[Dell Inspiron 20 - 3064] [Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter] [168c:0042] The bluetooth detection is gone with kernel 4.10.0-38-generic on zesty

[Taihsiang Ho]

When testing proposed kernel of zesty Linux 201606-22459 4.10.0-38-generic #42-Ubuntu SMP Tue Oct 10 13:24:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

hciconfig did not output anything.

More information:

lspci -nn
......(skip)
03:00.0 Network controller [0280]: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter [168c:0042] (rev 31)
......(skip)

ubuntu@201606-22459:~$ lsmod | grep ath
ath10k_pci 45056 0
ath10k_core 348160 1 ath10k_pci
ath 28672 1 ath10k_core
mac80211 782336 1 ath10k_core
cfg80211 602112 3 mac80211,ath,ath10k_core

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: linux-image-4.10.0-38-generic 4.10.0-38.42
ProcVersionSignature: Ubuntu 4.10.0-38.42-generic 4.10.17
Uname: Linux 4.10.0-38-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.5
Architecture: amd64
Date: Tue Oct 24 23:02:24 2017
InstallationDate: Installed on 2017-10-24 (1 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-38-generic root=UUID=5959297f-2e3f-48a2-bd2f-5ed0caf54d65 ro rootdelay=60 quiet splash initcall_debug net.ifnames=0 vt.handoff=7
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.vendor: Dell Inc.
dmi.product.version: 1.0.1

[Taihsiang Ho (tai271828)]

duplicate https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1727148

[Taihsiang Ho (tai271828)]

Looks like this affects proposed kernel of xenial 4.4.0-98.121. Needs to confirm this later.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Daniel van Vugt (vanvugt)]

Ignore that comment #5. I thought you were on 16.04 but this is 17.04 so that's bluez 5.43 and kernel 4.10 has been there since the beginning.

[Taihsiang Ho (tai271828)]

Hi Daniel, thanks for your comments.

I noted this issue initially with proposed zesty (bluez 5.43-0ubuntu1.1 and 4.10.0-38-generic kernel), and filed this report on zesty with ubuntu-bug.

And then I recalled when I was playing around with proposed xenail (bluez 5.37-0ubuntu5.1 and 4.4.0-98.121 kernel) and it seems that I had the same issue. I need to go back to confirm my memory.

[Taihsiang Ho (tai271828)]

Tried with the previous kernels on zesty with the same stack. Still could not find bluetooth.

------------

ubuntu@201606-22459:~$ uname -a
Linux 201606-22459 4.10.0-19-generic #21-Ubuntu SMP Thu Apr 6 17:04:57 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
ubuntu@201606-22459:~$ hciconfig
ubuntu@201606-22459:~$ lsmod | grep ath
ath10k_pci 45056 0
ath10k_core 344064 1 ath10k_pci
ath 28672 1 ath10k_core
mac80211 782336 1 ath10k_core
cfg80211 602112 3 mac80211,ath,ath10k_core
ubuntu@201606-22459:~$ dpkg -l bluez
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-=============================================-===========================-===========================-===============================================================================================
ii bluez 5.43-0ubuntu1.1 amd64 Bluetooth tools and daemons
ubuntu@201606-22459:~$

[Daniel van Vugt (vanvugt)]

Are you saying it has never worked with any kernel?

[Daniel van Vugt (vanvugt)]

Otherwise, what was the last kernel that did work?

[Taihsiang Ho (tai271828)]

zesty + 4.10.0-35.39 kernel + bluez (5.43-0ubuntu1.1)
could not reproduce this issue according to history test records.

Maybe my hardware has issues. Checking.

[Taihsiang Ho (tai271828)]

After re-installing zesty twice, the BT is detectable. Should be a false alarm.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for bluez (Ubuntu) because there has been no activity for 60 days.]