Comment 16 for bug 1414619

Thomas, if the card file system is corrupted or the SD card has hardware failure, no OS may be able to read it, and it would need to be reformatted or replaced respectively.

In your case, what would want to be investigated is what sequence of events specifically led up to the presumed corrupted SD card file system. Without at least a reproduction scenario, and which update(s) caused this issue if applicable, it is most difficult to analyze this problem.

Despite this, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1414619/comments/15 regarding this being fixed via reformatting the SD card. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.