Op 28 aug. 2014, om 15:42 heeft Lennart Poettering <lenn...@poettering.net> het volgende geschreven:
> On Thu, 28.08.14 10:50, Koen Kooi (k...@dominion.thruhere.net) wrote: > >> Hi, > > Heya, > >> I am working on a system (http://www.acmesystems.it/arietta) where I >> hooked up the button as a power key: >> >> >> https://github.com/koenkooi/linux/commit/c823e0b046efcfff61e21fa4c89d5d68090ef6de >> >> Evtest shows it doing the right thing (issuing KEY_POWER) when being >> pressed, but systemd seems to totally ignore it. I've seen this >> behaviour in the past and noticed the DE (GNOME2, old but it works) >> would pick it up and present the dialog. Since this is a headless >> system I want systemd to handle it instead of the DE (which isn't >> installed). Every doc or blog post I read says that systemd should >> already be handling it, but it isn't in my case. I suspect that >> systemd only handles ACPI powerkey events, but I haven't actually >> looked at the code. >> >> Are more people experiencing this and does someone have a workaround >> or fix? > > You have to tag your input devices with the "power-switch" udev tag, > otherwise logind won't pick up the device. > > See 70-power-switch.rules for the current default: > > SUBSYSTEM=="input", KERNEL=="event*", SUBSYSTEMS=="acpi", > TAG+="power-switch" > SUBSYSTEM=="input", KERNEL=="event*", KERNELS=="thinkpad_acpi", > TAG+="power-switch" Thanks, I've sent 2 patches to add rules for more power buttons, but... > > I'd really like to open this up, to be done on all kbds by default, but > I feel uneasy about listening to all keypresses on all keyboards by > default.... We don't want that logind is woken up on virtually *all* > keypresses on the entire system, all the time. ... patch 2/2 opens up gpio-keys for this. All the boards I have in my office use gpio-keys for things like up/down, volume or other 'control' type of things. Matrix setups use a different driver, so I don't expect this to catch proper keyboards. Having said that, I can understand if you reject 2/2. regards, Koen > > David Hermann did a kernel patch to improve the situation: > > https://www.mail-archive.com/linux-input@vger.kernel.org/msg11143.html > > With this in place, userspace can set a mask of input keys it is > interested in, and we could use that for logind to just subscribe to > power keypresses and be happy... > > Unfortunately though the patch got repeatedly ignored by the input > maintainers, even though it got resent multiple times... :-( > > Lennart > > -- > Lennart Poettering, Red Hat _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
