DPMS/Radeon - screen keeps switching back on

[Kevin Shanahan]

Hi,

I have a problem with DPMS that started after upgrading from xorg
6.8.2 to 6.9 (Debian). When I type: "xset dpms force off", the laptop
screen switches off, as I want it to, but a few seconds later it
switches back on again. Xscreensaver doesn't seem to switch off the
screen as it used to either.

I couldn't find any way to configure extra logging from X as to what
event is causing the screen to wake up again. Does anyone have any
ideas or things to try?

Thanks,
Kevin.