RTC wakeup
rodlie opened this issue · comments
You can't trust upower/backend to hibernate on low battery while suspended (it did for a while on my thinkpad, but for some reason not anymore, system is unchanged), add a feature to wake up the machine after X amount of time and do a hibernate.
So, I will need to directly write to /sys/class.
Example of wakeup:
date -u --date "2019-04-04 22:57:00" +%s
write to /sys/class/rtc/rtc0/wakealarm
read status from /proc/driver/rtc since cat wakealarm always returns null.
There are two ways to solve this, either suggest a "rule" for ownership of /sys/class/rtc/rtc0/wakealarm to distros, or write a simple powerkitd daemon that can write to wakealarm (and backlight as a bonus) on behalf of powerkit. From a user perspective the last option would be the best, since it will "just work".
I still need to add the options in the config dialog, but the backend for RTC wakeup seems to work ok, I will need to test this over time.