Re: [Bluez-devel] Bluetooth HID device doesn't work (HID create error)

[Marcel Holtmann <marcel@holtmann.org>]

Hi Michal,

> I have Sony Ericsson K700 mobile phone, which supports standard HID profile (you
> can use it as remote control for your computer). I have tried this function in
> november (or december) last year and it had worked without problems. But when I
> tried it today, it doesn't work. My mobile phone freezes on "Connecting" and I
> must restart it.
> 
> I have kernel 2.6.16.4, udev 089, bluez-libs & bluez-utils 2.25. My phone is
> paired with my PC and every other bluetooth functions work without problems
> (file transfer, addressbook synchronization, internet connection via GPRS,
> etc.). hidp kernel module is loaded and hidd --server is running (as root). This
> is what hcid and hidd gives me when I try it:
> 
> hcid[2620]: link_key_request (sba=00:13:85:00:0E:62, dba=00:12:EE:7D:03:CF)
> hidd[2634]: HID create error 2 (No such file or directory)
> 
> I have tried also strace on hidd:
> 
> open("/usr/var/lib/bluetooth/00:13:85:00:0E:62/hidd", O_RDONLY) = -1 ENOENT (No
> such file or directory)
> 
> Well, this file really doesn't exist, so I have tried to create it manually
> (touch /usr/var/lib/bluetooth/00:13:85:00:0E:62/hidd) and then repeat it. I have
> also checked write permissions and it looks good. Now hidd gives me this error:
> 
> hidd[3846]: HID create error 22 (Invalid argument)
> 
> And if I try strace it:
> open("/usr/var/lib/bluetooth/00:13:85:00:0E:62/hidd", O_RDONLY) = 9
> flock(9, LOCK_SH)                       = 0
> fstat64(9, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
> mmap2(NULL, 0, PROT_READ, MAP_SHARED, 9, 0) = -1 EINVAL (Invalid argument)
> 
> I am really lost now, I don't know where is the problem. Can you please help me?

use "hidd --search" to connect to your phone. You need to do this at
least once to have the correct data in the hidd file.

Regards

Marcel




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