Richard - you could try installing linux-oem-5.10. There are a few bug fixes between v5.4 and v5.10 releases.
sudo apt-get install linux-oem-5.10 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891768 Title: hfs+ filesystems fail reading / writing large files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891768/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs