Redshift not working

[respire]

Hi,

When I run the following command:

$this->bbcode_second_pass_code('', 'redshift -l 00:00 -t 1500:1500')

I get the following output:

$this->bbcode_second_pass_code('', '
Gamma ramp size too small: 0
Failed to start adjustment method randr.
Trying next method...
Using method `vidmode'.
')

And nothing happens, the command doesn't crash but the screen colours don't change.

Could that be a video driver issue? I'm have ` xf86-video-fbdev` and `xf86-video-vesa` installed.