wait a minute... is this bug existend about 5 years, and nobody fixed
it? same crap here,
i built 5.3 kernel month ago, but problem is not with kernel, maybe
with usb driver module, or something.
dmesg -l err:
[ 11.456051] ccp 0000:27:00.2: sev command 0x4 timed out, disabling PSP
[ 11.456055] ccp 0000:27:00.2: SEV: failed to get status. Error: 0x0
[ 8723.273929] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 8723.273935] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 8723.273937] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 8723.283957] Bluetooth: hci0: SCO packet for unknown connection handle 0
[ 9713.725625] debugfs: File 'le_min_key_size' in directory 'hci0' already
present!
[ 9713.725636] debugfs: File 'le_max_key_size' in directory 'hci0' already
present!
hciconfig hci0 -a:
hci0: Type: Primary Bus: USB
BD Address: 18:56:80:48:F8:D1 ACL MTU: 1021:4 SCO MTU: 96:6
UP RUNNING PSCAN
RX bytes:358964 acl:4599 sco:4936 events:2405 errors:0
TX bytes:893887 acl:1189 sco:4923 commands:761 errors:0
Features: 0xbf 0xfe 0x0f 0xfe 0xdb 0xff 0x7b 0x87
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH SNIFF
Link mode: SLAVE ACCEPT
Name: 'computer'
Class: 0x1c0104
Service Classes: Rendering, Capturing, Object Transfer
Device Class: Computer, Desktop workstation
HCI Version: 4.2 (0x8) Revision: 0x1100
LMP Version: 4.2 (0x8) Subversion: 0x1100
Manufacturer: Intel Corp. (2)
uname -a:
Linux computer 5.3.0-42-generic #34~18.04.1-Ubuntu SMP Fri Feb 28 13:42:26 UTC
2020 x86_64 x86_64 x86_64 GNU/Linux
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https://bugs.launchpad.net/bugs/1430696
Title:
Bluetooth audio instability: Bluetooth: hci0 SCO packet for unknown
connection handle
Status in linux package in Ubuntu:
Confirmed
Bug description:
(I'm creating a new bug as instructed at
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/898347/comments/29)
I havea Nokia BH-216 bluetooth headset. Generally it works well, but
randomly (after 5-15 minutes of use) it gets disconnected.
The kernel log output looks like this:
[ 3272.270382] Bluetooth: hci0 SCO packet for unknown connection handle 0
[ 3272.270383] Bluetooth: hci0 SCO packet for unknown connection handle 0
[ 3272.270384] Bluetooth: hci0 SCO packet for unknown connection handle 0
[ 3272.270384] Bluetooth: hci0 SCO packet for unknown connection handle 48
[ 3272.270385] Bluetooth: hci0 SCO packet for unknown connection handle 0
[ 3272.270386] Bluetooth: hci0 SCO packet for unknown connection handle 0
With quick googling this seems to be happening to other people with
other hardware and distributions so i suppose this is a BT audio bug
in kernel. Bug #898347 is related.
Tested on up to date Ubuntu 14.10 x86_64.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-31-generic 3.16.0-31.41
ProcVersionSignature: Ubuntu 3.16.0-31.41-generic 3.16.7-ckt5
Uname: Linux 3.16.0-31-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: vranki 2421 F.... pulseaudio
/dev/snd/controlC1: vranki 2421 F.... pulseaudio
CurrentDesktop: X-Cinnamon
Date: Wed Mar 11 11:22:19 2015
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=71d76087-3fdf-4f57-a0f4-0b128be4d386
InstallationDate: Installed on 2015-02-12 (26 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: LENOVO 20C600LLMS
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-31-generic
root=UUID=e114ca99-f1c7-450f-a4a5-553075d92b7c ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-31-generic N/A
linux-backports-modules-3.16.0-31-generic N/A
linux-firmware 1.138.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/14/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: J9ET96WW (2.16 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20C600LLMS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrJ9ET96WW(2.16):bd10/14/2014:svnLENOVO:pn20C600LLMS:pvrThinkPadEdgeE540:rvnLENOVO:rn20C600LLMS:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20C600LLMS
dmi.product.version: ThinkPad Edge E540
dmi.sys.vendor: LENOVO
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