My monitor supports 1920×1080 @ 60hz (LG W2486L) and graphic card (GeForce 9400 GT) using Ubuntu 12.04.
When I type xrandr -q
I get this:
xrandr -q xrandr: Failed to get size of gamma for output default Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080 default connected 1920x1080+0+0 0mm x 0mm 1920x1080 50.0* 1920x1080_59.90 59.9 1920x1080_60.00 60.0
Right now the refresh rate is on 50 and hurt my eyes real bad. So I'm trying to change it to 60hz:
xrandr --output default --mode 1920x1080_60.00
xrandr: Failed to get size of gamma for output default
What I can do? I tried
gtf 1920 1080 60.0 # 1920x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 172.80 MHz Modeline "1920x1080_60.00" 172.80 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +Vsync xrandr --newmode "1920x1080_60.00" 172.51 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +Vsync xrandr: Failed to get size of gamma for output default X Error of failed request: BadName (named color or font does not exist) Major opcode of failed request: 153 (RANDR) Minor opcode of failed request: 16 (RRCreateMode) Serial number of failed request: 19 Current serial number in output stream: 19 xrandr --output default --mode 1920x1080_60.00 xrandr: Failed to get size of gamma for output default
Someone have the solution for this? I can't work on the PC like that, 50Hz is very low and can't look at the screen more than 5 mins.
Thank you!
clk 172.51
instead of172.8
as was calculated from GTF in your xrandr command?community
thatbumped to home page
10 minutes ago?