Hi,
Having gotten my PAN to work, I'm having trouble keeping it alive. From
time to time, and the time varies from days to hours, the link to the
computer in the next room dies.
On the NAP side, I get the following errors on the active console:
hci_acl_tx_to: hci0 ACL tx timeout
hci_acl_tx_to: hci0 killing stalled ACL connection 6E:A0:B2:72:02:00
hci_acl_tx_to: hci0 ACL tx timeout
hci_acl_tx_to: hci0 killing stalled ACL connection 6E:A0:B2:72:02:00
Nothing of note seems to happen on the PANU side, except acknowledgement
that the connection has died.
This seems to result in the bluetooth adaptor on the NAP side being put
into an odd state. Subsequent attempts to reestablish the connection fail
until I physically disconnect the dongle and reconnect it. When I
disconnect it, the following appears on the console:
usb-uhci.c: process_transfer: fixed toggle
Once I plug it back in again, all is well until the next time.
I'm running kernel 2.4.32 on both ends, with the same generic brand dongle
at each end also. I'm running bluez libs and utils version 2.25.
hci0: Type: USB
BD Address: <removed for security> ACL MTU: 192:8 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:1643814 acl:6762 sco:0 events:139336 errors:0
TX bytes:32350592 acl:168674 sco:0 commands:16 errors:0
Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH HOLD SNIFF PARK
Link mode: ACCEPT MASTER
Name: 'data (0)'
Class: 0x3e0100
Service Classes: Networking, Rendering, Capturing
Device Class: Computer, Uncategorized
HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver:
0x20d
Manufacturer: Cambridge Silicon Radio (10)
Whilst on the subject of pans, I've got a few questions:
1. If I'm just going to connect PCs, does it matter whether I make the
server act as a GN or NAP? If so, which is better? I have to say I'm not
clear on what the difference is.
2. I tend to get average ping times of about 50 ms over the link, and
pretty slow transfer rates, to the point where high bitrate MP3 files don't
always play cleanly. Is this normal? What kinds of bitrates can I expect
over a bluetooth connection?
3. If I want to also use my bluetooth dongle for other applications (e.g.
a headset), will this eat into my transfer rates still further?
One other question which may not be related at all. The person using the
PANU machine keeps seeing the following on their console:
Apr 2 01:29:49 janeway kernel: usb-uhci.c: iso_find_start: gap in seamless
isochronous scheduling
Is this likely to be a bluetooth thing or something else?
A syslog dump of the PAN connection dying appears below:
>From NAP:
Apr 2 01:56:12 data kernel: NETDEV WATCHDOG: bnep0: transmit timed out
Apr 2 01:56:43 data last message repeated 8 times
Apr 2 01:57:32 data last message repeated 12 times
Apr 2 01:57:32 data kernel: hci_acl_tx_to: hci0 ACL tx timeout
Apr 2 01:57:32 data kernel: hci_acl_tx_to: hci0 killing stalled ACL
connection
6E:A0:B2:72:02:00
Apr 2 01:57:32 data kernel: pan0: port 1(bnep0) entering disabled state
Apr 2 01:57:32 data kernel: pan0: port 1(bnep0) entering disabled state
Apr 2 01:57:32 data kernel: device bnep0 left promiscuous mode
Apr 2 01:57:34 data /etc/hotplug/net.agent: invoke ifdown bnep0
Apr 2 01:58:12 data kernel: usb.c: USB disconnect on device 00:07.2-2
address 16
Apr 2 01:58:12 data kernel: usb-uhci.c: process_transfer: fixed toggle
Apr 2 01:58:12 data kernel: usb-uhci.c: process_transfer: fixed toggle
Apr 2 01:58:12 data hcid[11449]: HCI dev 0 down
Apr 2 01:58:12 data hcid[11449]: Stoping security manager 0
Apr 2 01:58:12 data hcid[11449]: HCI dev 0 unregistered
Apr 2 01:58:12 data /sbin/hotplug: no runnable
/etc/hotplug/bluetooth.agent is
installed
Apr 2 01:58:15 data kernel: hub.c: new USB device 00:07.2-2, assigned
address 17
Apr 2 01:58:16 data hcid[11449]: HCI dev 0 registered
Apr 2 01:58:16 data hcid[11449]: HCI dev 0 up
Apr 2 01:58:16 data hcid[11449]: Starting security manager 0
Apr 2 01:58:16 data /sbin/hotplug: no runnable
/etc/hotplug/bluetooth.agent is
installed
Apr 2 01:58:19 data /etc/hotplug/usb.agent: Setup hci_usb for USB product
a12/1
/525
Apr 2 01:58:19 data last message repeated 2 times
Apr 2 01:58:20 data /etc/hotplug/usb.agent: missing kernel or user mode
driver
hci_usb
Apr 2 01:58:21 data last message repeated 2 times
Apr 2 01:58:23 data pand[12814]: New connection from 00:02:72:B2:A0:6E
bnep0
Apr 2 01:58:23 data /etc/hotplug/net.agent: invoke ifup bnep0
Apr 2 01:58:23 data kernel: device bnep0 entered promiscuous mode
Apr 2 01:58:23 data kernel: pan0: port 1(bnep0) entering learning state
Apr 2 01:58:23 data kernel: pan0: port 1(bnep0) entering forwarding state
Apr 2 01:58:23 data kernel: pan0: topology change detected, propagating
>From PANU:
Apr 2 01:57:35 janeway pand[15112]: bnep0 disconnected : Connection reset
by peer
<snip out lots of NFS complaining>
Apr 2 01:57:40 janeway pand[15112]: Connecting to <address of NAP removed
for security>
<snipped more complaints from NFS>
Apr 2 01:58:20 janeway pand[15112]: Connect to <address of NAP> failed.
Connection timed out(110)
Apr 2 01:58:25 janeway pand[15112]: Connecting to <address of NAP>
Apr 2 01:58:26 janeway pand[15112]: bnep0 connected
NB: There's no guarantee that the clocks of these 2 PCs are in sync (that's
on my todo list).
Any help appreciated.
Geoff.
-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
_______________________________________________
Bluez-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/bluez-users