Hi,
While using a COM One Bluetooth USB dongle, after a random
amount of time, the device becomes unresponsive (no HCI
commands are accepted). The only solution is to physically
remove the dongle and re-insert it.
The system is Fedora Core 3, kernel version 2.6.10-1.741_FC3.
These are the relevant messages from /var/log/messages:
Feb 15 14:20:22 corse kernel: usb 2-2: new full speed USB device using
uhci_hcd and address 7
Feb 15 14:22:02 corse kernel: hci_cmd_task: hci0 command tx timeout
Also, here is the output of hcidump -i hci0 -x before the crash occurs:
> HCI Event: Connect Complete (0x03) plen 11
00 28 00 3E 17 39 EE 02 00 01 00
< ACL data: handle 0x0028 flags 0x02 dlen 12
L2CAP(s): Connect req: psm 4097 scid 0x0041
< ACL data: handle 0x0028 flags 0x02 dlen 12
L2CAP(s): Connect req: psm 4097 scid 0x0040
< HCI Command: Inquiry Cancel (0x01|0x0002) plen 0
< HCI Command: Disconnect (0x01|0x0006) plen 3
28 00 13
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1
00
As you can see the last three commands get no answers.
Here's (the relevant parts of) the output of lsmod:
Module Size Used by
dtl1_cs 11845 3
l2cap 26053 3
pcmcia 20805 5 dtl1_cs
dm_mod 55509 0
ac 4805 0
joydev 9217 0
hci_usb 15041 3
bluetooth 48069 7 dtl1_cs,l2cap,hci_usb
yenta_socket 19137 1
pcmcia_core 50817 3 dtl1_cs,pcmcia,yenta_socket
uhci_hcd 31321 0
hw_random 5717 0
I have read that this behavior might be caused by the loss of
syncronization between the host and the device. Is there any way to fix this?
Thanks,
Catalin
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Hi Catalin,
> While using a COM One Bluetooth USB dongle, after a random
> amount of time, the device becomes unresponsive (no HCI
> commands are accepted). The only solution is to physically
> remove the dongle and re-insert it.
>
> The system is Fedora Core 3, kernel version 2.6.10-1.741_FC3.
>
> These are the relevant messages from /var/log/messages:
>
> Feb 15 14:20:22 corse kernel: usb 2-2: new full speed USB device using
> uhci_hcd and address 7
> Feb 15 14:22:02 corse kernel: hci_cmd_task: hci0 command tx timeout
>
> Also, here is the output of hcidump -i hci0 -x before the crash occurs:
>
> > HCI Event: Connect Complete (0x03) plen 11
> 00 28 00 3E 17 39 EE 02 00 01 00
> < ACL data: handle 0x0028 flags 0x02 dlen 12
> L2CAP(s): Connect req: psm 4097 scid 0x0041
> < ACL data: handle 0x0028 flags 0x02 dlen 12
> L2CAP(s): Connect req: psm 4097 scid 0x0040
> < HCI Command: Inquiry Cancel (0x01|0x0002) plen 0
> < HCI Command: Disconnect (0x01|0x0006) plen 3
> 28 00 13
> < HCI Command: Write Scan Enable (0x03|0x001a) plen 1
> 00
>
> As you can see the last three commands get no answers.
>
> Here's (the relevant parts of) the output of lsmod:
>
> Module Size Used by
> dtl1_cs 11845 3
> l2cap 26053 3
> pcmcia 20805 5 dtl1_cs
> dm_mod 55509 0
> ac 4805 0
> joydev 9217 0
> hci_usb 15041 3
> bluetooth 48069 7 dtl1_cs,l2cap,hci_usb
> yenta_socket 19137 1
> pcmcia_core 50817 3 dtl1_cs,pcmcia,yenta_socket
> uhci_hcd 31321 0
> hw_random 5717 0
>
> I have read that this behavior might be caused by the loss of
> syncronization between the host and the device. Is there any way to fix this?
show us the content of /proc/bus/usb/devices and you should try to load
the hci_usb driver with isoc=0 to disable the ISOC transfers. What does
lspci say about your USB host controller?
Regards
Marcel
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