2004-11-08 12:21:05

by Edd Dumbill

[permalink] [raw]
Subject: [Bluez-users] Key bouncing

Hi,

I've noticed that if typing quickly on my Apple Bluetooth keyboard I
often get additional keypresses. For instance, 'mode' comes out as
'moddeo' sometimes. This only affects me when my DLink dongle is in HCI
mode -- I get no issues when in HID mode. I've seen this in kernels
2.6.9 and 2.6.10-rc1.

% hidd --show
00:50:F2:E2:A4:B1 HID Boot Device [045e:007c] connected [boot-protocol]
00:0A:95:39:0F:9E HID Boot Device [05ac:0209] connected [boot-protocol]

% hciconfig -a
hci0: Type: USB
BD Address: 00:0F:3D:38:D3:A8 ACL MTU: 192:8 SCO MTU: 64:8
UP RUNNING PSCAN ISCAN
RX bytes:118698 acl:7768 sco:0 events:201 errors:0
TX bytes:1309 acl:42 sco:0 commands:20 errors:0
Features: 0xff 0xff 0x8f 0x78 0x18 0x18 0x00 0x80
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH HOLD SNIFF PARK
Link mode: SLAVE ACCEPT
Name: 'saag-0'
Class: 0x100100
Service Classes: Object Transfer
Device Class: Computer, Uncategorized
HCI Ver: 1.2 (0x2) HCI Rev: 0x4d9 LMP Ver: 1.2 (0x2) LMP Subver:
0x4d9
Manufacturer: Cambridge Silicon Radio (10)


-- Edd




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2004-11-15 20:52:52

by Patrick

[permalink] [raw]
Subject: Re: [Bluez-users] Key bouncing

I was just about to ask about this same issue. I don't recall when it
started but certain key combinations give the undesired effect.

Trying to type "cd " too quickly always comes out "cdd c" for example.

I have a D-Link adaptor as well.

What do you mean by HID mode?

Edd Dumbill wrote:
> Hi,
>
> I've noticed that if typing quickly on my Apple Bluetooth keyboard I
> often get additional keypresses. For instance, 'mode' comes out as
> 'moddeo' sometimes. This only affects me when my DLink dongle is in HCI
> mode -- I get no issues when in HID mode. I've seen this in kernels
> 2.6.9 and 2.6.10-rc1.
>
> % hidd --show
> 00:50:F2:E2:A4:B1 HID Boot Device [045e:007c] connected [boot-protocol]
> 00:0A:95:39:0F:9E HID Boot Device [05ac:0209] connected [boot-protocol]
>
> % hciconfig -a
> hci0: Type: USB
> BD Address: 00:0F:3D:38:D3:A8 ACL MTU: 192:8 SCO MTU: 64:8
> UP RUNNING PSCAN ISCAN
> RX bytes:118698 acl:7768 sco:0 events:201 errors:0
> TX bytes:1309 acl:42 sco:0 commands:20 errors:0
> Features: 0xff 0xff 0x8f 0x78 0x18 0x18 0x00 0x80
> Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
> Link policy: RSWITCH HOLD SNIFF PARK
> Link mode: SLAVE ACCEPT
> Name: 'saag-0'
> Class: 0x100100
> Service Classes: Object Transfer
> Device Class: Computer, Uncategorized
> HCI Ver: 1.2 (0x2) HCI Rev: 0x4d9 LMP Ver: 1.2 (0x2) LMP Subver:
> 0x4d9
> Manufacturer: Cambridge Silicon Radio (10)
>
>
> -- Edd
>
>
>
>
> -------------------------------------------------------
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2004-11-08 12:57:39

by Marcel Holtmann

[permalink] [raw]
Subject: Re: [Bluez-users] Key bouncing

Hi Edd,

> I've noticed that if typing quickly on my Apple Bluetooth keyboard I
> often get additional keypresses. For instance, 'mode' comes out as
> 'moddeo' sometimes. This only affects me when my DLink dongle is in HCI
> mode -- I get no issues when in HID mode. I've seen this in kernels
> 2.6.9 and 2.6.10-rc1.
>
> % hidd --show
> 00:50:F2:E2:A4:B1 HID Boot Device [045e:007c] connected [boot-protocol]
> 00:0A:95:39:0F:9E HID Boot Device [05ac:0209] connected [boot-protocol]

I have seen this only in boot protocol mode. If you apply the -mh patch
and use report protocol mode this should go away. However in the HID
mode the D-Link also uses the boot protocol and so there must be a way
to avoid it. At the moment I have no idea how to do this, but every
patch is welcome.

Regards

Marcel




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