Sorry, Po-Hsu, could you please attach the dmesg log after rebooting(3.13.0-031300) too? I hadn't made myself clear, the point to test v3.13-trusty is to check if the device always shows up with that kernel.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1346067 Title: [Dell Latitude E5440] O2 Card reader [1217:8520] is not stable on this system To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1346067/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs