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LauPro
n00b
Joined: 05 Jan 2004
Posts: 43
Location: Gelderland, The Netherlands
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 Posted: Mon Apr 08, 2013 9:59 pm Post subject: ddccontrol with NVidia broken? |
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I used to use ddccontrol for changing my gamma on my displays (I have 3 of them). Some time ago it got broken and I was not been able to fix it.
Currently the ddccontrol-program says 'DDC/CI Supported: No'. What can be wrong? I have i2c compiled into the kernel and I use the NVidia binary driver, I don't use a framebuffer. |
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wuzzerd
Guru
Joined: 05 Jan 2005
Posts: 467
Location: New Mexico
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| Posted: Tue Apr 09, 2013 1:41 am Post subject: Re: ddccontrol with NVidia broken? |
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I never could get it to work, I don't think Nvidia supports it. If you use nvidia-drivers nvidia-settings is available.
If you just want to set gamma values emerge xgamma. Simple commands like:
| Code: | xgamma -gamma 1.3
xgamma -rgamma 1.4 -bgamma 1.2 -ggamma 2.
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HTH |
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LauPro
n00b
Joined: 05 Jan 2004
Posts: 43
Location: Gelderland, The Netherlands
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| Posted: Fri Apr 12, 2013 10:16 pm Post subject: |
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| I really would like to use the DDC because I want to change the brightness, not the gamma. Strange thing is the screen DPI readout does work... |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Sat Apr 13, 2013 5:19 pm Post subject: |
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| The old ddccontrol used direct PCI access to change monitor settings. The new one uses the standard kernel I2C interfaces, which doesn't work with the blob for obvious reasons. |
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