Po-Hsu Lin, as per your https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1192411/+attachment/3707011/+files/BootDmesg.txt : [ 0.191389] mtrr: your CPUs had inconsistent variable MTRR settings [ 0.191391] mtrr: probably your BIOS does not setup all CPUs. ... [ 0.436327] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
Hence, as per http://www.dell.com/support/drivers/us/en/19/product/inspiron-14r-5420 an update is available for your BIOS (A19). If you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything? If it doesn't, could you please both specify what happened, and just provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date Thank you for your understanding. ** Tags removed: bios-outdated-a17 ** Tags added: bios-outdated-a19 ** Summary changed: - [Dell Inspiron 5420] Bluetooth indicator disappeared after wakeup form suspend / hibenate + [Dell Inspiron 14R 5420] Bluetooth indicator disappeared after wakeup form suspend / hibenate ** 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/1192411 Title: [Dell Inspiron 14R 5420] Bluetooth indicator disappeared after wakeup form suspend / hibenate To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1192411/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
