Rick Stevens wrote:
>Hmmm. S0, S2 and S3 are all on IRQ21 and using high port numbers, but
>S1 is in the normal spot for a COM2 or second serial port (port 0x2f8,
>IRQ3). Do you possibly have another device sharing IRQ3 or possibly
>port 0x2f8? Check /proc/ioports and any files under /proc/irq/3. Also
>check /var/log/messages and dmesg for any possible information.
In dmesg:
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a NS16550A
ACPI: PCI Interrupt 0000:07:01.0[A] -> GSI 22 (level, low) -> IRQ 21
0000:07:01.0: ttyS0 at I/O 0x1030 (irq = 21) is a 16550A
0000:07:01.0: ttyS2 at I/O 0x1028 (irq = 21) is a 16550A
0000:07:01.0: ttyS3 at I/O 0x1020 (irq = 21) is a 16550A
Couldn't register serial port 0000:07:01.0: -28
from /proc/ioports:
1000-1fff : PCI Bus #07
1000-100f : 0000:07:01.0
1010-1017 : 0000:07:01.0
1018-101f : 0000:07:01.0
1020-1027 : 0000:07:01.0
1020-1027 : serial
1028-102f : 0000:07:01.0
1028-102f : serial
1030-1037 : 0000:07:01.0
1030-1037 : serial
# ls /proc/irq/21
HDA Intel smp_affinity - contains 0000000c
# ls /proc/irq/3
smp_affinity - contains 0000000f
I'm aware there is a setserial command to enable multiport cards, but it
requires knowledge (i.e. mask values) I don't have.
David Scriven
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