I used to get the following error after each reboot. That started
happening after the most recent Ubuntu 20.04 update.
Bluetooth: hci0: command 0xfc05 tx timeout
Bluetooth: hci0: Reading Intel version command failed (-110)
I verified that the following workaround works for me. Thankfully, it
does not involve pulling out the power plug.
First verify that your device is reported as DOWN.
~ $ hciconfig
hci0: Type: Primary Bus: USB
BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:0 acl:0 sco:0 events:0 errors:0
TX bytes:4 acl:0 sco:0 commands:1 errors:0
If so, run the following command:
~ $ sudo hciconfig -a hci0 up
and then reboot normally. I was able to use Bluetooth normally after
that step.
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1859592
Title:
Bluetooth unavailable after updates - Reading Intel version
information failed (-110)
Status in linux package in Ubuntu:
Confirmed
Bug description:
After 10 days of uptime with automatic updates, I rebooted. Bluetooth,
which I use every day, is no longer available.
$ dmesg | grep -i bluetooth
[ 4.846072] Bluetooth: Core ver 2.22
[ 4.846088] Bluetooth: HCI device and connection manager initialized
[ 4.846092] Bluetooth: HCI socket layer initialized
[ 4.846094] Bluetooth: L2CAP socket layer initialized
[ 4.846096] Bluetooth: SCO socket layer initialized
[ 5.434081] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 5.434082] Bluetooth: BNEP filters: protocol multicast
[ 5.434086] Bluetooth: BNEP socket layer initialized
[ 6.874125] Bluetooth: hci0: command 0xfc05 tx timeout
[ 6.874129] Bluetooth: hci0: Reading Intel version information failed
(-110)
$ uname -a
Linux abu 5.3.2-050302-generic #201910010731 SMP Tue Oct 1 07:33:48 UTC 2019
x86_64 x86_64 x86_64 GNU/Linux
AMD Ryzen 5 3400G (Picasso, Raven Ridge) (Asrock A300) Ubuntu 18.04
LTS.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1859592/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
