Bug#419960: `xset dpms force ???' has no effect

[Brice Goglin <Brice.Goglin@ens-lyon.org>]

Matt Kraai wrote:
> Package: xserver-xorg-video-vesa
> Version: 1:1.3.0-1
>
> When I run `xset dpms force ???', where ??? is standby, suspend, off, or 
> on, nothing happens.  Here's the lines from /var/log/Xorg.0.log that 
> contain "DPMS":
>
>   
>> (II) Loading extension DPMS
>> (II) VESA(0): No DPMS capabilities specified; RGB/Color Display
>> (**) VESA(0): DPMS enabled
>>     


Did DPMS ever work on this screen? With another machine/driver?

I am not familiar at all with this code, but it looks like the "no DPMS
capabilities specified" comes from EDID/DDC, so it might mean that the
screen does not tell the X server that it supports DPMS.

Brice