Prevent button action from enabling disabled DPMS
Review Request #106794 - Created Oct. 11, 2012 and submitted
|4.8, 4.9, master|
Prevent button action from enabling disabled DPMS Button actions call triggerImpl, which leaves DPMS enabled. It can't be disabled until return from idle, as that would wake the screen. Solve this by explicitly setting DPMS timeouts to zero when DPMS is meant to be disabled - i.e. when unloading the action or when screen power management is inhibited. CCBUG: 295164
(in combination with review request #106793 ) Set power button to "Turn off screen" then press it, wait for the screen to turn off then wake the system from idle. Check 'xset -q' has expected values in various situations, e.g.: - when timed screen power saving is enabled - when it's disabled - when it hasn't been enabled in this login - when screen power saving is inhibited - when profile or configuration or activity change - when profile or configuration or activity change when screen power saving is inhibited I think this covers all cases, but please hammer away with it and see if you can find any problems I've missed.
I'm wondering if the best fix is set dpms timeouts to 0 at all times and have the dpms action use powerdevil idle timeouts to directly set dpms state. This would hopefully have less corner cases to reason about and wouldn't wake the screen or (I think) reset the timers on profile/configuration/activity change. I expect that would be something for 4.10 and master, not for 4.9 branch?