Bug 216314

Summary:	After resume the host stops listening to incoming Bluetooth pairing requests
Product:	Drivers	Reporter:	Artem S. Tashkinov (aros)
Component:	Bluetooth	Assignee:	linux-bluetooth (linux-bluetooth)
Status:	RESOLVED PATCH_ALREADY_AVAILABLE
Severity:	normal	CC:	kparal, mail, tedd.an
Priority:	P1
Hardware:	AMD
OS:	Linux
Kernel Version:	5.18.10	Subsystem:
Regression:	Yes	Bisected commit-id:

Description Artem S. Tashkinov 2022-08-01 12:49:06 UTC

This looks like a regression in kernel 5.18. The device is: Intel Corp. Wireless-AC 9260 Bluetooth Adapter

After booting, my BT headphones connect to my host automatically. Once I suspend, this no longer happens, there's nothing in the system log:

# bluetoothctl
Agent registered
AdvertisementMonitor path registered

[ I'm switching on my BT headphones - no messages nothing, ok, switching them off ]

[bluetooth]# power off
Changing power off succeeded
[CHG] Controller 48:89:E7:XX:YY:ZZ Powered: no
[CHG] Controller 48:89:E7:XX:YY:ZZ Discovering: no
[CHG] Controller 48:89:E7:XX:YY:ZZ Class: 0x00000000
[bluetooth]# power on
[CHG] Controller 48:89:E7:XX:YY:ZZ Class: 0x007c0104
Changing power on succeeded
[CHG] Controller 48:89:E7:XX:YY:ZZ Powered: yes

[ I'm switching on my BT headphones again ]

[CHG] Device 17:10:28:AA:BB:CC Connected: yes
[NEW] Endpoint /org/bluez/hci0/dev_17_10_28_AA_BB_CC/sep1 
[NEW] Endpoint /org/bluez/hci0/dev_17_10_28_AA_BB_CC/sep2 
[NEW] Transport /org/bluez/hci0/dev_17_10_28_AA_BB_CC/fd1 
[CHG] Transport /org/bluez/hci0/dev_17_10_28_AA_BB_CC/fd1 Volume: 0x000f (15)
[DEL] Transport /org/bluez/hci0/dev_17_10_28_AA_BB_CC/fd1 
[NEW] Transport /org/bluez/hci0/dev_17_10_28_AA_BB_CC/sep1/fd2 
[CHG] Transport /org/bluez/hci0/dev_17_10_28_AA_BB_CC/sep1/fd2 Volume: 0x000f (15)

Comment 1 Artem S. Tashkinov 2022-08-01 12:55:12 UTC

I'm looking at

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/bluetooth/btintel.c

and there's nothing which could indicate a regression. Maybe it's an issue with bluez?

Comment 2 Artem S. Tashkinov 2022-08-01 13:00:21 UTC

Also file here: https://github.com/bluez/bluez/issues/373

Comment 3 Kamil Paral 2022-08-01 13:34:42 UTC

Downstream Fedora bug with some details and lots of people affected:
https://bugzilla.redhat.com/show_bug.cgi?id=2100761

Comment 4 Artem S. Tashkinov 2022-08-01 23:10:34 UTC

Must have been fixed by:

https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=68253f3cd715e819bc4bff2b0e6b21234e259d56

Sadly, no one has pushed this very important fix to stable.