On 21/01/26 11:45AM, Lennart Poettering wrote: > On Di, 26.01.21 01:43, Kian Kasad (kian@xxxxxxxxx) wrote: > > > Hi all, > > > > After reading the documentation on logind and multi-seat (specifically > > sd-login(3) and "Multi-Seat on Linux"), I still have some questions. > > > > First of all, what exactly is multi-seat? Does it just mean allowing > > multiple sessions to be running at once, like for multiple users to be > > logged into the same desktop, even though only one will be in use at a > > time? > > No, it means you can have multiple physical seats on the same > computer. i.e. one computer with two displays, two keyboards, two > mice, and that two people can work on it, independently of each other. Ok, that makes sense. That's where I got confused; after reading the definition of a "seat" in sd-login(3), I didn't get why a daemon would be required if each program is using either all or none of the hardware at one time. Now I see that logind assigns some (or all) hardware to a specific "seat" which a program can then run on, utilizing all the hardware in the seat, even though that isn't necessarily all the hardware on the system. > > Second, why is logind needed for this? Is it not possible to do without > > logind? I've run Xorg perfectly fine on systems without logind/systemd, > > so is logind only needed for multiple sessions at once? Is it just to > > handle the graphical device(s)? > > > > Third, is multi-seat possible at all without logind? > > > > Most of these questions arose because my main OS, Artix Linux, requires > > logind (in the form of elogind) for Xorg, but I know that Xorg runs just > > fine on Alpine Linux, which does not use logind at all. > > I have no idea of those distro. I could not possible answer what they > support and what not. > > Like any software problem, you can always hack up your alternative > solution. Software is generally reimplementable. If they reimplemented > it, good for them. They can also fork our stuff, or just use our > stuff, it's Free Software after all. > > Either way, please contact the maintainers of your distro and > "elogind" for help in general, this is the wrong forum for such > questions. I wasn't necessarily asking for help with those distros or elogind. I was just using those as an example of systems running both with and without systemd's logind. Sorry for the confusion. -- Kian Kasad PGP 0x1715EEAA14DAEC14
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