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Date: Thu, 4 Apr 2024 12:14:46 -0700
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From: Wren Turkal <wt@penguintechs.org>
Subject: QCA6390 bluetooth doesn't work after warm boot or disable/reenable
To: ath11k@lists.infradead.org, linux-bluetooth@vger.kernel.org
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Hey there ath11k/bluetooth folks,

I am having a pretty major problem with QCA6930 for some time (maybe a 
year or two). I have this bluetooth device:

72:00.0 Unassigned class [ff00]: Qualcomm Technologies, Inc QCA6390 
Wireless Network Adapter

This device appears to be driven by the ath11k module and others. I hope 
I am pinging the right lists.

I am using Fedora Rawhide. Fully updated yesterday. My uname reports this:

Linux braindead.localdomain 
6.9.0-0.rc2.20240402git026e680b0a08.24.fc41.x86_64 #1 SMP 
PREEMPT_DYNAMIC Tue Apr  2 17:51:18 UTC 2024 x86_64 GNU/Linux

My main bluetooth device is  a Logitech MX 3 Mac mouse that uses 
bluetooth. When bluetooth fails, so does the mouse. I have power cycle 
my laptop when that happens. I'd love to help find a fix for this.

The problem is that I cannot disable and re-enable the bluetooth on my 
system. Bluetooth also doesn't work after a warm boot. I have to power 
cycle my laptop to recover bluetooth funcitonality. I have tried the 
following:

* logging into KDE Plasma (bluetooth stops working)
* logging into GNOME (works on cold boot, fails on warm boot)

After logging into GNOME during a cold boot, I have also done "systemctl 
restart bluetooth.service". I get these journal logs during the stop;

➜  bt_kernel_bug cat journal-stop-bluetooth-service.log
Apr 04 10:14:41 braindead.localdomain NetworkManager[1120]: <info> 
[1712250881.7060] device (F0:5C:77:F2:60:FC): state change: disconnected 
-> unmanaged (reason 'removed', sys-iface-state: 'removed')
Apr 04 10:14:41 braindead.localdomain systemd[1]: Starting 
systemd-rfkill.service - Load/Save RF Kill Switch Status...
Apr 04 10:14:41 braindead.localdomain systemd[1]: Started 
systemd-rfkill.service - Load/Save RF Kill Switch Status.
Apr 04 10:14:41 braindead.localdomain audit[1]: SERVICE_START pid=1 
uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 
msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" 
hostname=? addr=? terminal=? res=success'
Apr 04 10:14:46 braindead.localdomain systemd[1]: 
systemd-rfkill.service: Deactivated successfully.
Apr 04 10:14:46 braindead.localdomain audit[1]: SERVICE_STOP pid=1 uid=0 
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 
msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" 
hostname=? addr=? terminal=? res=success'

I get these journal logs during start:

