Public bug reported: ubuntu azure seems not support binder FS.
$ uname -r 5.8.0-1026-azure $ sudo modprobe binder_linux $ mkdir ./tbinder $ sudo mount -t binder binder ./tbinder mount: /tbinder: unknown filesystem type 'binder'. $ cat /proc/filesystems | grep binder Another generic server working properly. $ uname -r 5.4.0-45-generic $ sudo modprobe binder_linux $ mkdir ./tbinder $ sudo mount -t binder binder ./tbinder $ cat /proc/filesystems | grep binder nodev binder $ cd tbinder/ $ ls -al total 4 drwxr-xr-x 2 root root 0 3월 31 11:14 . crw------- 1 root root 240, 0 3월 31 11:14 binder-control ** Affects: linux-azure (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921976 Title: Can't create additional binder devices the user needs to specify them To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1921976/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs