[Bluez-users] Device 'sleeping' and Reconnecting

[Bluez-users] Device 'sleeping' and Reconnecting

[Chris MacDonald]

Hi all,

I just recently purchased an Apple bluetooth keyboard and I'm just 
trying to wrestle with it to get things working smoothly.

So far I've managed to connect to it and have it function properly as a 
keyboard but there seems to be some kind of power saving function to the 
keyboard that I'm having problems with. After about 20 minutes or so (I 
haven't been patient enough to figure out exactly how long it is) after 
being left alone the keyboard no longer functions. Opening hcidump with 
another keyboard and watching the output shows that the keyboard seems 
to be sending something to my bluetooth receiver, but the connection 
never reestablishes to the point where I can type with the keyboard again.

Currently to reconnect everything I just turn the power to the keyboard 
off and on again then with a second keyboard I run 'hidd -connect 
BT_ADDR' and it reconnects. It may be worth mentioning that if I happen 
to hit a key on the keyboard after restarting it and immediately try the 
aforementioned command it fails.

Ideally what I'd like to do is have the keyboard come back to life and 
'just work'. Barring that I'm wondering if it'd be possible to throw 
something into my crontab to keep the connection alive. If anyone can 
help in this endevour that would be awesome. I'd be more than willing to 
provide the necessary output from any commands that should be run to 
shed some light on the situation, I just haven't included any here 
because I'm not sure what's needed/relevant.

Thanks in advance,
Chris

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Re: [Bluez-users] Device 'sleeping' and Reconnecting

[Chris MacDonald]

Hello...

Me again, I've finally had a moment to play with this again so I have some logs that may help. I can still connect to the Apple bluetooth keyboard but the connection only lasts 30 minutes while idle then it disconnects...

...
< ACL data: handle 40 flags 0x02 dlen 12
    L2CAP(s): Disconn req: dcid 0x0042 scid 0x0041
> HCI Event: Number of Completed Packets (0x13) plen 5
< ACL data: handle 40 flags 0x02 dlen 12
    L2CAP(s): Disconn req: dcid 0x0041 scid 0x0040
> HCI Event: Number of Completed Packets (0x13) plen 5
> ACL data: handle 40 flags 0x02 dlen 12
    L2CAP(s): Disconn rsp: dcid 0x0042 scid 0x0041
> ACL data: handle 40 flags 0x02 dlen 12
    L2CAP(s): Disconn rsp: dcid 0x0041 scid 0x0040
< HCI Command: Disconnect (0x01|0x0006) plen 3
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Disconn Complete (0x05) plen 4
...

Then when I hit a key...

...
> HCI Event: Connect Request (0x04) plen 10
< HCI Command: Accept Connection Request (0x01|0x0009) plen 7
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Link Key Request (0x17) plen 6
< HCI Command: Link Key Request Reply (0x01|0x000b) plen 22
> HCI Event: Command Complete (0x0e) plen 10
> HCI Event: Connect Complete (0x03) plen 11
...

Which looks like it's reconnecting, but I can never type again with the keyboard, each time I type it just looks like it's trying to reconnect again. It takes an "hidd --connect ..." to connect to the keyboard and type again. This is all taken with hcidump 1.3, I have more logs available.

I'm currently running Gentoo (2.6.19-gentoo-r5 from Portage) along with bluez-utils and bluez-libs 2.25 from Portage as well. Any help would be greatly appreciated, ideally I'd just like to have the keyboard reconnect and still be usable. I'm not sure if it's a simple directive I'm missing in my hcid.conf or something else along those lines. Speaking if which, here's my hcid.conf...

options {
        autoinit yes;
        security auto;
        pairing multi;
        pin_helper /usr/bin/bluepin;
}
device {
        name "BlueZ (%d)";
        class 0x100;
        iscan enable; pscan enable;
        lm accept;
        lp rswitch,hold,sniff,park;
        auth enable;
        encrypt enable;
}

Again, any help would be great, thanks.

Chris

On Tue, 05 Dec 2006 22:33:05 -0500, Chris MacDonald <chris@fourthandvine.com> wrote:
> Hi all,
> 
> I just recently purchased an Apple bluetooth keyboard and I'm just
> trying to wrestle with it to get things working smoothly.
> 
> So far I've managed to connect to it and have it function properly as a
> keyboard but there seems to be some kind of power saving function to the
> keyboard that I'm having problems with. After about 20 minutes or so (I
> haven't been patient enough to figure out exactly how long it is) after
> being left alone the keyboard no longer functions. Opening hcidump with
> another keyboard and watching the output shows that the keyboard seems
> to be sending something to my bluetooth receiver, but the connection
> never reestablishes to the point where I can type with the keyboard again.
> 
> Currently to reconnect everything I just turn the power to the keyboard
> off and on again then with a second keyboard I run 'hidd -connect
> BT_ADDR' and it reconnects. It may be worth mentioning that if I happen
> to hit a key on the keyboard after restarting it and immediately try the
> aforementioned command it fails.
> 
> Ideally what I'd like to do is have the keyboard come back to life and
> 'just work'. Barring that I'm wondering if it'd be possible to throw
> something into my crontab to keep the connection alive. If anyone can
> help in this endevour that would be awesome. I'd be more than willing to
> provide the necessary output from any commands that should be run to
> shed some light on the situation, I just haven't included any here
> because I'm not sure what's needed/relevant.
> 
> Thanks in advance,
> Chris
> 
> -------------------------------------------------------------------------
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> Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> opinions on IT & business topics through brief surveys - and earn cash
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> Bluez-users mailing list
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