* Jan Alexander Steffens <[email protected]> [2015-02-14 06:02 +0100]: > On Sat, Feb 14, 2015 at 5:34 AM, Gustavo De Nardin (spuk) > <[email protected]> wrote: > > Excuse the ignorance, but why is it a problem if every keyboard would get > > the 'power-switch' tag (or if it wouldn't be needed)? For example, would it > > be a problem if a distro adds the power-switch tag to all keyboards by > > default? If the kernel is in a sleep state, how would it matter to filter > > such events? Or is the idea for it to be able to filter such events > > immediately after being awoken and then get back to the sleep state? > > Not "wakeup" from the system sleeping, but the logind process > sleeping. To react to power key presses, logind has to process every > keypress and filter for the right keys itself. This is why it only > listens to special "keyboards" with a limited number of keys. If it > would listen to all keyboards, the logind process would have to do > work on every keypress from the user, even though if only cares about > a vanishingly small fraction of them. Lennart would like the kernel to > do the filtering before sending the presses to logind to avoid the > overhead.
Got it. Thanks. -- Gustavo De Nardin _______________________________________________ systemd-devel mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/systemd-devel
