Kdenlive cannot render any projects (stuck in "waiting...")

[ppd]

@ijohnson

Do you see any journal denials on your system when this happens? I don’t see this message on the terminal when I tried testing kdenlive last week by just doing snap run kdenlive

Nothing interesting:

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="dbus_method_call"  bus="session" path="/org/freedesktop/DBus" interface="org.freedesktop.DBus" member="ListNames" mask="send" name="org.freedesktop.DBus" pid=21594 label="snap.kdenlive.kdenlive" peer_label="unconfined"
DBus access

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="dbus_method_call"  bus="session" path="/org/a11y/bus" interface="org.freedesktop.DBus.Properties" member="Get" mask="send" name="org.a11y.Bus" pid=21594 label="snap.kdenlive.kdenlive" peer_pid=7265 peer_label="unconfined"
DBus access

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/libsystemd.so.0.28.0" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/libsystemd.so.0.28.0 (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/libwrap.so.0.7.6" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/libwrap.so.0.7.6 (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/libapparmor.so.1.6.1" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/libapparmor.so.1.6.1 (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/librt-2.31.so" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/librt-2.31.so (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/liblzma.so.5.2.4" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/liblzma.so.5.2.4 (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/liblz4.so.1.9.2" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/liblz4.so.1.9.2 (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/libgcrypt.so.20.2.5" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/libgcrypt.so.20.2.5 (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/libnsl-2.31.so" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/libnsl-2.31.so (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/libresolv-2.31.so" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/libresolv-2.31.so (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/snap/core20/1081/usr/lib/x86_64-linux-gnu/libgpg-error.so.0.28.0" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /snap/core20/1081/usr/lib/x86_64-linux-gnu/libgpg-error.so.0.28.0 (read)
Suggestion:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="open" profile="snap.kdenlive.kdenlive" name="/var/lib/snapd/hostfs/usr/lib/x86_64-linux-gnu/libOpenGL.so.0.0.0" pid=21600 comm="melt-7" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
File: /var/lib/snapd/hostfs/usr/lib/x86_64-linux-gnu/libOpenGL.so.0.0.0 (read)
Suggestions:
* adjust program to read necessary files from $SNAP, $SNAP_DATA, $SNAP_COMMON, $SNAP_USER_DATA or $SNAP_USER_COMMON
* adjust snap to use snap layouts (https://forum.snapcraft.io/t/snap-layouts/7207)

= AppArmor =
Time: Sep 29 09:55:54
Log: apparmor="DENIED" operation="dbus_method_call"  bus="session" path="/org/a11y/bus" interface="org.freedesktop.DBus.Properties" member="Get" mask="send" name="org.a11y.Bus" pid=21594 label="snap.kdenlive.kdenlive" peer_pid=7265 peer_label="unconfined"
DBus access

An interesting observation: For me, the videos get rendered just fine. It’s just that kdenlive does not get feedback from its renderer process. So that’s where we need to investigate. So probably dbus related: kdenlive/renderer/renderjob.cpp at a24b8fe294905cd2f6f562555ca5271d5bb936e8 · KDE/kdenlive · GitHub