Re: [Bluez-users] MX900 sometimes catalepsic

[Marcel Holtmann <marcel@holtmann.org>]

Hi Charles,

> I'm running 2.6.10-gentoo-r4 with patch-2.6.10-mh1.gz. My hardware is a
> Logitech MX900 mouse and a Dell Inspiron 8600 with a CSR chip :
> 
> hci0:   Type: USB
>         BD Address: 00:10:C6:22:54:AF ACL MTU: 192:8  SCO MTU: 64:8
>         UP RUNNING PSCAN ISCAN 
>         RX bytes:113629 acl:7992 sco:0 events:88 errors:0
>         TX bytes:1043 acl:24 sco:0 commands:42 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: SLAVE ACCEPT 
>         Name: 'laptopcb (0)'
>         Class: 0x100100
>         Service Classes: Object Transfer
>         Device Class: Computer, Uncategorized
>         HCI Ver: 1.1 (0x1) HCI Rev: 0x235 LMP Ver: 1.1 (0x1) LMP Subver: 0x235
>         Manufacturer: Cambridge Silicon Radio (10)
> 
> I'm not using the mouse bluetooth dock for any connection (only battery
> loading).
> 
> Often, after unpacking my laptop and MX900 mouse from its bag, the mouse
> appear to "hang". The laptop doesn't see it, and I have to open the
> mouse battery location and quickly unplug one battery to reset the
> mouse. After this treatment, the mouse announce itself and the laptop
> sees it and create the devices with udev.
> 
> The problem happen about 1/4 of the time when unpacking the laptop, but
> in a systematic way after a reboot (eg after upgrading my kernel). I
> never boot my laptop under Windows, and I never use the mouse with other
> machines. The "connect" button has no effect.
> 
> The problem has be present since a long time and several kernels and
> bluez patches, maybe since always.
> 
> It would only be annoying, but the battery door of my mouse is starting
> to present a bad shape after openning it with just about all the tools
> that fits it, including cisors.

I have no idea what the problem is, but I assume that it is because of
the reconnect feature of the mouse. I will always try to reconnect when
you move your bag and after some failed retries it may deadlock itself.

On the other hand there is maybe a small race when you shutdown the
machine and disconnect every device. May a "hciconfig hci0 noscan"
before calling "hidd -K" will help.

Regards

Marcel




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