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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?
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I've already configured my serial ports in the file:
and the port that I want to reserve the IRQ for is configured as:
setserial /dev/ttyS4 port 0x3E0 uart 16550A irq 15 baud_base 9600
but it still doesn't work.
The thing is that if I boot up in Windows first (I have a dual boot system) and then restart the computer (without shutting it down) and boot up in Linux, then it finds the serial port and I can communicate through it. In my BIOS I've reserved IRQ 15 for ISA devices and in Windows I have bo problem with it. But every time I run Linux (without the above procedure with booting up in Windows first) the serial port isn't recognized. So I guess Linux does something with the BIOS reservation of the IRQ when I boot up the system, but what?
Thankful for any help 'cause this is driving me crazy!
Yes that's it, or at least the communication through the serial port works if I warm boot it from os to os. I don't know if that has to do with the reservation of the IRQ or not, but that's the final thing I could think of...
Any ideas about anything that could solve this problem would be very much appreciated!!