Serial Port Bug? Solved
Karl Larsen
k5di at zianet.com
Wed Nov 28 21:34:09 UTC 2007
Karl Larsen wrote:
> Lamar Owen wrote:
>> On Wednesday 28 November 2007, Karl Larsen wrote:
>>
>>> Lamar Owen wrote:
>>>
>>>> Is the serial port enabled in the BIOS?
>>>>
>>
>>
>>> I have looked and found nothing in the many pages of BIOS things
>>> but
>>> I could of missed it.
>>>
>>
>> What model Biostar MB is this? All their manuals are online; older
>> ones especially included screenshots of the setup screens. Look for,
>> in the 'integrated peripherals' setup section the 'COM1' and 'COM2'
>> settings (the names might be different; I don't have a Biostar board
>> in front of me (got one at home, though, that I might put on the
>> breadboard and check out)).
>>
>>
>>> This is from #setserial -a /dev/ttyS0:
>>>
>>> [root at k5di ~]# setserial /dev/ttyS0 -a
>>> /dev/ttyS0, Line 0, UART: unknown, Port: 0x03f8, IRQ: 4
>>> Baud_base: 115200, close_delay: 50, divisor: 0
>>> closing_wait: 3000
>>> Flags: spd_normal skip_test auto_irq
>>>
>>
>>
>>> This I think is good.
>>>
>>
>> UART is unknown; no, this is bad. If the kernel can't detect the
>> type of UART (it will likely be 16550A or similar for virtually all
>> modern MB's) then it can't use the port.
>>
>> On my own laptop, which does not have ANY serial ports:
>> [root at localhost ~]# setserial /dev/ttyS0 -a
>> /dev/ttyS0, Line 0, UART: unknown, Port: 0x03f8, IRQ: 4
>> Baud_base: 115200, close_delay: 50, divisor: 0
>> closing_wait: 3000
>> Flags: spd_normal skip_test auto_irq
>>
>> [root at localhost ~]#
>> So setserial doesn't help troubleshoot this.
>>
>> On the box with one serial port:
>> [root at itadmin ~]# setserial /dev/ttyS0 -a
>> /dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4
>> Baud_base: 115200, close_delay: 50, divisor: 0
>> closing_wait: 3000
>> Flags: spd_normal skip_test
>>
>> [root at itadmin ~]#
>> UART is a 16550A, and works.
>>
> OK I do not have a manual about BIOS. If they have one I will get it!
>
>
>
I dropped to the Bios. Your telling me it is in Integrated
Periferals did the trick. I had to hit enter on one I never have before
and there was Serial Port 1 disabled! I got it set to auto and now it works!
I d/l the manual but it is a .exe file and I no windows to open it :-)
Thank You Lamar.
--
Karl F. Larsen, AKA K5DI
Linux User
#450462 http://counter.li.org.
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