Bluetooth does not work

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arsenide
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Level 1
Posts: 1
Joined: Sun Aug 12, 2018 9:42 pm

Bluetooth does not work

Post by arsenide » Sun Aug 12, 2018 10:00 pm

Hi all,

My bluetooth stopped working all of a sudden. I was using my bluetooth paired device flawlessly until a few hours ago, at which time both the WiFi and the Bluetooth stopped working all of a sudden. No new packages installed, no manual or automated updates, either. I managed to recover the WiFi just with a reboot, but not the bluetooth. Here are some specifics about my setup, any help would be appreciated.

Linux Mint 19 on an Acer Aspire. Based on what I read elsewhere, I attempted to reinstall blueman, bluemon and bluez to no avail.

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 rfkill
 ID TYPE      DEVICE              SOFT      HARD
 0 wlan      acer-wireless  unblocked unblocked
 1 bluetooth acer-bluetooth unblocked unblocked
 2 wlan      phy0           unblocked unblocked
 
Bluetooth still appears to be running, but when I open the GUI, it keeps searching for devices forever:

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 sudo systemctl status bluetooth
   bluetooth.service - Bluetooth service
   Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor pres
   Active: active (running) since Sun 2018-08-12 21:33:46 EDT; 2s ago
     Docs: man:bluetoothd(8)
 Main PID: 3006 (bluetoothd)
   Status: "Running"
    Tasks: 1 (limit: 4915)
   CGroup: /system.slice/bluetooth.service
           └─3006 /usr/lib/bluetooth/bluetoothd

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 echo "scan on" | bluetoothctl
[bluetooth]# scan ono bluetoothd...
No default controller available
Agent registered
Agent unregistered

According to error logs, there might be some problems with my firmwares, though I do not understand why since the very same laptop used to work without any such issues and I did not make any kernel updates, nor firmware changes. Is this "error -2" the root cause, or is it irrelevant?

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 dmesg | egrep -i 'blue|firm'
[    0.042220] [Firmware Info]: CPU: Re-enabling disabled Topology Extensions Support.
[    0.076123] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[    0.088088] acpi PNP0A08:00: [Firmware Info]: MMCONFIG for domain 0000 [bus 00-3f] only partially covers this bridge
[    1.265464] [drm] Found UVD firmware Version: 1.87 Family ID: 11
[    1.266261] [drm] Found VCE firmware Version: 52.4 Binary ID: 3
[    6.452430] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/pre-cal-pci-0000:02:00.0.bin failed with error -2
[    6.452449] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/cal-pci-0000:02:00.0.bin failed with error -2
[    6.454375] ath10k_pci 0000:02:00.0: Direct firmware load for ath10k/QCA9377/hw1.0/firmware-6.bin failed with error -2
[    6.460878] ath10k_pci 0000:02:00.0: firmware ver WLAN.TF.1.0-00002-QCATFSWPZ-5 api 5 features ignore-otp crc32 c3e0d04f
[  131.359945] Bluetooth: Core ver 2.22
[  131.360018] Bluetooth: HCI device and connection manager initialized
[  131.360030] Bluetooth: HCI socket layer initialized
[  131.360037] Bluetooth: L2CAP socket layer initialized
[  131.360051] Bluetooth: SCO socket layer initialized
[  321.541435] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[  321.541437] Bluetooth: BNEP filters: protocol multicast
[  321.541443] Bluetooth: BNEP socket layer initialized

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