25 second delay in recent update

eccerr0r · Posted: Sat Jun 03, 2023 5:21 pm Post subject: 25 second delay in recent update

Not sure what package update happened recently, but now a lot of applications have a 25 second delay before anything happens. This is happening on two systemd/gnome/xfce4 machines but I'm using xfce4 despite gnome is installed.

Pulling up firefox, eog, gnome-disks, epiphany, evince, and others take 25 seconds before the window pops up. Another thing is while Evolution comes up right away, it takes 25 seconds before I can read any mail.
There are programs that don't incur delays and work fine: pavucontrol, gnome-mines, gnome-terminal, and many more does not incur the 25 second delay.

I'm not sure what it's stopping on, it does not appear to be network related, anyone happen to know what could cause this 25 second delay? (This is exactly 25 second timeout on poll() according to strace...)

My guess is actually a dbus or local socket but can't put my finger on it... I think it's also specific to only a few specific GUI/desktop applications, I don't see it in CLI applications.

--- added more programs that exhibit this behavior and ones that do not ---
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figueroa · Posted: Sun Jun 04, 2023 3:44 am Post subject:

Launch apps in a terminal and see what might be happening. If a verbose option is available, use it.
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Ionen · Developer Joined: 06 Dec 2018 Posts: 2851

Afaik recent (rare) cases of this happening were related to attempts to resolve the system's hostname timing out and could be resolved by adding it to /etc/hosts.

Not that I looked closely at this, and not sure why it started happening now.

eccerr0r · Posted: Sun Jun 04, 2023 5:12 am Post subject:

eog and gnome-disks I can readily reproduce, alas no diagnostic output... firefox works fine if I have it running and it forks new windows but if all windows are closed it invokes the delay.

I really don't think it's a hostname issue, I run a caching nameserver and have my caching+soa nameserver resolve all my local hostnames as I do use it to simplify operations. Also what's weird is the sole difference is the 800+ packages that were merged...

I didn't compile with debug symbols yet but the backtrace library stack appears to be libgio libgobject libhandy libgobject libhandy libgobject libgio libglib poll() for gnome-disks and is very similar for eog.

The interesting function name is g_dbus_proxy_new_for_bus_sync - but no other debug symbols or call params to discern the issue. I might have to build full debug symbols into glib to see what's going on...

------------

FSCK

Has something to do with Gnome. When I'm in Gnome it works fine. Just have a problem in xfce4. Perhaps something to do with tumbler?

Also I am using lightdm so I don't think I'm mucking with xinitrc.
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GDH-gentoo · Posted: Sun Jun 04, 2023 2:24 pm Post subject:

If this is a D-Bus-related timeout, it might be easier to run dbus-monitor on the per-login session message bus (the default).
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eccerr0r · Posted: Sun Jun 04, 2023 4:04 pm Post subject:

looks like this is the last dbus access before the hang:

GDH-gentoo · Posted: Sun Jun 04, 2023 5:05 pm Post subject:

It looks like xdg-desktop-portal is not running, fails to run, or something like that. org.freedesktop.portal.Desktop is that program's well-known bus name.
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eccerr0r · Posted: Sun Jun 04, 2023 5:26 pm Post subject:

Translation needed?

GDH-gentoo · Posted: Sun Jun 04, 2023 5:58 pm Post subject:

eccerr0r · Posted: Sun Jun 04, 2023 10:12 pm Post subject:

Ah.

The package is installed (binary is in /usr/libexec) and it appears that there's also a gnome version hence I don't see the same issue in gnome.
Now the question is why is it failing to run ...

Should there be a /usr/share/xdg-desktop-portal/portals specific to the non gnome version... is the gtk.portal file the generic one?
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GDH-gentoo · Posted: Sun Jun 04, 2023 11:29 pm Post subject:

eccerr0r · Posted: Mon Jun 05, 2023 12:20 am Post subject:

eccerr0r · Posted: Tue Jun 06, 2023 2:50 am Post subject:

Okay I have a hack solution that seems to work: I copied the service files for xdg-desktop-portal-*service to /etc/systemd/user and changed the target requirements from graphical-session.target to just graphical.target ... so far this is working fine for xfce4 and the delay is gone, but might break other things.

The problem seems to be that gnome actually reaches graphical-session.target but xfce4 does not. I'm using gdm on one of the two boxes and lightdm on the other. Ultimately this is a systemd issue it seems, that affects just xfce4.

What would be a better, more generalized solution?
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eccerr0r · Posted: Mon Jun 19, 2023 7:13 pm Post subject:

Looks like some reddit users ran into the same issue I think...

https://www.reddit.com/r/Gentoo/comments/14cy9kv/xdgdesktopportal_slowing_gtk_apps_waaaaaay_down/
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CooSee · Veteran Joined: 20 Nov 2004 Posts: 1468 Location: Earth

there's a bug report:

https://bugs.gentoo.org/905265

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eccerr0r · Posted: Tue Jun 20, 2023 12:00 am Post subject:

at least I'm not out of my mind that I did something to cause it!
Well, other than not using Gnome with xdg-desktop-portal!
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CooSee · Veteran Joined: 20 Nov 2004 Posts: 1468 Location: Earth

i don't use gnome or xfce - never liked it, because it always annoyed me including lightdm <<< just my two cents :roll:

found something https://forum.manjaro.org/t/starting-any-program-became-very-slow/142495/2 - actual Bug https://gitlab.gnome.org/GNOME/xdg-desktop-portal-gnome/-/issues/74

hope this will help you somehow.

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" Die Realität ist eine Illusion, die durch Mangel an ehrlicher Kommunikation entsteht "
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" Der Mensch ist von Natur aus neugierig, was am Ende übrig bleibt ist die Gier "

figueroa · Posted: Tue Jun 20, 2023 1:58 am Post subject:

It isn't necessary to use LightDM with xfce. Any display manager can be used, or none.
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Andy Figueroa
hp pavilion hpe h8-1260t/2AB5; spinning rust x3
i7-2600 @ 3.40GHz; 16 gb; Radeon HD 7570
amd64/23.0/split-usr/desktop (stable), OpenRC, -systemd -pulseaudio -uefi

jwm224 · Posted: Tue Jul 09, 2024 8:03 pm Post subject:

I use BSPWM, and I added this line to .xinitrc file to get gvfs to work with thunar:

ck-launch-session dbus-launch thunar --daemon &

I believe this fixed the 20 second delay for me.
I know this is an old post, but I've had trouble finding a solution to using xdg-desktop-portal with thunar.
So, I hope this helps the next guy.