17.10.2016 16:16, rishat пишет:
> setserial -g /dev/ttyS[0-4]
> /dev/ttyS0, UART: 16550A, Port: 0xa880, IRQ: 21
...
> 
> When I tried to manually type a "serial --speed=115200 --unit=0 --word=8
> --parity=no --stop=1" in the grub command line it complains that COM1
> port don't exist. I have played with unit and port attributes but
> without any luck.
> 

Does "serial --port=a880 ..." work? If not, what exactly happens?

Note that you may need to load at least PCI bus driver (insmod pci) for
this to work.

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