2014/1/12 PCMan <pcman...@gmail.com>
> Well, we already have lxsession, but for some reason, it does not start on
> my laptop sometimes and I haven't find out the cause yet. I also did some
> hack with lxsession in my experimental branch trying to simplify its
> codebase, such as replacing all app launching part with xdg autostart spec
> and deprecate others. However, currently apps are launched in several
> different ways in lxsession and some are coupled with some external gtk
> tools and changing this part will break them. So I stopped the work
> temporarily since I have no good solution at the moment. Instead, I took
> some time to fix the original razor-session and rename it to lxqt-session.
> Now it's an alternative lxsession. I added config files required for using
> lxqt-session in the "lxqt-session" branch of
> lxqt-common repo. With that branch, LxQt will run lxqt-session instead of
> lxsession. I also did some more hack to replace the two busy loops inside
> lxqt-session with some X11 event handling tricks.
> Currently lxqt-session works out of the box with only two issues remained.
> * Much more memory usage compared with lxsession. (more than doubled)
>
How much is it in absolute numbers?
> * no settings daemon, no xsettings (this can be solved by runing lxsession
> as a settings daemon, but this will increase memory usage, again)
>
> Options I can figure out to improve the current condition are:
> 1. do refactor for lxsession, but care must be taken not to break its gtk
> support.
> 2. add xsettings and settings daemon support to lxqt-session and keep
> optimizing it to get memory usage lower
> 3. do not put setting daemon stuff in lxqt-session. Extract the settings
> daemon part from lxsession, and run it as a separate autostart app in
> lxqt-session.
>
>
As a strong believer in 'do-one-thing-and-do-it-well', I'd vote for 3. It
will also make it easier for someone that wants to run another session
manager.
br. Chr.
> About systemd:
> I studied session management with systemd a little bit. It's not suitable
> for our use because of the following reasons.
> 1. it requires additional config files with its own format and cannot use
> existing xdg autostart files at all.
> 2. it cannot support DE-specific config files (OnlyShowIn, NotShowIn). It
> seems that you cannot create different sessions for different DEs or
> different sets of profiles for the same DE.
> 3. Doing hacks to make things work with systemd and keep it compatible
> with others will be much more work than just writing our own session
> manager. So after some evaluation, now I'm against the idea of replacing
> the session management part with systemd.
>
> About freedesktop.org xsettings spec:
> I also hacked the xsettings code of gtk 2 and gtk 3. It seems that they
> share the same set of settings, but if some config values are missing from
> xsettings, they'll be read from falback source, that's gtk-2.0.rc in gtk2
> and ~/.config/gtk+-3.0/settings.ini in gtk 3.
> So, we can remove Gtk/ThemeName key from our xsettings daemon so gtk2 and
> gtk3 will read that value from their own config files and won't be forced
> to use the same value from xsettings anymore.
> With this fix, xsettings can be safely kept and remain work well for gtk2
> and gtk3 at the same time. So we don't need to deprecate xsettings.
>
> Any comments? Thanks!
>
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