On Tue, Apr 24, 2012 at 6:18 AM, Martin Pitt <martin.p...@ubuntu.com> wrote: > Hello Mystilleef, >
Hello Martin! Thanks for your response. > Mystilleef [2012-04-24 4:22 -0400]: >> What upower dbus signal do I need to listen to when my >> laptop screen is turned on or off by gnome-screensaver or >> gnome-power-manager? > > None. This is not the domain of upower, nor kernel uevents. This is > not even an XRandR event (which also sends notifications, but > different ones). I believe gnome-screensaver just uses the equivalent > of "xset dpms force off" (through a library interface). > > However, I am not aware that DPMS provides notifications, and [1] and > its lack of responses do not rise my hopes. > I pray this is not so. And if it is, then it is embarrassing since every other platform I know off (windows, mac, android, iphone), provides signals for when the screen is turned on/off. In my presumptuous mind, I like to believe Linux is superior to most of those platforms. :-) >> The solution I've found so far is to run a script that >> resets the screen after a resume operation. Placing the >> script in /etc/sleep.d does the trick. > > Indeed that is the recommended approach. > >> However, this doesn't work when resuming the screen alone from >> sleep. > > So I take it this "sleep" is not "suspend to RAM", but you mean > "switching off the monitor on idle"? > Yes! Sorry for the confusion. GNOME Screensaver, I think, turns off my screen, as a power saving measure, a few seconds after the screensaver is activated and locked. About 5 minutes later the laptop is suspended to RAM. My problem is __before__ the laptop is suspended to RAM and when the screen is completely powered off. If I move the mouse, or touch the keyboard, to wake the screen, I get the screen corruption I described earlier. Bear in mind that at this point the laptop is not yet suspended to RAM. So the scripts in /etc/sleep.d/ do not run. I was hoping for something like a /etc/dpms.d/ folder where I can run my script when the screen is woken up before the laptop is suspended. Or a signal that alerts me when the screen is turned on or off. At the moment, I'm using the "ActiveChanged" DBus GNOME Screensaver signal. It doesn't work properly. The signal gets emitted when the screensaver is (de)activated but not when the screen is turned on or off. So I have to type my password blind to unlock the screensaver before my script is run. GNOME Power Manager used to have a DPMS signal a few years ago. Currently, it looks like the DBus API for GNOME Power Manager has been scrapped. I'm thinking if GNOME Screensaver is responsible for turning on/off the screen perhaps it can emit a signal after those operations? _______________________________________________ devkit-devel mailing list devkit-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/devkit-devel
