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From: Marcel Holtmann <marcel@holtmann.org>
To: BlueZ users <bluez-users@lists.sourceforge.net>
Subject: Re: [Bluez-users] Hci Reset Problem - Caused by USB Hub
Date: Mon, 31 Jul 2006 20:19:40 +0200	[thread overview]
Message-ID: <1154369980.4982.14.camel@aeonflux.holtmann.net> (raw)
In-Reply-To: <20060731182135.488b017c@localhost.localdomain>

Hi Andreas,

> further tests proofed that the problem described here are caused by
> the USB-hub used. It seems to be unable to handle the load and just
> breaks down. The same operations are working on other (higher quality) hubs.
> 
> Watch out for lines like
> 
>     usb 1-1: USB disconnect, address 29
> 
> in syslog and/or dmesg to check if your problem is similar. Make sure
> not to mess with real physical disconnects which produce the same log
> output.

does this also happens if you load the hci_usb driver with "isoc=0" to
disable all ISOC transfers.

> I guess the HCI_RESET is issued by bluez after the device comes back on.

This could be the case.

Regards

Marcel



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  reply	other threads:[~2006-07-31 18:19 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-07-27 16:06 [Bluez-users] Hci Reset Problem Lan Zhang
2006-07-28  1:56 ` Marcel Holtmann
2006-07-28 10:37   ` Andreas Gaufer
2006-07-28 11:39     ` Andreas Gaufer
2006-07-31 16:21       ` [Bluez-users] Hci Reset Problem - Caused by USB Hub Andreas Gaufer
2006-07-31 18:19         ` Marcel Holtmann [this message]
2006-08-01 13:39           ` Andreas Gaufer
2006-08-02  1:21             ` Marcel Holtmann

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