bshah created this revision. bshah added reviewers: Plasma, broulik. Restricted Application added a project: Plasma. Restricted Application added a subscriber: plasma-devel.
REVISION SUMMARY In normal backlight subsystem's drivers typical workflow is, - setBrightness gets called - it writes to sysfs file using backlight helper - kernel sends uevent for brightness change - onDeviceChanged is triggered - we update cache value However in case of leds subsystem, kernel doesn't send uevent for brightness change, hence uevent is never triggered and this doesn't update cached value of brightness, resulting in DBus signal for brightnessChanged never being emitted. TEST PLAN Tested on Nexus 5 which uses leds subsystem REPOSITORY rPOWERDEVIL Powerdevil BRANCH workaround-broken-backlight-driver (branched from master) REVISION DETAIL https://phabricator.kde.org/D2470 AFFECTED FILES daemon/backends/upower/powerdevilupowerbackend.cpp daemon/backends/upower/powerdevilupowerbackend.h EMAIL PREFERENCES https://phabricator.kde.org/settings/panel/emailpreferences/ To: bshah, #plasma, broulik Cc: plasma-devel, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas
