[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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:

[[email protected] ~]# 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:
[[email protected] ~]# 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

[[email protected] ~]#
So setserial doesn't help troubleshoot this.

On the box with one serial port:
[[email protected] ~]# 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

[[email protected] ~]#
UART is a 16550A, and works.
   OK I do not have a manual about BIOS. If they have one I will get it!



--

	Karl F. Larsen, AKA K5DI
	Linux User
	#450462   http://counter.li.org.


[Index of Archives]     [Current Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Yosemite News]     [Yosemite Photos]     [KDE Users]     [Fedora Tools]     [Fedora Docs]
  Powered by Linux