Another post around bluetooth – one I wanted to do for quite some time now, but I have not come around to yet.
As you know, Microsoft will bring its own Bluetooth-Implementation to Windows XP with Service Pack 2 (this and the better WLAN support are two strong reasons for me wanting to install it, but the current RC1 does not work with Delphi’s debugger – I hear, this is fixed in RC2 to be released somewhere in June). What you may not know is that there is some Post-SP1-Fixup floating around that already has rudimentary BT support. I think, it initially came with Microsofts Bluetooth Accessories (Keyboards and Mice).
The Problem with this rudimentary support is that it is not compatible at all with the WIDCOMM-Stack, which provides far more functionality that this MS-thingy does.
The problem gets even worse because this Fixup pack seems to be integrated in quite some OEM preinstallations these days, even if the devices themselfes come with a WIDCOMM stack
I came across this problem with two thinkpads: Initially they have BT disabled. The official way to get it enabled is to first install the Drivers provided by IBM (the WIDCOMM-Stack) and then Press Fn-F5 and click on “Enable” in the bluetooth section. What then happens is that Windows detects the (USB-, though it’s internal hardware, it’s still USB) device and installs its rudimentary support.
The Widcomm-Tools never get to recognize the Bluetooth device – the Icon in the tray stays red. You are locked down to the limited (limited as in virtually no functionality at all) functionality of this Microsoft upgrade
The clou: I did not know this and the IBM-Support I’ve called could not help me either.
So, what’s the solution? How to recognize this problem when it happened?
Recognizing is simple: If the BT-Icon is red despite bluetooth being enabled, this may be the problem. If you want to be sure, open Control Panel / System / Hardware / Device Manager and right-click on the BT-Drvice. Select properties. If Manufacturer is Microsoft, you ran into the trap.
So… how to fix it then?
In the window described above, go to the drivers-Tab, select Update Driver. Then follow these steps:
- Install from a list or specific location
- Don’t search.
- Have Disk
- Enter c:Program Files<WIDCOMM Installation dir>bin
- Ignore the warning about drivers not being signed
- Complete the installation.
Sometimes you must reboot, sometimes not. But now the Widcomm software will recognize the drvice and you will have access to the full functionality
Quite simple – as soon as you have found out what the problem is