Ubuntu 19.04 (disco) will switch to read-only when a automatically mounted VFAT filesystem with errors is detected.
You have to umount the filesystem and then run "sudo fsck.vfat /dev/sdxxxx" multiple times, until fsck.vfat do no more ask to correct the new errors detected in the filesystem.
Maybe fsck.vfat should be modified so that after the question "Perform changes ? (y/n) y" it asks for "Re-check filesystem ? (y/n)" because its behaviour is confusing...
Ubuntu 19.04 (disco) will switch to read-only when a automatically mounted VFAT filesystem with errors is detected.
You have to umount the filesystem and then run "sudo fsck.vfat /dev/sdxxxx" multiple times, until fsck.vfat do no more ask to correct the new errors detected in the filesystem.
Maybe fsck.vfat should be modified so that after the question "Perform changes ? (y/n) y" it asks for "Re-check filesystem ? (y/n)" because its behaviour is confusing...