Bug 214863

Summary:	Intel AX200 "Bluetooth: hci0: failed to restart LE scan: status 31"
Product:	Drivers	Reporter:	Kai-Heng Feng (kai.heng.feng)
Component:	Bluetooth	Assignee:	linux-bluetooth (linux-bluetooth)
Status:	RESOLVED WILL_NOT_FIX
Severity:	normal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	mainline, bluetooh-next	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	dmesg with dyndbg enabled btmon

Description Kai-Heng Feng 2021-10-29 02:02:51 UTC

Device: AX200
Bus 001 Device 002: ID 8087:0029 Intel Corp. 

Kernel: bluetooth-next
HEAD 2128939fe2e771645dd88e1938c27fdf96bd1cd0 ("Bluetooth: Fix removing adv when processing cmd complete")

Reproduce step:
1) Open GNOME Settings' Bluetooh panel and let it continuously scan
2) Keep `rkfill block` and `rfkill unblock` loop.

Result:
Bluetooth stops working:
[   29.706981] Bluetooth: hci0: failed to restart LE scan: status 31

Comment 1 Kai-Heng Feng 2021-10-29 02:03:25 UTC

Created attachment 299357 [details]
dmesg with dyndbg enabled

Comment 2 Kai-Heng Feng 2021-10-29 02:03:41 UTC

Created attachment 299359 [details]
btmon

Comment 3 Kai-Heng Feng 2022-04-14 02:12:24 UTC

With latest kernel/firmware, the error still shows but Bluetooth seems to continue to work.