On Wed, Jul 21, 2010 at 18:59:40 +0200, Michal Suchanek wrote: > Excerpts from Julien Cristau's message of Wed Jul 21 17:38:49 +0200 2010: > > On Wed, Jul 21, 2010 at 16:52:21 +0200, Michal Suchanek wrote: > > > > > Package: x11-xserver-utils > > > Version: 7.5+1 > > > Severity: normal > > > File: /usr/bin/xgamma > > > > > > > > > In multi-screen configuraion the gamma can be set only on the first > > > screen. It is not obvious how to set gamma on the other screen(s), the > > > format of the -s option is not specified. > > > > > I'm not sure what you're trying to say. To set gamma on screen 0, you > > use xgamma -screen 0. > > Which sets gamma on the secondary screen when it is on or on the > primary screen when the secondary is off. > > > To set gamma on screen 1, use xgamma -screen 1. > > Which gives an X error: > X Error of failed request: BadValue (integer parameter out of range for > operation) > Major opcode of failed request: 129 (XFree86-VidModeExtension) > Minor opcode of failed request: 16 (XF86VidModeGetGamma) > Value in failed request: 0x17 > Serial number of failed request: 12 > Current serial number in output stream: 12 > This means you only have one screen. You seem to be confused about what 'screen' means in an X context. It's not the same thing as a physical monitor, in particular when using randr or xinerama. Cheers, Julien
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