Can't unmount external disk after playing video using Clapper

[frnmz]

As the title says, after playing video with Clapper, unmounting external disk will result to error: "Volume is busy".
Even after the Clapper process is gone from system monitor and from flatpak ps.
lsof | grep resulting to xdg-document-portal is the process that keeping the disk busy by opening file that just opened by Clapper:

lsof | grep /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee
xdg-docum 4104                            lam   21u      REG               0,72 2856144411       3578 /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee/Anime HQ/A whisker away/A Whisker Away.mkv
xdg-docum 4104 4105 gmain                 lam   21u      REG               0,72 2856144411       3578 /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee/Anime HQ/A whisker away/A Whisker Away.mkv
xdg-docum 4104 4106 gdbus                 lam   21u      REG               0,72 2856144411       3578 /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee/Anime HQ/A whisker away/A Whisker Away.mkv
xdg-docum 4104 4110 fuse\x20m             lam   21u      REG               0,72 2856144411       3578 /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee/Anime HQ/A whisker away/A Whisker Away.mkv
xdg-docum 4104 4111 fuse\x20m             lam   21u      REG               0,72 2856144411       3578 /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee/Anime HQ/A whisker away/A Whisker Away.mkv
xdg-docum 4104 4112 fuse\x20m             lam   21u      REG               0,72 2856144411       3578 /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee/Anime HQ/A whisker away/A Whisker Away.mkv
xdg-docum 4104 4113 fuse\x20m             lam   21u      REG               0,72 2856144411       3578 /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee/Anime HQ/A whisker away/A Whisker Away.mkv
xdg-docum 4104 8858 pool-/usr             lam   21u      REG               0,72 2856144411       3578 /run/media/lam/3f285e72-9d65-46a8-a57e-a88530e518ee/Anime HQ/A whisker away/A Whisker Away.mkv

Killing xdg-document-portal process solves the problem.

[Rafostar]

Please check if example player from GTK4 demos also reproduces this issue:

flatpak run --command=sh com.github.rafostar.Clapper
gtk4-demo --run=video_player

[frnmz]

Please check if example player from GTK4 demos also reproduces this issue:

Yup the problem can be reproduced using gtk4-demo.

Also I think it's a flatpak problem, see: flatpak/xdg-desktop-portal#689

[Rafostar]

If the problem is reproduce-able with gtk4-demo, then its something happening somewhere upstream (not in Clapper). It seems like you have found the real culprit in that flatpak issue you linked above, so this can be closed then.

[Rafostar]

@frnmz

Until solved upstream, this can be used to give flatpak full permission (without using portals, thus working around that portal bug) to /run/media directory:

flatpak override com.github.rafostar.Clapper --filesystem=/run/media

This also makes D&D work from removable devices without waiting for GTK4 port of Nautilus file manager.

[frnmz]

Until solved upstream, this can be used to give flatpak full permission (without using portals, thus working around that portal bug) to /run/media directory:

It does solves the problem.
If there were a fix on portals, how do I revert the change made by this?

[Rafostar]

If there were a fix on portals, how do I revert the change made by this?

flatpak override --reset com.github.rafostar.Clapper