Arch Linux

Yoppez

Member

Registered: 2021-09-10

Posts: 11

[SOLVED] Firefox slow first startup on Wayland

I tried to switch from Xorg to Wayland, and aside from some minor visual glitches that i managed to resolve, it seems to work well overall.

The problem is, when I reboot the machine and open Firefox for the first time during the session it takes about 25 - 30 second to open, which is kind of a nuisance, but if I close and re-run it it opens almost immediately.
When I switch back to Xorg, Firefox opens immediately even first time.

I already followed some suggestions from the Arch Wiki, including checking the configuration in /etc/host, open it in safe mode and refreshing it, but the problem remains.

Changing the environment variable to enable the Wayland mode doesn't solve either.

I use KDE Plasma as DE and proprietary NVIDIA drivers.

Last edited by Yoppez (2022-04-13 19:34:30)

Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 30,456

Website

Re: [SOLVED] Firefox slow first startup on Wayland

Changing the environment variable to enable the Wayland mode doesn't solve either.

How exactly did you do this?  And did you check the "Window protocol" listed in about:support before and after the change in the variable to confirm that firefox changed the protocol?

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"UNIX is simple and coherent" - Dennis Ritchie; "GNU's Not Unix" - Richard Stallman

Yoppez

Member

Registered: 2021-09-10

Posts: 11

Re: [SOLVED] Firefox slow first startup on Wayland

How exactly did you do this?

In the zprofile I export MOZ_ENABLE_WAYLAND=1

And did you check the "Window protocol" listed in about:support before and after the change in the variable to confirm that firefox changed the protocol?

Yes, when I change the variable and reboot, it says wayland instead of xwayland.

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 74,307

Re: [SOLVED] Firefox slow first startup on Wayland

it takes about 25 - 30 second to open

Ie. the dbus tiemout - that's probably no conincident. Run FF from an interactive shell and dbus-monitor in another one - should get you an idea which service times out (I'll just bet it's either pulseaudio or portal…)

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Yoppez

Member

Registered: 2021-09-10

Posts: 11

Re: [SOLVED] Firefox slow first startup on Wayland

@seth
Done, I don't understand very well how dbus-monitor works, but it doesn't seem that there is anything odd (like timeouts).

Here it is what dbus-monitor printed before and after opening Firefox:
https://pastebin.com/ZtbmS6qQ

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 74,307

Re: [SOLVED] Firefox slow first startup on Wayland

signal time=1649875612.204344 sender=org.freedesktop.DBus -> destination=:1.69 serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=NameAcquired
   string ":1.69"
method call time=1649875612.206574 sender=:1.69 -> destination=org.mozilla.firefox.ZGVmYXVsdC1yZWxlYXNl serial=2 path=/org/mozilla/firefox/Remote; interface=org.mozilla.firefox; member=OpenURL
   array of bytes [
      01 00 00 00 15 00 00 00 2f 68 6f 6d 65 2f 79 6f 70 70 65 7a 00 2f 75 73
      72 2f 6c 69 62 2f 66 69 72 65 66 6f 78 2f 66 69 72 65 66 6f 78 00
   ]
error time=1649875612.206605 sender=org.freedesktop.DBus -> destination=:1.69 error_name=org.freedesktop.DBus.Error.ServiceUnknown reply_serial=2
   string "The name org.mozilla.firefox.ZGVmYXVsdC1yZWxlYXNl was not provided by any .service files"
method call time=1649875612.379792 sender=:1.68 -> destination=org.freedesktop.DBus serial=14 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "type='signal',sender='org.freedesktop.portal.Desktop',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged',path='/org/freedesktop/portal/desktop',arg0='org.freedesktop.portal.Settings'"
method return time=1649875612.379816 sender=org.freedesktop.DBus -> destination=:1.68 serial=14 reply_serial=14
method call time=1649875612.379818 sender=:1.68 -> destination=org.freedesktop.DBus serial=15 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "type='signal',sender='org.freedesktop.portal.Desktop',interface='org.freedesktop.portal.Settings',path='/org/freedesktop/portal/desktop'"
method return time=1649875612.379820 sender=org.freedesktop.DBus -> destination=:1.68 serial=15 reply_serial=15

Then portal does it's thing.
Plot thickens.
Remove flatpak/xdg-portal* and see whether the problem remains.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Yoppez

Member

Registered: 2021-09-10

Posts: 11

Re: [SOLVED] Firefox slow first startup on Wayland

@seth
I did some tests and I found the culprit, and it is xdg-desktop-portal-gnome indeed, which it is an optional dependence and pretty useless for me so I just removed it.

Thanks a lot!

MikeZ

Member

Registered: 2017-10-28

Posts: 2

Re: [SOLVED] Firefox slow first startup on Wayland

@seth
I did some tests and I found the culprit, and it is xdg-desktop-portal-gnome indeed, which it is an optional dependence and pretty useless for me so I just removed it.

Thanks a lot!

resolved！