How many serial ports does the Mint Kernel Support?

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Taffman
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How many serial ports does the Mint Kernel Support?

Postby Taffman » Wed Jan 23, 2013 7:39 am

Does anyone know how many serial ports the Mint 14 Kernel supports. I hear rumout thats it's no more than 4. I have an aftermarket 4 port serial card installed using ttyS5 -ttyS7. Only ttyS6 & ttyS7 work. All tty's on this board sharing the same irq = 19.

Code: Select all

/dev/ttyS0, UART: unknown, Port: 0x03f8, IRQ: 4
/dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
/dev/ttyS10, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS11, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS12, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS13, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS14, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS15, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS16, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS17, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS18, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS19, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4
/dev/ttyS20, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS21, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS22, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS23, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS24, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS25, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS26, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS27, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS28, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS29, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3
/dev/ttyS30, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS31, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS4, UART: 16550A, Port: 0xcc20, IRQ: 19
/dev/ttyS5, UART: 16550A, Port: 0xcc28, IRQ: 19
/dev/ttyS6, UART: 16550A, Port: 0xcc30, IRQ: 19
/dev/ttyS7, UART: 16550A, Port: 0xcc38, IRQ: 19
/dev/ttyS8, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS9, UART: unknown, Port: 0x0000, IRQ: 0
Linux Mint 17 Cinnamon 32-bit, Dell Dimension 9200, 4GB, 2.4GHz Core2, Radeon X1300

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Taffman
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Re: How many serial ports does the Mint Kernel Support?

Postby Taffman » Thu Jan 24, 2013 11:19 am

Anyone ??
Linux Mint 17 Cinnamon 32-bit, Dell Dimension 9200, 4GB, 2.4GHz Core2, Radeon X1300


AlbertP
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Re: How many serial ports does the Mint Kernel Support?

Postby AlbertP » Sun Jan 27, 2013 8:38 am

These how-to's are both quite old, so I don't think that will help anymore - the first one is about 90's ISA-style serial cards (and onboard serial ports of motherboards, which still work the same way) and not suitable for modern expansion cards which use PCI or PCI Express instead of an ISA or (onboard) LPC connection.

The card that you are using, is that a PCI card?

There is not such a limit to the number of serial ports as far as I know. The USB serial drivers support 256 devices according to the kernel documentation, so PCI drivers should be able to handle over 4 devices too.
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