[Xastir] serial port error with serial GPS

[Gerry Creager N5JXS]

This is a test.  How many on this list remember what 'uucp' means/meant?

gerry n5jxs

Curt, WE7U wrote:
> On Thu, 26 Feb 2004, Amanda K. Martino wrote:
> 
> 
>>I have Xastir compiled with ImageMagick support on a P3 machine running
>>Linux Red Hat 9. I've tried using both serial TNC and serial GPS with
>>Xastir. Serial TNC works just fine. Serial GPS, however, gives me an
>>"Error opening Interface 0. Hard fail" when I try to start the interface.
>>I did run the chmod 4555 /usr/local/bin/xastir command when I compiled
>>Xastir, and my procedure for starting up Xastir is as follows:
>>login to linux as user capstone
>>su to root
>>xastir & from a terminal window as root.
> 
> 
> Once you've done the "chmod" command, it allows Xastir to gain root
> priviledges when it needs to, such as when opening ports.  You don't
> need to "su" in order to run Xastir, and in fact it's not
> recommended because then when Xastir tries to drop priviledges when
> it doesn't need them, you're still running as root.
> 
> I'd run Xastir as the "capstone" user.
> 
> 
> 
>>I don't see how it could be a permissions problem, but as I'm new to
>>Xastir I don't have much to base that on except what I just described
>>above. As mentioned before, serial TNC works perfectly fine. Does anyone
>>have any suggestions as to what might be causing this? Thanks in advance
>>for any help.
> 
> 
> If you do an "ls -l /dev/ttyS?" you'll see the permissions and
> user/group for your serial devices.  You are probably using
> /dev/ttyS0 and /dev/ttyS1 for your ports, right?
> 
> In your /etc/group file, add your "capstone" user to whatever group
> the serial ports belong to.  On my system it's the "uucp" group.
> Change the permissions on the serial devices to 660 if they're not
> already.  Mine look like this:
> 
> crw-rw----    1 root     uucp       4,  64 2003-10-02 13:45 /dev/ttyS0
> crw-rw----    1 root     uucp       4,  65 2003-10-02 13:45 /dev/ttyS1
> crw-rw----    1 root     uucp       4,  66 2003-10-02 13:45 /dev/ttyS2
> crw-rw----    1 root     uucp       4,  67 2003-10-02 13:45 /dev/ttyS3
> 
> After that, you should be able to come in using the "uucp"
> permissions as the "capstone" user, and run Xastir as the "capstone"
> user as well.  Make sense?
> 
> Also make sure you have the case correct for the device name in the
> Interface->Properties dialog for that interface.  You need a capital
> 'S'.
> 
> --
> Curt, WE7U			    archer at eskimo dot com
> Arlington, WA, USA		http://www.eskimo.com/~archer
> "Lotto:    A tax on people who are bad at math." -- unknown
> "Windows:  Microsoft's tax on computer illiterates." -- WE7U
> "The world DOES revolve around me:  I picked the coordinate system!"
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Network Engineering -- AATLT, Texas A&M University	
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.847.8578
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