В браузерах под wayland не работает screencast.
в логах dbus:
method call time=1675066147.606737 sender=:1.388 -> destination=:1.5 serial=30 path=/org/freedesktop/portal/desktop; interface=org.freedesktop.portal.ScreenCast; member=CreateSession
   array [
      dict entry(
         string "session_handle_token"
         variant             string "webrtc_session1074249714"
      )
      dict entry(
         string "handle_token"
         variant             string "webrtc_1951900495"
      )
   ]

method call time=1675066147.608043 sender=:1.5 -> destination=org.freedesktop.DBus serial=8363 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "type='signal',sender='org.freedesktop.impl.portal.desktop.kde',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged',path='/org/freedesktop/portal/desktop/reques
t/1_388/webrtc_1951900495',arg0='org.freedesktop.impl.portal.Request'"
method return time=1675066147.608113 sender=org.freedesktop.DBus -> destination=:1.5 serial=349 reply_serial=8363
method call time=1675066147.608267 sender=:1.5 -> destination=org.freedesktop.DBus serial=8364 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch
   string "type='signal',sender='org.freedesktop.impl.portal.desktop.kde',interface='org.freedesktop.impl.portal.Request',path='/org/freedesktop/portal/desktop/request/1_388/webrtc_19519004
95'"
method return time=1675066147.608356 sender=org.freedesktop.DBus -> destination=:1.5 serial=350 reply_serial=8364
method call time=1675066147.608380 sender=:1.5 -> destination=org.freedesktop.DBus serial=8365 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=StartServiceByName
   string "org.freedesktop.impl.portal.desktop.kde"
   uint32 0
method return time=1675066147.608418 sender=org.freedesktop.DBus -> destination=:1.5 serial=351 reply_serial=8365
   uint32 2
method call time=1675066147.609191 sender=:1.5 -> destination=org.freedesktop.DBus serial=8366 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=GetNameOwner
   string "org.freedesktop.impl.portal.desktop.kde"
method return time=1675066147.609250 sender=org.freedesktop.DBus -> destination=:1.5 serial=352 reply_serial=8366
   string ":1.20"
method call time=1675066147.609826 sender=:1.5 -> destination=:1.20 serial=8367 path=/org/freedesktop/portal/desktop/request/1_388/webrtc_1951900495; interface=org.freedesktop.DBus.Properties; member=GetAll
   string "org.freedesktop.impl.portal.Request"
error time=1675066147.610216 sender=:1.20 -> destination=:1.5 error_name=org.freedesktop.DBus.Error.UnknownObject reply_serial=8367
   string "No such object path '/org/freedesktop/portal/desktop/request/1_388/webrtc_1951900495'"