Same here and as addition to the image with errors above I've attached some other errors I actually captured. In my case, I had to disable discard command in /etc/fstab because system wasn't able to boot anymore.
** Attachment added: "Samsung EVO 840 EXT0DB6Q discard errors" https://bugs.launchpad.net/ubuntu/+source/fstrim/+bug/1449005/+attachment/4387106/+files/IMG_20150428_214710.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1449005 Title: trim does not work with Samsung 840 EVO after firmware update (EXT0DB6Q) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fstrim/+bug/1449005/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs