On 10/30/2016 03:48 PM, yaqu wrote: > On Sun, 30 Oct 2016 03:28:39 -0700 (PDT), "Mike A." > <[email protected]> wrote: > >> But if I open the application menu band then close the lid, the >> screensaver does not kick in. When I open the lid later, I can >> start using the machine just where I left it. >> >> I am running Qubes 3.2 with Xfce. >> >> Can anyone else recreate this, or is it just a problem locally >> here (user error at my end)? > > I have tested it on Lenovo T520 (R3.2, Xfce) and got the same > behaviour - closing lid has no effect while appmenu is opened. I have > tested it with various settings in Xfce Power Manager (lock screen, > suspend, switch off display). When appmenu is closed, closing lid > works as expected. > > Additionally, locking screen manually (Ctrl-Alt-L) doesn't work too > while appmenu is opened. > It's a known problem of X (as an architecture); it prevents any succesful implementation of the concept of lock screens. It does not only affect Xfce, but all other desktop environments - actually, it affects all X11 implementations on any platform because screen locking is a scenario not provided by the architecture. You may check on https://blog.martin-graesslin.com/blog/2015/01/why-screen-lockers-on-x11-cannot-be-secure/ for an extended explanation of the concept, from the perspective of KDE developers. One common symptom is the one you described; i.e. opening any menu prevents screen-savers or screen-lockers from running.
Our only reasonable hope in the relatively-near future is Wayland, whose architecture does provide for a screen-locking scenario; the adoption in Qubes may not be straightforward because of the way windows are cloned from the VMs into dom0. In short, qubes-guid needs to be able to screengrab every window, which is something Wayland tries to prevent for privacy and security concerns. -- Alex -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/07d28996-1615-6d96-7941-d0513c4a339d%40gmx.com. For more options, visit https://groups.google.com/d/optout.
