Hello:

I've got a USB keyboard that is outputting extended USB Codes (F14-F19). My client is using a Linux RedHat 9.0 "xenv" application software that is not recognizing these codes.

We designed and manufactured the keyboard, and the codes are being transmitted and 'seen' on a USB analyzer. I understand that in some host systems, if a code is not part of the 'standard' valid range, the host system will ignore the codes as being invalid.

F13 is being recognized.

Does anyone know about how to update the host system to recognize extended codes?

Any suggestions would be greatly appreciated.

Thanks.

"xenv" ? do you mean "xev" ?
Anyway. Probably the scancodes emitted by these keys are not recognised by the keyboard driver. Do you get any kernel
message about unknown scancodes ?

For more information read http://www.linuxquestions.org/questi...38#post2171038

My customer had provided the 'xenv' reference - sorry if this was an error.

We figured out the issue. While the keyboard was outputing the correct codes, there was a keyboard driver chip that was configured to be a 101 key keyboard - so the host was ignoring the 'extended codes'.

We got the driver chip fixed and all seems better.

Thanks again for the help.