Comment 82 for bug 1021375

It occurred for me yesterday for the first time ever. I have Dell XPS netbook running 64bit 16.04, upgraded from 14.04. Been using Ubuntu for many many years on many machines, never seen this before.

Symptoms: With one of my thumb-drives, I could copy/move files in terminal without any problems, but Nautilus complained about the drive being read-only. Interestingly, using Nautilus, I could still delete files I copied using terminal. Today the bug doesn't occur with the same thumb-drive.

Thumb drive is not brand new (1~2 years old), but there are no problems with it as far as I can see.

Between yesterday and today: I didn't shut down the system on which bug showed up, however I suspended it. Also, I used the drive with other Ubuntu machine.

nautilus --version
GNOME nautilus 3.14.3

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial

Any recommended steps to be taken (to gather more data) if I ever see this again?