My new Ubuntu 18.04 system also having this issue. I am using Wireless
Dual-Band Bluetooth(Intel 8260) PCI-E card from Asus(PCE-AC55BT). No
issues with the wifi, but the bluetooth conrol tools fail to discover
devices:
$ cat /proc/cpuinfo | grep -m1 'model name'
model name : AMD Ryzen 7 1700
My problem was related to a faulty Bluetooth device. Sorry about the
noise, please disregard. Thanks!
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https://bugs.launchpad.net/bugs/1748565
Title:
Bluetooth: hci0: last event is not
$ lsb_release -rd
Description:Ubuntu Bionic Beaver (development branch)
This is also showing up with the dev branch 14.10(utopic unicorn):
Aug 12 09:45:32 utopic wpa_supplicant[1704]: wlan0: CTRL-EVENT-SCAN-STARTED
Aug 12 09:43:38 utopic wpa_supplicant[1704]: nl80211:
send_and_recv->nl_recvmsgs failed: -33
$ lspci | grep Network
02:00.0 Network controller: Intel Co
