There are multiple cause to this bug. However, patch in attachement may for bug described by Dan Parslow.
It is result of a bisect between a working kernel 3.14 and a non working kernel 3.17. ** Patch added: "0001-Revert-mmc-sdhci-add-DDR50-1.8V-mode-support-for-Bay.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1422338/+attachment/4424378/+files/0001-Revert-mmc-sdhci-add-DDR50-1.8V-mode-support-for-Bay.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1422338 Title: I/O errors on mmc partitions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1422338/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs