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From: bugzilla-daemon@bugzilla.kernel.org
To: linux-bluetooth@vger.kernel.org
Subject: [Bug 198699] Kernel regularly logs: Bluetooth: hci0: last event is not cmd complete (0x0f)
Date: Mon, 22 Oct 2018 12:43:41 +0000
Message-ID: <bug-198699-62941-NacUFtsZlQ@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-198699-62941@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=198699

Matthias Pritschet (bugzilla.kernel.org@pritschet.eu) changed:

           What    |Removed                     |Added
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                 CC|                            |bugzilla.kernel.org@pritsch
                   |                            |et.eu

--- Comment #15 from Matthias Pritschet (bugzilla.kernel.org@pritschet.eu) ---
This Bug seems to affect even basic HCI functionality:
"hcitool inq" is never returning in my case. dmesg gives me said error message.
I have tried two different USB-Bluetooth Dongles:

[ ] usb 2-2: New USB device found, idVendor=04b4, idProduct=f901, bcdDevice=
1.12
[ ] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ ] usb 2-2: Product: CYW20704A2
[ ] usb 2-2: Manufacturer: Cypress Semi
[ ] Bluetooth: hci0: last event is not cmd complete (0x0f)

[ ] usb 2-2: New USB device found, idVendor=0a12, idProduct=0001,
bcdDevice=88.91
[ ] usb 2-2: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[ ] usb 2-2: Product: CSR8510 A10
[ ] Bluetooth: hci0: last event is not cmd complete (0x0f)

Also btmon/hcidump just seem to freeze:

< HCI Command: Inquiry (0x01|0x0001) plen 5     #1 [hci0] 10.211282             
        Access code: 0x9e8b33 (General Inquiry)
        Length: 10.24s (0x08)
        Num responses: 0
> HCI Event: Command Status (0x0f) plen 4       #2 [hci0] 10.314299             
      Inquiry (0x01|0x0001) ncmd 1
        Status: Success (0x00)


The only way to recover from this state is to issue a "hciconfig hci0 reset".

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Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-198699-62941@https.bugzilla.kernel.org/>
2018-10-22 12:43 ` bugzilla-daemon [this message]
2018-10-27  4:08 ` bugzilla-daemon
2018-10-27  4:13 ` bugzilla-daemon
2018-10-27  4:17 ` bugzilla-daemon
2018-10-30 19:15 ` bugzilla-daemon
2018-11-04 12:00 ` bugzilla-daemon
2018-11-12 14:22 ` bugzilla-daemon
2018-11-12 17:34 ` bugzilla-daemon
2019-01-18  6:31 ` bugzilla-daemon
2019-01-18  7:22 ` bugzilla-daemon
2019-02-01 21:28 ` bugzilla-daemon
2019-03-27  2:10 ` bugzilla-daemon

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