I don't know what anybody did to resolve this issue... at least for me it still exists.
mmc0: Unknown controller version (3). You may experience problems. mmc0: Hardware doesn't specify timeout clock frequency. lspci shows following controller: 02:00.0 SD Host controller: O2 Micro, Inc. Device 8520 (rev 01) I am running ubuntu 13.10 on a Thinkpad W540 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/802084 Title: 1217:7130 O2 Micro, Inc. Integrated MS/xD Controller (rev 01) Media Slot does not read cards To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/802084/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs