serial port mystery

[Bill McCormick]

Bill McCormick said the following on 4/4/2005 9:00 AM:
> Bob Chiodini said the following on 4/4/2005 5:37 AM:
> 
>> On Sun, 2005-04-03 at 18:00 -0500, Bill McCormick wrote:
>>
>>> Sometime ago I upgraded to FC3 from RedHat 9 to, among other reasons,
>>> get my VScom PCI 2 port serial card working.
>>>
>>> (RedHat 9 required a kernel re-compile)
>>>
>>> Anyway FC3 made it work. The two ports have been working for sometime on
>>> /dev/ttyS4 & 5. Now, inexplicably (after a reboot test) the 2 ports
>>> insist on using /dev/ttyS14 & 15.
>>>
>>> I removed my rc.serial ...
>>>
>>> <reference>
>>> [root at billinux ~]# cat /tmp/rc.serial
>>> setserial /dev/ttyS4 port 0xeca8 autoconfig
>>> setserial /dev/ttyS5 port 0xec98 autoconfig
>>> </reference>
>>>
>>> ... and still they come up as ttyS14 & 15.
>>>
>>> Somehow, the kernel must be doing this. But how? ACPI?  Where is the
>>> config?
>>> How might this have changed? yum?
>>> Can I still use a rc.serial?
>>> How can I get the ports permissions set to 666?
>>>
>>> <reference from: dmesg>
>>> ACPI: PCI interrupt 0000:00:04.0[A] -> GSI 25 (level, low) -> IRQ 177
>>> ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
>>> ttyS14 at I/O 0xeca8 (irq = 177) is a 16550A
>>> ttyS15 at I/O 0xec98 (irq = 177) is a 16550A
>>> ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
>>> </reference>
>>
>>
>>
>> Bill,
>>
>> Once you figure out the devices names, the default permissions can be
>> set in /etc/udev/permissions.d/50-local.permissions.  Add a line like:
>>
>> ttyS*:root:uucp:0660
>>
>> Change the 0660 as you need.
>>
>> Bob...
>>
> I did't need to add the line: it was already there. Since this is a home
>  system, I care not if ALL ttyS* ports have a+rw.
> 
> 
> John Rosich said the following on 4/4/2005 11:37 AM:
>
>> Bill, looks like we both have the same problem. As best I can tell it's
>> a udev issue. The problem shows up on other motherboards running other
>> add-in serial cards. We haven't found a workaround.
>>
>> I've filed a bugzilla report (#146372) at RedHat. You might want to
>> check it out and join in.
>>
>> Regards.
>>
>> John
>>
>> PS Apologize for the off-list e-mail. I picked off your e-mail address
>> and my bug report number --- and nothing more --- before switching
>> computers.
>>
>>
> NP.
>
> For continuity, I'll get it into the thread on the list
>

.. And there it is.