Screensharing on Sway / Pipewire / xdg-desktop-portal(-wlr)

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n3ph · Post by **n3ph** » Mon Jul 06, 2020 10:36 am

Hey folks!

I tried hard to get pipewire on sway working but I am stuck having only a black screen and a mouse cursor while sharing the screen.
Sway is started by systemd directly.

Code: Select all

emerge -vp sway pipewire xdg-desktop-portal xdg-desktop-portal-wlr

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   #] media-video/pipewire-0.3.6:0/0.3::gentoo  USE="X alsa bluetooth gstreamer pulseaudio systemd vulkan -debug -doc -ffmpeg -jack -test" 0 KiB
[ebuild   R   *] gui-wm/sway-9999::gentoo  USE="X man swaybar swaybg swayidle swaylock swaymsg swaynag systemd tray wallpapers (-elogind) -fish-completion -zsh-completion" 0 KiB
[ebuild   R   #] sys-apps/xdg-desktop-portal-1.7.2::gentoo [1.7.2::sorrow] USE="screencast -doc -geolocation" 0 KiB
[ebuild   R   ~] sys-apps/xdg-desktop-portal-wlr-0.1.0::sorrow  USE="systemd (-elogind)" 0 KiB

Total: 4 packages (4 reinstalls), Size of downloads: 0 KiB

$ cat .config/sway/env
XDG_CURRENT_DESKTOP=sway
MOZ_ENABLE_WAYLAND=1
RTC_USE_PIPEWIRE=true
XDG_SESSION_TYPE=wayland

$ systemctl --user status
● c3po
    State: running
     Jobs: 0 queued
   Failed: 0 units
    Since: Mon 2020-07-06 11:54:06 CEST; 24min ago
   CGroup: /user.slice/user-1000.slice/user@1000.service
           ├─init.scope
           │ ├─4518 /lib/systemd/systemd --user
           │ └─4519 (sd-pam)
           ├─pipewire.service
           │ ├─4525 /usr/bin/pipewire
           │ ├─4531 exec pipewire-media-session
           │ ├─4537 /usr/bin/pulseaudio --start --log-target=syslog
           │ └─4555 /usr/libexec/pulse/gsettings-helper
           └─dbus.service
             └─4529 /usr/bin/dbus-daemon --session --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only

Starting xdg-desktop-portal and xdg-desktop-portal-wlr by hand leads to a degraded state:

Code: Select all

$ systemctl --user start xdg-desktop-portal
$ systemctl --user start xdg-desktop-portal-wlr
$ systemctl --user status
● c3po
    State: degraded
     Jobs: 0 queued
   Failed: 1 units
    Since: Mon 2020-07-06 11:54:06 CEST; 28min ago
   CGroup: /user.slice/user-1000.slice/user@1000.service
           ├─xdg-permission-store.service
           │ └─14650 /usr/libexec/xdg-permission-store
           ├─xdg-desktop-portal.service
           │ └─15457 /usr/libexec/xdg-desktop-portal
           ├─init.scope
           │ ├─4518 /lib/systemd/systemd --user
           │ └─4519 (sd-pam)
           ├─xdg-desktop-portal-wlr.service
           │ └─15468 /usr/libexec/xdg-desktop-portal-wlr
           ├─pipewire.service
           │ ├─4525 /usr/bin/pipewire
           │ ├─4531 exec pipewire-media-session
           │ ├─4537 /usr/bin/pulseaudio --start --log-target=syslog
           │ └─4555 /usr/libexec/pulse/gsettings-helper
           └─dbus.service
             └─4529 /usr/bin/dbus-daemon --session --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only

Result is always the same. No matter if chromium (chrome://flags/#enable-webrtc-pipewire-capturer
enabled) or Mozilla Firefox or whatever...

A python script found here https://gitlab.gnome.org/snippets/19 works flawlessly..

Does anyone got this working?

n3ph · Post by **n3ph** » Tue Jul 21, 2020 5:11 pm

Got that working with Firefox as described here: https://github.com/emersion/xdg-desktop ... patibility

ATM I am testing the tumbleweed patch on a local repo with chromium 83.0.4103.116 - still compiling..

n3ph · Post by **n3ph** » Tue Jul 21, 2020 10:15 pm

chromium is also working with the tumbleweed patch!

https://build.opensuse.org/package/view ... -0.3.patch

Would be nice to see that included in the official ebuild...

n3ph · Post by **n3ph** » Wed Jul 22, 2020 7:06 pm

https://github.com/gentoo/gentoo/pull/16784