Re: Programs like pcmanfm, evince, ... don't connect to dbus unless run with dbus-launch

[Danny Milosavljevic]

Hi,

On Sun, 5 Aug 2018 21:57:15 +1000
Brendan Tildesley <address@hidden> wrote:

> On 08/05/18 10:23, Danny Milosavljevic wrote:
> > Hi Brendan,
> >
> > On Thu, 2 Aug 2018 16:21:02 +1000
> > Brendan Tildesley <address@hidden> wrote:
> >  
> >> I've always had gvfs installed and it hasn't made any difference as far
> >> as I can tell  
> > Hmm, what does your ~/.guix-profile/share/dbus-1/services directory 
> > contain?  
> 
> ca.desrt.dconf.service               
> org.freedesktop.IBus.service                     
> org.gnome.FileRoller.ArchiveManager1.service 
> org.gtk.vfs.Daemon.service               
> org.gtk.vfs.UDisks2VolumeMonitor.service

> org.a11y.Bus.service                 

^^^^ Okay.

> org.freedesktop.portal.IBus.service              
> org.gnome.FileRoller.service                 
> org.gtk.vfs.GPhoto2VolumeMonitor.service  org.xfce.FileManager.service
> org.fcitx.Fcitx.service              
> org.freedesktop.Telepathy.Client.Vinagre.service 
> org.gnome.Nautilus.service                   
> org.gtk.vfs.Metadata.service              org.xfce.Thunar.service
> org.freedesktop.FileManager1.service 

> org.gnome.evince.Daemon.service                  

^^^^ Okay.

> org.gnome.Rhythmbox3.service                 
> org.gtk.vfs.MTPVolumeMonitor.service
> 
> >
> > What is the environment variable XDG_DATA_DIRS set to?  
> /home/b/.guix-profile/share:/run/current-system/profile/share:/home/b/.guix-profile/share:/run/current-system/profile/share
> 
> (Not sure why it's repeated twice.)

Okay.  To compare, try this:

$ ps $(pgrep -U `id -u` '^dbus-daemon$') |grep session |grep -v /run/user/
Notice the PID (first column) and then do:
$ cat /proc/<pid>/environ  |tr '\0' '\n' |grep XDG

Is the result the same?

> ** (pcmanfm:1051): WARNING **: 20:10:52.602: XDG_TEMPLATES_DIR is set to
> invalid path, ignoring it
> 
> (pcmanfm:1051): Gtk-WARNING **: 20:10:52.604: Unable to locate theme
> engine in module_path: "adwaita",
> 
> (pcmanfm:1051): Gtk-WARNING **: 20:10:52.605: Unable to locate theme
> engine in module_path: "adwaita",
> 
> (pcmanfm:1051): Gtk-WARNING **: 20:10:52.606: Unable to locate theme
> engine in module_path: "murrine",

Hmm, I tried to find where it explicitly looks up "adwaita" and "murrine"
in pcmanfm, but I couldn't find it.

Can you try the following?

$ export XDG_TEMPLATES_DIR=/tmp
$ gdb --args pcmanfm --g-fatal-warnings
(gdb) r
... wait until it crashes
(gdb) bt

and post the result here.  It should make it possible for us to find
out where the "lookup" instruction is.

> > I suspect that the gvfs service file is either not there, the environment
> > variable is not set or the executable mentioned inside the service file
> > is not found.
> >
> > For better debugging, try:
> >
> > youruser$ export DBUS_VERBOSE=1
> > youruser$ evince
> >
> > And post the result here.  
> ** (evince:1019): WARNING **: 20:07:46.869: Error retrieving
> accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown:
> The name org.a11y.Bus was not provided by any .service files
> Error registering document:
> GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
> org.gnome.evince.Daemon was not provided by any .service files

Aha! Accessibility bus!

I've checked, I have another dbus process for accessibility here:

$ ps -ef |grep accessibility.conf
dannym     600   596  0 Aug12 ?        00:00:00 
/gnu/store/30v35016yw7nr0r9778k585vc1g7wsn8-dbus-1.12.2/bin/dbus-daemon 
--config-file=/gnu/store/yj5plxmgaxsa1in6nx202a5xsz3y33yp-at-spi2-core-2.26.2/share/defaults/at-spi2/accessibility.conf
 --nofork --print-address 3

Do you have it?  For finding out, try:

$ ps -ef |grep accessibility.conf

If you have it, what does its /proc/.../environ contain?

pgpn3ciPiY3iD.pgp
Description: OpenPGP digital signature