My TV supports 100/120hz output. I tried the following commands to add the mode:
find the magic numbers:
$ cvt 1920 1080 100
# 1920x1080 99.90 Hz (CVT) hsync: 114.58 kHz; pclk: 302.50 MHz
Modeline "1920x1080_100.00" 302.50 1920 2072 2280 2640 1080 1083 1088 1147 -hsync +vsync
Add the new mode:
$ xrandr --newmode "1920x1080_100" 302.50 1920 2072 2280 2640 1080 1083 1088 1147 -hsync +vsync
have a look at xrandr to check the mode is created correctly:
1920x1080_100 (0xec) 302.5MHz
h: width 1920 start 2072 end 2280 total 2640 skew 0 clock 114.6KHz
v: height 1080 start 1083 end 1088 total 1147 clock 99.9Hz
Now to the good part, add the mode to my HDMI output:
$ xrandr --addmode DFP2 1920x1080_100
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 157 (RANDR)
Minor opcode of failed request: 18 (RRAddOutputMode)
Serial number of failed request: 32
Current serial number in output stream: 33
I did the same for 120Hz, same issue. Is there anyone who can help me with this?
