Public bug reported:
Binary package hint: bluez-utils
When entry 'class' exists in /var/lib/bluetooth/<BD address>/config it
takes precedence over class settings in /etc/bluetooth/hcid.conf. When
starting/restarting bluetooth, regardless of changes in
/etc/bluetooth/hcid.conf hci class remains as saved in
/var/lib/bluetooth/<BD address>/config.
I discovered it when trying to install the newest version of bluez-utils
(3.19). It has "class 0x000100;" set in the default hcid.conf. After
installation hciconfig -a showed:
Class: 0x000100
Service Classes: Unspecified
Device Class: Computer, Uncategorized
I adjusted the "class" entry in etc/bluetooth/hcid.conf and restarted
bluetooth services, but nothing changed. I spent some time on it, and gave up,
reverting to my old version of bluez-utils, which are in ubuntu feisty
repository (3.9). Then i found out, that the problem persists, and I had no
services on the device available!
I found out that removing the file /var/lib/bluetooth/<BD address>/config
resolves the problem, as new file is created with no class entry, and data from
/etc/bluetooth/hcid.conf are processed.
Steps to recreate the condition:
-----------------------------------------------------------------------------------------------
[EMAIL PROTECTED]:~# cat /var/lib/bluetooth/00\:08\:1B\:02\:3B\:67/config
mode discoverable
(this is the only line in my properly working file)
[EMAIL PROTECTED]:~# hciconfig -a
hci0: Type: USB
BD Address: 00:08:1B:02:3B:67 ACL MTU: 192:8 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:2750 acl:0 sco:0 events:57 errors:0
TX bytes:1210 acl:0 sco:0 commands:56 errors:0
Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: HOLD SNIFF PARK
Link mode: ACCEPT MASTER
Name: 'JL-DESKTOP_(0)'
Class: 0x3e0104
Service Classes: Networking, Rendering, Capturing, Object Transfer,
Audio
Device Class: Computer, Desktop workstation
HCI Ver: 1.1 (0x1) HCI Rev: 0x33d LMP Ver: 1.1 (0x1) LMP Subver: 0x33d
Manufacturer: Cambridge Silicon Radio (10)
[EMAIL PROTECTED]:~# echo class 0x000100 >>
/var/lib/bluetooth/00\:08\:1B\:02\:3B\:67/config
[EMAIL PROTECTED]:~# /etc/init.d/bluetooth restart
* Restarting Bluetooth services [ OK ]
[EMAIL PROTECTED]:~# hciconfig -a
hci0: Type: USB
BD Address: 00:08:1B:02:3B:67 ACL MTU: 192:8 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:3344 acl:0 sco:0 events:68 errors:0
TX bytes:1502 acl:0 sco:0 commands:67 errors:0
Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: HOLD SNIFF PARK
Link mode: ACCEPT MASTER
Name: 'JL-DESKTOP_(0)'
Class: 0x000100
Service Classes: Unspecified
Device Class: Computer, Uncategorized
HCI Ver: 1.1 (0x1) HCI Rev: 0x33d LMP Ver: 1.1 (0x1) LMP Subver: 0x33d
Manufacturer: Cambridge Silicon Radio (10)
[EMAIL PROTECTED]:~# gedit /var/lib/bluetooth/00\:08\:1B\:02\:3B\:67/config
(I manually deleted the previously inserted line with class 0x000100)
[EMAIL PROTECTED]:~# /etc/init.d/bluetooth restart
* Restarting Bluetooth services [ OK ]
[EMAIL PROTECTED]:~# hciconfig -a
hci0: Type: USB
BD Address: 00:08:1B:02:3B:67 ACL MTU: 192:8 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:3938 acl:0 sco:0 events:79 errors:0
TX bytes:1794 acl:0 sco:0 commands:78 errors:0
Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: HOLD SNIFF PARK
Link mode: ACCEPT MASTER
Name: 'JL-DESKTOP_(0)'
Class: 0x3e0104
Service Classes: Networking, Rendering, Capturing, Object Transfer,
Audio
Device Class: Computer, Desktop workstation
HCI Ver: 1.1 (0x1) HCI Rev: 0x33d LMP Ver: 1.1 (0x1) LMP Subver: 0x33d
Manufacturer: Cambridge Silicon Radio (10)
---------------------------------------------------------------------
I could not find any references to /var/lib/bluetooth/<BD
address>/config, and tracking it down took me some time, so I file this
as a bug.
** Affects: bluez-utils (Ubuntu)
Importance: Undecided
Status: New
--
Wrong /var/lib/bluetooth/<BD address>/config prevents setting correct hci class
https://bugs.launchpad.net/bugs/144544
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