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crocme10

Member

Registered: 2022-01-11

Posts: 3

Bluetooth not working / Reading QCA version information failed (-110)

Hello,

My bluetooth headphones stopped working a month or two ago.

The proximate cause seems to be that the bluetooth controller is not available:

bluetoothctl power on
No default controller available

Digging a bit, I see this line in the logs:

Bluetooth: hci0: Reading QCA version information failed (-110) 

Hardware: (Dell XPS)

lspci -nnk
04:00.0 Network controller [0280]: Qualcomm Technologies, Inc QCA6390 Wireless Network Adapter [17cb:1101] (rev 01)
        Subsystem: Rivet Networks Device [1a56:a501]
        Kernel driver in use: ath11k_pci
        Kernel modules: ath11k_pci

lsmod | grep -i blue
bluetooth            1077248  17 btrtl,btmtk,btqca,btintel,hci_uart,btbcm,bnep,btusb
ecdh_generic           16384  1 bluetooth
rfkill                 40960  5 bluetooth,dell_laptop,cfg80211
crc16                  16384  2 bluetooth,ext4

lsmod | grep -i ath11k
ath11k_pci             28672  0
ath11k                741376  1 ath11k_pci
qmi_helpers            36864  1 ath11k
mac80211             1490944  1 ath11k
cfg80211             1277952  2 ath11k,mac80211
mhi                   114688  2 ath11k_pci,qrtr_mhi

I've tried removing and reloading all bluetooth related modules, but to no avail.

Note that the QCA6390 is a Wi-Fi 6 and Bluetooth 5.1 Wireless SoC. I have no problem with the wifi. The problem with the bluetooth occurs independently of the use of wifi.

I'd welcome any suggestion, thank you.

crocme10

Member

Registered: 2022-01-11

Posts: 3

Re: Bluetooth not working / Reading QCA version information failed (-110)

The answer to the question I asked is probably the same as the one for
Bluetoothctl not detecting any bluetooth controllers

Last edited by crocme10 (2023-03-23 14:11:43)