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[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

I think the bug status for this is "Fix released" now.

** Changed in: linux (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1759821

Title:
  Dell XPS 13 9360 bluetooth scan can not detect any device

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  == SRU Justification ==
  This bug currently exists in the 4.4.0-118 -proposed kernel.  Due to this
  bug, a Dell XPS 13 9360 bluetooth scan can not detect any devices.

  This regression was caused by mainline commit fd865802c6.  This commit was reverted
  in mainline by the requested commit, 7d06d5895c15.  This commit was already 
  reverted in upstream stable 4.4.116 by commit: 356c942.  However, Xenial -proposed only 
  has up to the 4.4.114 stable updates.  This regression has been in the 4.4 kernel 
  since 4.4.110(Ubuntu 4.4.0-117).

  
  == Fix ==
  7d06d5895c15 ("Revert "Bluetooth: btusb: fix QCA Rome suspend/resume"")

  == Regression Potential ==
  Low.  This revert was also cc'd to upstream stable and is in the upstream 4.4.y
  kernel.  This revert should happen to prevent a regression from moving to -updates
  from -proposed.

  == Test Case ==
  A test kernel was built with this patch and tested by the original bug reporter.
  The bug reporter states the test kernel resolved the bug.



  Dell XPS 13 9360
  (CID 201606-22355)

  Image: OEM pre-installed image
  Kernel: 4.4.0-117-generic #141-Ubuntu SMP Tue Mar 13 11:58:07 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

  Click the bluetooth applet and try to add bt devices. The long
  scanning (> 5 mins) gets nothing.

  Reproducing rate: 100%

  [More Information]

  ubuntu@201606-22355:~$ lspci -nn
  00:00.0 Host bridge [0600]: Intel Corporation Device [8086:5904] (rev 02)
  00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:5916] (rev 02)
  00:04.0 Signal processing controller [1180]: Intel Corporation Skylake Processor Thermal Subsystem [8086:1903] (rev 02)
  00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f] (rev 21)
  00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Thermal subsystem [8086:9d31] (rev 21)
  00:15.0 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller [8086:9d60] (rev 21)
  00:15.1 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller [8086:9d61] (rev 21)
  00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-LP CSME HECI [8086:9d3a] (rev 21)
  00:1c.0 PCI bridge [0604]: Intel Corporation Device [8086:9d10] (rev f1)
  00:1c.4 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port [8086:9d14] (rev f1)
  00:1c.5 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port [8086:9d15] (rev f1)
  00:1d.0 PCI bridge [0604]: Intel Corporation Device [8086:9d18] (rev f1)
  00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:9d58] (rev 21)
  00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-LP PMC [8086:9d21] (rev 21)
  00:1f.3 Audio device [0403]: Intel Corporation Device [8086:9d71] (rev 21)
  00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-LP SMBus [8086:9d23] (rev 21)
  3a:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)
  3b:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
  3c:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd NVMe SSD Controller [144d:a802] (rev 01)
  ubuntu@201606-22355:~$ rfkill list
  0: hci0: Bluetooth
          Soft blocked: no
          Hard blocked: no
  1: phy0: Wireless LAN
          Soft blocked: no
          Hard blocked: no
  ubuntu@201606-22355:~$

  So far this issue affects the following machines at least:
    - Dell XPS 13 9360 (CID 201606-22338)
    - Dell XPS 13 9360 (CID 201606-22355)
    - Dell Precision 5520 (201610-25144)
    - Dell Inspiron 7560 (201606-22349)

  -------------------------------------------------

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-117-generic 4.4.0-117.141
  ProcVersionSignature: Ubuntu 4.4.0-117.141-generic 4.4.114
  Uname: Linux 4.4.0-117-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.15
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1723 F.... pulseaudio
  Date: Thu Mar 29 18:39:27 2018
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-xenial-amd64-20160624-2
  HibernationDevice: RESUME=UUID=e30b2dfe-7ba1-4cde-876a-928e9bbb077b
  InstallationDate: Installed on 2018-03-23 (6 days ago)
  InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
  MachineType: Dell Inc. XPS 13 9360
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-117-generic.efi.signed root=UUID=488684c8-a47f-46bc-b84d-ad4bff229ccd ro automatic-oem-config quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-117-generic N/A
   linux-backports-modules-4.4.0-117-generic  N/A
   linux-firmware                             1.157.17
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/21/2017
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 2.4.2
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr2.4.2:bd11/21/2017:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9360
  dmi.sys.vendor: Dell Inc.

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