[Bluez-users] MS Mouse + Internal Dell adaptor

[Bluez-users] MS Mouse + Internal Dell adaptor

[Cameron Hutchison]

Hi,

I have a Dell Inspiron 8500 running Ubuntu Feisty which has an internal
bluetooth adaptor. This adaptor is a v1.1 adaptor.

Some time ago, I purchased a MS bluetooth mouse (Microsoft IntelliMouse
Explorer for Bluetooth) and I had no luck getting it working with the
internal bluetooth adaptor. Since then, I've used the supplied dongle
and accepted that the mouse would not work (a v1.2 mouse) with the
internal adaptor.

Just now, I experimented again, and it still does not work. By "not
work" I mean that I can scan it (hcitool scan), connect to it 
(hidd --connect / --search), but the movement is very jerky and delayed.
i.e. there would be at least a three second lag and the mouse pointer
will jump from one end of the screen to the other.

However, I just noticed that while I am running a scan or inquiry
(hcitool scan / inq), the mouse works properly! When the scan finishes,
it goes back to being jerky / laggy.

Does this symptom ring any bells with anyone here? And any ideas how to
make the mouse work permanently with the internal adaptor?

Regards,

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Re: [Bluez-users] MS Mouse + Internal Dell adaptor

[Marcel Holtmann]

Hi Cameron,

> I have a Dell Inspiron 8500 running Ubuntu Feisty which has an internal
> bluetooth adaptor. This adaptor is a v1.1 adaptor.
> 
> Some time ago, I purchased a MS bluetooth mouse (Microsoft IntelliMouse
> Explorer for Bluetooth) and I had no luck getting it working with the
> internal bluetooth adaptor. Since then, I've used the supplied dongle
> and accepted that the mouse would not work (a v1.2 mouse) with the
> internal adaptor.
> 
> Just now, I experimented again, and it still does not work. By "not
> work" I mean that I can scan it (hcitool scan), connect to it 
> (hidd --connect / --search), but the movement is very jerky and delayed.
> i.e. there would be at least a three second lag and the mouse pointer
> will jump from one end of the screen to the other.
> 
> However, I just noticed that while I am running a scan or inquiry
> (hcitool scan / inq), the mouse works properly! When the scan finishes,
> it goes back to being jerky / laggy.
> 
> Does this symptom ring any bells with anyone here? And any ideas how to
> make the mouse work permanently with the internal adaptor?

the Ubuntu kernel has automatic sniff mode on by default. You might
wanna switch that off via /sys/class/bluetooth/hci0/idle_timeout. Simply
echo 0 into that file.

Some Bluetooth 1.1 chips behave strange with the Bluetooth HID devices
and their usage of sniff mode. I have seen that before. You might also
check with Dell if you can get a firmware update for your adapter.

Regards

Marcel



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