# Re: \[Bluez-devel\] hci\_acl\_tx\_to: hci0 ACL tx timeout, VIA USB HUBS

- From: thomas.schorpp \<hidden\>
- Date: 2004-01-06 15:08:33 
- List: linux-bluetooth
- Page: https://ratatoskr.run/linux-bluetooth/2004/01/9576709
- Thread: https://ratatoskr.run/linux-bluetooth/2004/01/9576719/t.md

```text
Marcel Holtmann wrote:
> Hi Thomas,
>
>
>>>This is HCI 16.4 firmware and it should work fine. Do you use the SCO
>>>audio support for the HCI USB driver? If yes, disable it, because I
>>>heard of problems with ISOC transfers on VIA chips if I remember
>>>correctly.
>>
>>NO sco module loaded(?)
>
>
> I am not talking about the sco module. I am talking about the SCO audio
> option of the HCI USB driver. Disable it to avoid ISOC transfers.

yes, ill check, i think it is disabled, wanted only pan from the beginning, thx a lot.

>
>
>>>Use 2.4.23-mh1 or 2.4.24-mh1.
>>
>>roger that. what change do you think in the changelogs should target the problem?
>
>
> In general nothing will help here, but I must be sure that we talk about
> the same version of the Bluetooth subsystem.

yes, ill try the patches IF theyre considered stable.
will also try another usb driver -WARNING- do not use via vt6202 ehci chipsets, they crashed my gatewaysystem reproducable on boot. :(

but i wonder why the window$ stacks do not trigger the fault... maybe usb... have problems with sane scanner too :)

>
> Regards
>
> Marcel
>
>
>
>
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y
tom
```