Apr 04 10:15:05 braindead.localdomain kernel: Bluetooth: hci0: setting 
up ROME/QCA6390
Apr 04 10:15:05 braindead.localdomain systemd[1]: Starting 
systemd-rfkill.service - Load/Save RF Kill Switch Status...
Apr 04 10:15:05 braindead.localdomain systemd[1]: Started 
systemd-rfkill.service - Load/Save RF Kill Switch Status.
Apr 04 10:15:05 braindead.localdomain audit[1]: SERVICE_START pid=1 
uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 
msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" 
hostname=? addr=? terminal=? res=success'
Apr 04 10:15:05 braindead.localdomain kernel: Bluetooth: hci0: QCA 
Product ID   :0x00000010
Apr 04 10:15:05 braindead.localdomain kernel: Bluetooth: hci0: QCA SOC 
Version  :0x400a0200
Apr 04 10:15:05 braindead.localdomain kernel: Bluetooth: hci0: QCA ROM 
Version  :0x00000200
Apr 04 10:15:05 braindead.localdomain kernel: Bluetooth: hci0: QCA Patch 
Version:0x00003ac0
Apr 04 10:15:05 braindead.localdomain kernel: Bluetooth: hci0: QCA 
controller version 0x02000200
Apr 04 10:15:05 braindead.localdomain kernel: Bluetooth: hci0: QCA 
Downloading qca/htbtfw20.tlv
Apr 04 10:15:06 braindead.localdomain kernel: Bluetooth: hci0: QCA 
Failed to send TLV segment (-110)
Apr 04 10:15:06 braindead.localdomain kernel: Bluetooth: hci0: QCA 
Failed to download patch (-110)
Apr 04 10:15:06 braindead.localdomain kernel: Bluetooth: hci0: Retry BT 
power ON:0
Apr 04 10:15:08 braindead.localdomain kernel: Bluetooth: hci0: command 
0xfc00 tx timeout
Apr 04 10:15:08 braindead.localdomain kernel: Bluetooth: hci0: Reading 
QCA version information failed (-110)
Apr 04 10:15:08 braindead.localdomain kernel: Bluetooth: hci0: Retry BT 
power ON:1
Apr 04 10:15:10 braindead.localdomain systemd[1]: 
systemd-rfkill.service: Deactivated successfully.
Apr 04 10:15:10 braindead.localdomain audit[1]: SERVICE_STOP pid=1 uid=0 
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 
msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" 
hostname=? addr=? terminal=? res=success'
Apr 04 10:15:10 braindead.localdomain kernel: Bluetooth: hci0: command 
0xfc00 tx timeout
Apr 04 10:15:10 braindead.localdomain kernel: Bluetooth: hci0: Reading 
QCA version information failed (-110)
Apr 04 10:15:10 braindead.localdomain kernel: Bluetooth: hci0: Retry BT 
power ON:2
Apr 04 10:15:13 braindead.localdomain bluetoothd[986]: Failed to set 
mode: Authentication Failed (0x05)
Apr 04 10:15:13 braindead.localdomain kernel: Bluetooth: hci0: command 
0xfc00 tx timeout
Apr 04 10:15:13 braindead.localdomain kernel: Bluetooth: hci0: Reading 
QCA version information failed (-110)
Apr 04 10:15:15 braindead.localdomain chronyd[1065]: Selected source 
204.17.205.8 (2.fedora.pool.ntp.org)
Apr 04 10:15:22 braindead.localdomain systemd[1687]: Created slice 
background.slice - User Background Tasks Slice.
Apr 04 10:15:22 braindead.localdomain systemd[1687]: Starting 
systemd-tmpfiles-clean.service - Cleanup of User's Temporary Files and 
Directories...
Apr 04 10:15:22 braindead.localdomain systemd[1687]: Finished 
systemd-tmpfiles-clean.service - Cleanup of User's Temporary Files and 
Directories.
Apr 04 10:15:38 braindead.localdomain audit: BPF prog-id=86 op=LOAD
Apr 04 10:15:38 braindead.localdomain systemd[1]: Starting 
plocate-updatedb.service - Update the plocate database...
Apr 04 10:15:41 braindead.localdomain systemd[1687]: Started 
vte-spawn-21527424-cb2d-479f-af17-22251e2b37a0.scope - VTE child process 
5144 launched by gnome-terminal-server process 4668.
Apr 04 10:15:53 braindead.localdomain systemd[1]: 
plocate-updatedb.service: Deactivated successfully.
Apr 04 10:15:53 braindead.localdomain systemd[1]: Finished 
plocate-updatedb.service - Update the plocate database.
Apr 04 10:15:53 braindead.localdomain systemd[1]: 
plocate-updatedb.service: Consumed 6.802s CPU time.
Apr 04 10:15:53 braindead.localdomain audit[1]: SERVICE_START pid=1 
uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 
msg='unit=plocate-updatedb comm="systemd" exe="/usr/lib/systemd/systemd" 
hostname=? addr=? terminal=? res=success'
Apr 04 10:15:53 braindead.localdomain audit[1]: SERVICE_STOP pid=1 uid=0 
auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 
msg='unit=plocate-updatedb comm="systemd" exe="/usr/lib/systemd/systemd" 
hostname=? addr=? terminal=? res=success'
Apr 04 10:15:54 braindead.localdomain audit: BPF prog-id=86 op=UNLOAD
Apr 04 10:16:13 braindead.localdomain baloo_file_extractor[5251]: 
kf.idletime: Could not find any system poller plugin
Apr 04 10:16:13 braindead.localdomain baloo_file_extractor[5251]: 
qt.core.qobject.connect: QObject::connect(KAbstractIdleTimePoller, 
KIdleTime): invalid nullptr parameter
Apr 04 10:16:13 braindead.localdomain baloo_file_extractor[5251]: 
qt.core.qobject.connect: QObject::connect(KAbstractIdleTimePoller, 
KIdleTime): invalid nullptr parameter

There's a bunch of errors in those logs starting with these two 
seemingly important lines:

Apr 04 10:15:06 braindead.localdomain kernel: Bluetooth: hci0: QCA 
Failed to send TLV segment (-110)
Apr 04 10:15:06 braindead.localdomain kernel: Bluetooth: hci0: QCA 
Failed to download patch (-110)

FWIW, I get similar logs after logging into KDE Plasma. I also get 
similar logs after a warm boot.

This appears to be some kind of bug in the initialization of the 
hardware. Is there any additional information I can provide to help 
troubleshoot this problem.

wt
-- 
You're more amazing than you think!