Bluetooth doesn't work on the Dell XPS 15 laptop, with Ubuntu 18.04.
expected behavior:
in Settings, one goes to the Bluetooth tab, slides the 'ON' button to 'ON', and then Bluetooth is enabled, and one can pair devices
what is happening:
in Settings, when clicking on the 'ON' button in the Bluetooth tab, it seems to turn on, that falls back to off
some relevant output:
$ uname -a; lspci -nnk | grep -iA2 net; lsusb; dmesg | grep -i bluetooth; dmesg | grep -i firmware; lsmod | grep bluetoothLinux
Linux dell-xps15 4.15.0-23-generic #25-Ubuntu SMP Wed May 23 18:02:16 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
02:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)
Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network Adapter [1a56:1535]
Kernel driver in use: ath10k_pci
Kernel modules: ath10k_pci
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 138a:0091 Validity Sensors, Inc.
Bus 001 Device 003: ID 0cf3:e300 Atheros Communications, Inc.
Bus 001 Device 005: ID 0c45:6713 Microdia
Bus 001 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[ 3.905518] Bluetooth: Core ver 2.22
[ 3.905532] Bluetooth: HCI device and connection manager initialized
[ 3.905534] Bluetooth: HCI socket layer initialized
[ 3.905536] Bluetooth: L2CAP socket layer initialized
[ 3.905539] Bluetooth: SCO socket layer initialized
[ 0.028000] Spectre V2 : Enabling Restricted Speculation for firmware calls
[ 0.068684] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[ 1.460567] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_01.bin (v1.1)
[ 3.857792] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/pre-cal-pci-0000:02:00.0.bin failed with error -2
[ 3.857799] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/cal-pci-0000:02:00.0.bin failed with error -2
[ 3.860582] ath10k_pci 0000:02:00.0: firmware ver WLAN.RM.4.4.1-00079-QCARMSWPZ-1 api 6 features wowlan,ignore-otp crc32 fd869beb
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: am 5501 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=2e64cf71-cb2d-491f-b8cd-fef8c3aeb582
InstallationDate: Installed on 2017-10-23 (272 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
MachineType: Dell Inc. XPS 15 9560
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-23-generic root=UUID=a991df19-cc0a-4108-b718-c90ef7113f52 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-23-generic N/A
linux-backports-modules-4.15.0-23-generic N/A
linux-firmware 1.173.1
Tags: bionic
Uname: Linux 4.15.0-23-generic x86_64
UpgradeStatus: Upgraded to bionic on 2018-06-20 (32 days ago)
UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 04/23/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.9.4
dmi.board.name: 05FFDN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.9.4:bd04/23/2018:svnDellInc.:pnXPS159560:pvr:rvnDellInc.:rn05FFDN:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 15 9560
dmi.sys.vendor: Dell Inc.
Please run this command to send us more information about the system:
apport-collect 1782893