In my view this is not invalid: "differently correct" recorders and also printed DVDs are common in the wild and they work on Windows, osX and "dumb" readers. And as the average user is not able to figure out a workaround, he will assume that ubuntu is broken and switch to something else.
The same argument ("we are applying the permissions") was made in 2009 for bug #10550 and ubuntu decision back then was to change the mount options (possibly only to CDs/DVDs/Blueray, this is not clear from the bug). And let me stress again that this is indeed a regression: people used to be able to play their braindead DVDs and now they cannot. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to util-linux in Ubuntu. https://bugs.launchpad.net/bugs/1674164 Title: DVDs with restricted permissions are unreadable for normal user (regression?) Status in util-linux package in Ubuntu: Invalid Bug description: I'm using 16.10. I have a DVD with strange permissions for the root folder: michele@cassandra:~$ ls -l /media/michele total 2 d--x--x--- 3 michele michele 88 gen 1 2004 SONY_DVD_RECORDER_VOLUME The DVD is readable e.g. on windows but with ubuntu while I can access it as root: root@cassandra:~# ls -l /media/michele/SONY_DVD_RECORDER_VOLUME/ total 4 dr-xr-xr-x 2 michele michele 3628 gen 1 2004 VIDEO_TS I cannot as the non-root user that is logged in when I insert the disk: michele@cassandra:~$ ls -l /media/michele/SONY_DVD_RECORDER_VOLUME ls: cannot open directory '/media/michele/SONY_DVD_RECORDER_VOLUME': Permission denied Looking at the mount options it seems to me that this is a regression for bug #10550. The options used by udisks2 are: root@cassandra:~# mount |grep SONY /dev/sr0 on /media/michele/SONY_DVD_RECORDER_VOLUME type udf (ro,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8,uhelper=udisks2) while my understanding from bug #10550 is that I should have also mode=0777 and dmode=0777 And indeed this works: root@cassandra:~# mount -t udf -o ro,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8,uhelper=udisks2,mode=0777,dmode=0777 /dev/sr0 ~michele/z michele@cassandra:~$ ls -l ~michele/z total 4 drwxrwxrwx 2 michele michele 3628 gen 1 2004 VIDEO_TS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1674164/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp