 1452 1538 1624  768 782 792 802 -hsync -vsync
xrandr --addmode eDP1 "1366x768x63.0"
xrandr --output eDP1 --mode "1366x768x63.0"

xrandr --newmode "1360x768x59.8"   84.75  1360 1432 1568 1776  768 771 781 798 -hsync +vsync 
xrandr --addmode eDP1 "1360x768x59.8"
xrandr --output eDP1 --mode "1360x768x59.8"

xrandr --newmode "1360x768x60.0"   72.00  1360 1408 1440 1520  768 771 781 790 +hsync -vsync
xrandr --addmode eDP1 "1360x768x60.0"
xrandr --output eDP1 --mode "1360x768x60.0"