Transmission-daemon failed after upgrade from 25.04 to 25.10

[yt9328]

1. transmission-daemon was started successfully, and able to add torrents by transmission-remote

2. It failed to create directory/file in “download directory”. Directory is with correct owner and permission.
   log: kernel: audit: type=1400 audit(1758382084.240:605): apparmor=“DENIED” operation=“mkdir” class=“file” profile=“transmission-daemon” name= xxx pid=7740 comm=“transmission-da” requested_mask=“c” denied_mask=“c” fsuid=106 ouid=106

3. Web interface failed with 404 due to file read failure: “/usr/share/transmission/public_html/index.html”
   log: kernel: audit: type=1400 audit(1758378264.945:316): apparmor=“DENIED” operation=“open” class=“file” profile=“transmission-daemon” name=“/usr/share/transmission/public_html/index.html” pid=1563 comm=“transmission-da” requested_mask=“r” denied_mask=“r” fsuid=106 ouid=106

[tea-for-one]

I changed the category to Pre-Release Discussion as it’s a more appropriate location for this issue

[rubi1200]

Welcome to Ubuntu Discourse

25.10 is still in development, currently beta, and so issues are to be expected.

If you run sudo apt update && sudo apt full-upgrade do the errors continue?

If yes please post the terminal output here so we can look at it.

You might also consider filing a bug report to bring this to the attention of the maintainers.

[yt9328]

Thanks,

1. Tried " sudo apt update && sudo apt full-upgrade", no luck
2. Changed “download directory” to “/var/lib/transmission-daemon/downloads”. It works, files are created successfully. Web interface still failed.
   It looks like file access been jailed in debian-transmission’s home directory. Since it is in root filesystem and size is limited, I would like to change the “download directory” to another partition. Also, web interface failure may be caused by same reason: “/usr/share/transmission/public_html/index.html” is not in home directory of debian-transmission.
   Any suggestion? thanks