JOSE NG LEE wrote in a message to Mike Bilow:

 JNL> I am having problem using the last two ports cua4 (COM5) and
 JNL> cua5 (COM6).  Have tried to install a TNC with kiss attach
 JNL> but the last two ports does not respond.  The other first
 JNL> four ports works fine with the same TNC with kiss attach. 
 JNL> When my linux system is initialized, I can see on the screen
 JNL> that recognizes tty00, tty01, tty02, tty03 but the last two
 JNL> ports does not show up. 

First, make sure the devices exist in /dev.

Second, make sure (with "setserial -ag /dev/ttyS*') that the ports really are
configured correctly.  You may find that you need to explicity disable AST
FourPort mode ('^fourport') or something of that nature.
 
-- Mike

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