From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel@ucw.cz (Pavel Machek) Date: Fri, 27 Jul 2018 13:32:15 +0200 Subject: Droid 4: suspend to RAM? In-Reply-To: <20180725212853.GA1965@amd> References: <20180725200205.GA29594@amd> <20180725212853.GA1965@amd> Message-ID: <20180727113214.GA32069@amd> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi! > > > high even before modem (and thus USB) is enabled. > > > > > > Interestingly, CyanogenMod and Jolla seem to have higher power > > > consumption than stock operating system. > > > > > > (My Linux can survive for 10 hours, stock system could survive for 4 > > > days if I'm not mistaken). > > > > > > I thought I would experiment with suspend to RAM.. and it indeed > > > seemed to suspend ok, but I could not wake it up. Do I need to set up > > > wakeup with button somehow? Is suspend to RAM required for good power > > > consumption? > > > > Sorry but pm subsystem has debug mode that you can test in a easy way. > > You can even wakeup by any rtc alarm easily. > > Yes, that is how it works on PC (but there power button works, > too). Is it expected to work on Droid in v4.18? I tried setting up wakeup using RTC, but no, it does not seem to work: root at devuan:/my/tui/d4# rtcwake -m no -s 5 rtcwake: wakeup using /dev/rtc0 at Fri Jul 27 11:28:44 2018 root at devuan:/my/tui/d4# echo mem > /sys/power/state Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 181 bytes Desc: Digital signature URL: