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[Max Schwarz <1277528@xxxxxxxxxxxxxxxxxx>]

I also work with an ASUS n550jv.

It's possible that this problem is caused by /etc/init/rfkill-
restore.conf. I noticed that ath3k was complaining about a failed
firmware download right after that script is run.

This is my theory on what is happening: ath3k starts the firmware
download. rfkill-restore decides to (for some reason) block/unblock the
asus-bluetooth rfkill. This disrupts the firmware download, and the
device is in an unrecoverable state.

Since disabling the rfkill-restore.conf via
echo "manual" | sudo tee /etc/init/rfkill-restore.override
the problem has not occured for over 10 reboots. I had one issue (fw download failed with a different message) after a forced shutdown (holding the power button), but one reboot later everything was okay.

That's no guarantee, but maybe this helps.

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https://bugs.launchpad.net/bugs/1277528

Title:
  [Asus N550JV] Bluetooth not working initially

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Initially bluetooth doesn't work. "rfkill list" either shows bluetooth
  is soft blocked, or unblocked. If it boots unblocked, it does not
  work.

  WORKAROUND: Only if it is soft blocked "sudo rfkill unblock bluetooth"
  and I was able to pair a bluetooth mouse and the connection was
  persistent (not sporadic). I even tried this; I paired a tablet and
  streamed audio from tablet to my laptop.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-7-generic 3.13.0-7.25
  ProcVersionSignature: Ubuntu 3.13.0-7.25-generic 3.13.1
  Uname: Linux 3.13.0-7-generic x86_64
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     2609 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     2609 F.... pulseaudio
  CasperVersion: 1.337
  CurrentDesktop: Unity
  Date: Fri Feb  7 16:12:13 2014
  LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140205)
  MachineType: ASUSTeK COMPUTER INC. N550JV
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash --
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-7-generic N/A
   linux-backports-modules-3.13.0-7-generic  N/A
   linux-firmware                            1.123
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/17/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N550JV.207
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N550JV
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN550JV.207:bd09/17/2013:svnASUSTeKCOMPUTERINC.:pnN550JV:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN550JV:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: N550JV
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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