[Bluez-users] Bluetooth instability problem

[Jens Hottenroth <jens-hottenroth@gmx.de>]

Hi to anyone!

I don't know if i'm at the right spot here, but i'll ask here first. I
have the following problem:

I've 3 "PCs" (one is an embedded linux based broadband handheld tester,
afterwards refered to as bbt), all running linux with Kernels from 2.24
(bbt) to 2.26 (PCs), and identical bluetooth usb-sticks (D-Link BT120).

Here's what i've done / what i know:

Downloaded the latest bluez-libs and bluez-utils, compiled and
installed. Ran configure / make for a new kernel with only that
functions needed, installed it to the bbt.

Running some tests with l2ping brought the following results. I can ping
the bbt, sometimes i get no response messages (max. 5 after another,
most times 4 in a row). This test runs for about 30 minutes, then i
canceled it. The bigger I define paketsize (defaults 44 Bytes) the
faster / more often come those no response messages and, here it comes!,
when more than 250 Bytes are specified, the connection hangs! Aprox. 2
minutes. The bigger the paketsize the faster it hangs.
After it once hung, only a total reset of the bbt gets it running again.

Between those 2 PCs, I only had problems with rfcomm and dun, pan worked
just fine. After i updated the Systems (it's SuSe linux 9.1 and 9.3, i
forgot to say that) those problems where gone.

The biggest Problem is, that i can't path or upgrade the kernel in the bbt.

Does anyone have any suggestions?

-- 

Mit freundlichem Gruß und Dank im voraus.
Kind regards and thanks a lot already.
	

	Jens Hottenroth


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