You're right, it is calling /sbin/poweroff, I made a wrapper to see what was going on there as you suggested. While using the wrapper (to prevent an actual poweroff), I noticed:
- 'udevadm monitor -e' logs no events - No arguments are supplied to /sbin/poweroff - '/sbin/poweroff' gets called multiple times (I counted 70 times) Now, I'm not sure what explains the latter, but here's a guess. The event device that systemd-logind is listening to is exposed by the gpio- polled keybard driver, which I believe means that the GPIO line is polled at a regular interval and, if triggered, results in the kernel synthesizing a poweroff keyboard code. Perhaps it generates a new press each time it is polled and found to be asserted. I also notice that if I make the wrapper a 1-and-done - i.e., I set a flag the first time we're called and turn subsequent /sbin/poweroff calls into no-ops, things behave as expected - swapoffs and umounts before powerdown. So, it seems like multiple poweroff calls in succession result in the described behavior, is that expected? I wonder if you'd be able to reproduce this by nintendo advantaging a poweroff wrapper that does rapid-fire non-blocking calls to the real poweroff? We could also experiment with asking the vendor to workaround this in firmware (assuming this is considered a bug) by disabling autorepeat and increase the poll interval to something higher. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1349566 Title: systemd-logind triggered poweroffs ignore upstart services Status in “systemd” package in Ubuntu: Incomplete Bug description: systemd-logind has a facility to detect non-ACPI power-off events (e.g. a power button push) and initiate a system shutdown. This facility works in Ubuntu - it manages to shutdown the sysvinit services, but upstart services do not appear to be cleanly shutdown. Among other things, it means that local filesystems don't get properly unmounted. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1349566/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
