Using the radeon driver, it apparently detects my monitor's supported refresh rates with EDID (I think.) At any rate, randr doesn't let me set my refresh rate higher than 85hz, even though my monitor supports 100hz. I could try and add a modline, but I'd like to do this through randr. Is there any way to do that?
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Originally posted by TechMage89 View PostUsing the radeon driver, it apparently detects my monitor's supported refresh rates with EDID (I think.) At any rate, randr doesn't let me set my refresh rate higher than 85hz, even though my monitor supports 100hz. I could try and add a modline, but I'd like to do this through randr. Is there any way to do that?
xrandr --newmode <modeline>
xrandr --addmode <output> <modename>
xrandr --output <output> --mode <modename>
for example to add 1024x768@100Hz to the VGA port:
xrandr --newmode "1024x768_100.00" 112.25 1024 1096 1200 1376 768 771 775 816 -hsync +vsync
xrandr --addmode VGA-0 "1024x768_100.00"
xrandr --output VGA-0 --mode "1024x768_100.00"
see xrandr --help for more.
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When I try to do something similar and I get to
:~$ xrandr --addmode VGA_1 "1440x900_75.00"
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 155 (RANDR)
Minor opcode of failed request: 18 ()
Serial number of failed request: 16
Current serial number in output stream: 17
What does it mean?
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Originally posted by sundown View PostWhen I try to do something similar and I get to
:~$ xrandr --addmode VGA_1 "1440x900_75.00"
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 155 (RANDR)
Minor opcode of failed request: 18 ()
Serial number of failed request: 16
Current serial number in output stream: 17
What does it mean?
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Originally posted by agd5f View PostDid you define "1440x900_75.00" using --newmode?
Then, I ran the xrandr command to see what it says and it does say at the bottom of all the information provided:
Code:1440x900_75.00 (0x63) 136.5MHz h: width 1440 start 1536 end 1688 total 1936 skew 0 clock 70.5KHz v: height 900 start 901 end 904 total 940 clock 75.0Hz
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Originally posted by sundown View PostSure, I did: xrandr --newmode "1440x900_75.00" 136.49 1440 1536 1688 1936 900 901 904 940 -HSync +Vsync
Then, I ran the xrandr command to see what it says and it does say at the bottom of all the information provided:
Code:1440x900_75.00 (0x63) 136.5MHz h: width 1440 start 1536 end 1688 total 1936 skew 0 clock 70.5KHz v: height 900 start 901 end 904 total 940 clock 75.0Hz
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Originally posted by sundown View PostOh sorry, I was doing this on the wrong driver
OMG it worked... I can't believe I'm running in 75hz I've been dreaming for this for soooo long Thanks a lot.
How can I memorize this for the system?
Modeline "1440x900_75.00" 136.49 1440 1536 1688 1936 900 901 904 940 -HSync +Vsync
Option "PerferredMode" "1440x900_75.00"
See this page for more:
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