Comment 68 for bug 1059872

Yep, as reported by others, upgrading to util-linux 2.25.2-4 in Ivan's ppa fixed the issue in 14.04.4 splendidly. Therefore, since as of 3 days ago 16.04 was giving me the same trouble, and Launchpad is showing util-linux 2.26.2 as default in 16.04, there must be a regression reintroducing this terrible bug in the newer util-linux, or there was something else wrong with the daily build of 4/16 that caused a similar symptomatic manifestation. As for 15.10, I'm seeing util-linux 2.25.2-4 as default, yet I encountered the same problem, and, in fact, had to fix my USB drive on my ancient Windows laptop before I could use it to downgrade to 14.04.4. Who but God knows why.