[Bug 879548] [NEW] bluetoothd freezes and cannot be killed

[Sergio Callegari]

Public bug reported:

On oneiric, usage of bluetooth is quite problematic for me.

Every now and then, the bluetooth daemon stops working.

1) The bluetooth applet keeps showing a connection
2) System log is filled with some
11400.468174] INFO: task bluetoothd:1941 blocked for more than 120 seconds.
[11400.468190] bluetoothd      D 0000000000000001     0  1941      1 0x00000000
3) Trying to restart the bluetooth service is useless
The bluetoothd daemon cannot be killed, even with kill -9

hcidump gives

HCI sniffer - Bluetooth packet analyzer ver 2.1
device: hci0 snap_len: 1028 filter: 0xffffffffffffffff

and hangs.

Bluetooth was (almost) fine in natty.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: bluez 4.96-0ubuntu4
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Fri Oct 21 18:46:15 2011
InterestingModules: bnep rfcomm btusb bluetooth
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic root=/dev/mapper/DISK00-root ro quiet splash vt.handoff=7
SourcePackage: bluez
UpgradeStatus: Upgraded to oneiric on 2011-10-20 (1 days ago)
dmi.bios.date: 05/13/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.40
dmi.board.name: N68-S
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.40:bd05/13/2009:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnN68-S:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
hciconfig:
 hci0:	Type: BR/EDR  Bus: USB
 	BD Address: 00:09:DD:50:86:63  ACL MTU: 310:10  SCO MTU: 64:8
 	UP RUNNING PSCAN ISCAN INQUIRY 
 	RX bytes:2380135 acl:5747 sco:0 events:2276 errors:0
 	TX bytes:254404 acl:2417 sco:0 commands:61 errors:0
mtime.conffile..etc.bluetooth.rfcomm.conf: 2010-02-26T00:00:56
rfkill:
 0: hci0: Bluetooth
 	Soft blocked: no
 	Hard blocked: no

** Affects: bluez (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug oneiric

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Title:
  bluetoothd freezes and cannot be killed

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