maximilian attems wrote:
On Wed, Jan 09, 2008 at 09:42:15AM -0600, Lukasz Szybalski wrote:
maximilian attems wrote:
$ egrep NR_UARTS /boot/config-2.6.24-rc7-amd64
CONFIG_SERIAL_8250_NR_UARTS=16
$ egrep RUNTIME_UARTS /boot/config-2.6.24-rc7-amd64
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
This can be overridden with the module parameter "nr_uarts", or
boot-time parameter 8250.nr_uarts.
up to 16 evidently
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
I edited /boot/grub/menu.lst and change the following lines by adding
the 8250.nr_uarts=16 at the end of kernel option.
title Debian GNU/Linux,
kernel 2.6.18-5-686 root (hd0,1)
kernel /boot/vmlinuz-2.6.18-5-686 root=/dev/sda2 ro 8250.nr_uarts=16
initrd /boot/initrd.img-2.6.18-5-686
savedefault
that is _not_ the recommended way.
add the bootparam to koopt and run update-grub.
your setting above will be overwritten soon.
soon, as in in the next kernel upgrade or?
Now I've got:
Serial: 8250/16550 driver $Revision: 1.90 $ 16 ports, IRQ sharing enabled
Just for the my info. Is there a setting I could pass on boot time to
increase the max number of serial ports and then set my 8250.nr_uarts=16
to let say 20.
you start greeedy, the first question was to get 9 devices,
currently no.
Since the limit is 16 then why not go 16. Could you tell me the proper
exact way I should run the command. My knowledge on the kernel
parameters is limited.
I run it as root on a command line?
bootparam 8250.nr_uarts=16 ??
or?
Thanks,
Lucas
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