Hello Christopher, This is still an issue with the latest mainline kernel (4.4-rc4) $ uname -a Linux cosmo 4.4.0-040400rc4-generic #201512061930 SMP Mon Dec 7 00:32:31 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
[ 1.248191] mmc0: tuning execution failed [ 1.248195] mmc0: error -5 whilst initialising SD card [ 1.680188] mmc0: tuning execution failed [ 1.680192] mmc0: error -5 whilst initialising SD card [ 2.120160] mmc0: tuning execution failed [ 2.120163] mmc0: error -5 whilst initialising SD card [ 2.564165] mmc0: tuning execution failed [ 2.564420] mmc0: error -5 whilst initialising SD card Thanks ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1523178 Title: 1217:8520 [Dell Latitude E7450] O2 Micro, SD/MMC Card Reader doesn't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1523178/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs