Hi Po-Hsu, Sorry to trouble you again, We need 1 more log,
Use Kernel 3.13.0-031300 and Cold boot to Linux; Then Warm boot to Linux Again. sudo su lspci -vxxxx -s 01:00.0 > o2dev_log4 lspci -vxxxx -s 00:1c.0 > rcdev_log4 Thanks -- 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] could not be detected after rebooting 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