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Old 03-18-05, 07:12 PM   #1
bani
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Question twinview gamma

it's really annoying to have twinview where the gamma of each monitor is different.

the gamma on my left monitor is about 2.8, while the right is 2.4.

using xgamma, nvidia-settings, etc, it adjusts the gamma of both monitor simultaneously -- which is exactly what i don't want.

is there any way to adjust the gamma of each monitor separately?
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Old 03-23-05, 04:17 PM   #2
bani
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Angry Re: twinview gamma

no?
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Old 04-01-05, 12:44 PM   #3
bani
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Default Re: twinview gamma

is this bug going to be addressed?
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Old 05-12-05, 05:12 AM   #4
bani
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Default Re: twinview gamma

does the hardware even support this?
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Old 07-26-05, 08:45 AM   #5
dimension128
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Default Re: twinview gamma

Looking for the same info. I remember on windows i could do this.
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Old 07-28-05, 06:33 PM   #6
ckc76
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Default Re: twinview gamma

yes, the hardware should support this because it works in windows and it shoud work in xinerama as well. but to use this in twinview there has to be a driver option implemented (the same way like it is done with "SecondMonitorHorizSync" etc.) since X11 only sees one monitor to calibrate.
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Old 07-28-05, 10:04 PM   #7
ckc76
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Default Re: twinview gamma

i just setup 2 tfts in xinerama, both calibrated with their own gamma values --> and it works :-) . it is all done in the monitor sections in the xorg.conf:

Section "Monitor"
Identifier "Monitor[1]"
...
Gamma 0.90 0.95 0.90
...
UseModes "Modes[1]"
EndSection

Section "Monitor"
Identifier "Monitor[0]"
...
Gamma 0.90 0.90 0.85
...
UseModes "Modes[0]"
EndSection

but when you set the values in the xorg.conf, make sure NOT to use any utility like nvidia-settings, xgamma, kgamma ... etc: they all seem to store their own values in different files and the one program doesnt know waht the otherone does! in my case i had to "clean up" the /~.nvidia-settings-rc and ~/.kde/share/config/kgammarc befor only the values from xorg.conf were "cleanly" taken.

by the way: if you need some nice images to adjust your monitor: this is definitly a nice little webpage http://trikuare.cx/art/tut/gamma/ !

hope i could help somone else.
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