Add "xscreensaver" as recommended dependency for "xfce4-power-manager"

[rainer]

Screenlocking in xfce seems to require a screensaver to be installed (personal experience and [1]).

Provided this is correct and not due to a misconfiguration or some hidden option that I haven't found yet, xscreensaver should be a recommended dependency for xfce4-power-manager.

Because without a screensaver the screen is not locked after resume from suspend/hibernate, even if that option is selected in "Powermanagement/System" and/or "Session". This may be confusing for the user and may also be a security concern.

I have tested this with xfce4-screensaver-4.16.0 and xfce-4.18.0 in a SysV-system but I suppose that xscreensaver will work accordingly (see /usr/bin/xflock4).

My first ticket here, so I ask for some lenience. Thanks.

Rainer

[1] ​https://wiki.archlinux.org/title/Xfce#Lock_the_screen

[Tim Tassonis]

In my expierience you are right that xflock4 needs some screensaver to be installed, but xflock4 is part of xfce4-session, so the dependency should really go to xfce4-session.

xflock4 has the following sequence / fallbacks:

• xfce4-screensaver-command
• xscreensaver-command
• gnome-screensaver-command

Therefore I'd suggest to add those as recommended dependencies to xfce4-session, and not to xfce4-power-manager.

Is this ok with you? As I'm in the process of updating the book to 4.18, I could do that in that changeset.

Therefore, I will close this and mark this as a duplice to https://wiki.linuxfromscratch.org/blfs/ticket/17409