These patches are mentioned in an email thread by Adrian Hunter (one of the primary maintainers of the MMC module in the kernel). I will do some check for these patches. Before I confirm which patches are needed, I set this issue incomplete temporarily. This issue was reported also existed in Ubuntu 15.10, however I tested the mainline kernel v4.5 and it works fine.
** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1559870 Title: mmc_select_hs400 failed, error -74 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559870/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs