Logitech QuickCam Driver breaks WinXP USB Audio Driver MIDI

Posted: 07-28-2006, 11:01 PM
I wanted to post this everywhere, since it was a pain of a problem to find,
and I wanted to save others the same headache.

My company uses the MIDI capabilities of the built-in WinXP USB audio driver
to do firmware updates of our product over USB.

I purchased a Logitech Quickcam for Notebooks Deluxe, and after I installed
the Logitech Software/Drivers, our firmware update utility could no longer
communicate with our hardware via the built-in USB Audio Driver.
Although our product appears as a "USB Audio Device" and the various
"Properties" dialogs all report that the device is installed and working
properly, the MIDI ports of our hardware are not available in the
Control Panel->Sounds and Audio Devices-> AUDIO tab-> MIDI music playback
default device drop-down.
As soon as the logitech drivers are uninstalled, our hardwares MIDI ports
magically appear in this drop-down.

I confirmed that
the AudioTrak MIDIMate (www.audiotrak.org), which also relys on the
built-in USB Audio Driver, has the same issue with the Logitech drivers.

Not sure if its a Windows problem or a Logitech problem or both, so I
am posting here as well as to Logitech support.

I am running WinXP SP2, full updated as of 7/28/06
Problem occurs on both my IBM/Lenova z60m and a P4 Desktop,
both with intel USB chipsets.
Logitech Software 8.47.0000 and 8.4.8 exhibit the problem.
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Responses to "Logitech QuickCam Driver breaks WinXP USB Audio Driver MIDI"

impermanence33
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Re: Logitech QuickCam Driver breaks WinXP USB Audio Driver MIDI
Posted: 08-30-2008, 01:44 AM

Forgive me if I am repeating, but I had the same problem where m
Logitech web-cam driver conflicts with the Midi Keyboard (Evolutio
MK-425C) and thanks to various posts have solved the issue. I am no
able to use the Logitech web-cam at the same time as the midi keyboard.

Initially I only had the midi device installed and it worked fine
Then, I installed the Logitech driver and the midi device was no longe
recognised by Reason (my music software).

To solve the problem, I did the following:

1. Go into the registry editor (go to Start Menu, Run and typ
regedit)

2. Go to this location
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318
and delete the two items "LowerFilters" and "UpperFilters"

3. Go to this location
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{6BDD1FC6-810F-11DO-BEC7-08002BE2092F
and delete the item "LowerFilters"

4. Go to this location
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{6BDD1FC5-810F-11DO-BEC7-08002BE2092F
and delete the item "UpperFilters"

5. Move back to the root o
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\

6. Launch a search (i.e Ctrl F with the option to search in "Data") an
type "LVUSBSTA". For any place found (only in the "Control\Class" area)
just delete the "LowerFilters" item (it is the item that contain th
value LVUSBSTA found). For me, I didn't find any other places than th
ones mentioned here.

7. Then uninstall the midi device driver, unplug it and plug it bac
in. Windows should recognise it and install it and it should work!

Thanks to all the people who posted in various forums. All I've done i
summarise the bits and pieces that eventually worked for me

--
impermanence3
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