Unable to change the refresh rate to 60hz with xrandr

12.04 nvidia xorg xrandr

9,441

Your xrandr -q output shows that you have 1920x1080_59.90 resolution available

You can use this to set the new resolution

xrandr --output default --mode 1920x1080_59.90

Also, if you are creating newmode using

xrandr --newmode "1920x1080_59.90"  172.51  1920 2040 2248 2576  1080 1081 1084 1118  -HSync +Vsync

You also need to add this mode using

xrandr --addmode default 1920x1080_59.90

And then set the new resolution using

xrandr --output default --mode 1920x1080_59.90

9,441

Joe

Updated on September 18, 2022

Comments

Joe over 1 year
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!
- Admin about 11 years
  
  Any reason why you had clk 172.51 instead of 172.8 as was calculated from GTF in your xrandr command?
- Admin about 11 years
  
  i don't know...
- Admin almost 7 years
  
  Just a commnent... Don't understand why this EOL Ubuntu 12.04 abandoned question got bumped to the home page when OP hasn't signed on in 4+ years (2 days after this question was posted) and therefore unlikely to confirm or deny any answers posted. Who exactly is the community that bumped to home page 10 minutes ago?
- Admin over 6 years
  
  January 15, 2018 and this question from 2013 just got bumped by the robot again.
- Admin over 4 years
  
  Aug 8, 2019 and robot bumped to home page again...
Joe about 11 years

well after i reboot the pc, xrandr -q results change to: 1920x1080 50.0* 1680x1050 51.0 52.0 1600x1024 53.0 1440x900 54.0 and it make no sense, i should have 1920x1080 with 60hz
s.m about 11 years

you have to write scripts to make it persistent on reboot
Joe about 11 years

how can i do it?
s.m about 11 years

put all the codes given above in a file and create a script, For example :Create xrandr.sh #!/bin/bash xrandr --newmode "1920x1080_59.90" 172.51 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +Vsync xrandr --addmode default 1920x1080_59.90 xrandr --output default --mode 1920x1080_59.90 Then make this script to autorun on startup
s.m about 11 years

You can even add this line Modeline "1920x1080_59.90" 172.51 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +Vsync in the Monitor section of xorg.conf file in /etc/X11