Bug#464470: Disabling, and then re-enabling, DPMS does not work.
forcemerge 397197 464470
thank you
Brandon wrote:
> Package: xserver-xorg-core
> Version: 2:1.3.0.0.dfsg-12lenny2
>
> DPMS works as expected at first, but after disabling and then
> re-enabling it, the display will not turn off again. You can trigger
> this with an app like MPlayer that disables DPMS on startup and
> re-enables it at exit, or simply with xset.
>
> Steps to reproduce:
> 1) Run "xset dpms 5 5 5". Display turns off after 5 seconds without
> input, as expected
> 2) Run "xset -dpms". Display now stays on, as expected.
> 3) Run "xset +dpms". Display continues to stay on, even after 5 seconds
> without input.
>
> To confirm, the relevant xset q output after running xset +dpms is:
>
> DPMS (Energy Star):
> Standby: 5 Suspend: 5 Off: 5
> DPMS is Enabled
> Monitor is On
>
> The only way to get DPMS working again is to re-run the "xset dpms 5 5
> 5" command, or to re-start your xserver.
>
> I am using the nvidia drivers from stable. According to this bug report
> for Ubuntu:
> https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/78783
> this bug is also present when using the nv drivers.
>
It also occurs with the (old non-RandR 1.2) ATI driver, as reported in
#397197. I am merging these bugs. I think I may have seen a relevant
commit recently that could fix this, but I can't find it.
Brice
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