The system has Windows 98 installed on it, Lycoris Amethst Desktop/LX Linux, & Kubuntu Edgy Eft Linux, each on their own hard drive partition. The modem works fine in W98 and Amethst Desktop/LX Linux, but it doesn't work in Kubuntu Edgy Eft Linux (which is the OS that I want it to work in because it is 3 yrs newer than the older version of Linux (i.e. Lycoris Amethst Desktop/LX is 3 yrs older than Kubuntu).
I originally posted in this forum because I thought it also discusses Linux systems. If I errored in my understanding, please let me know the url to the proper TechSpot forum?
As for the COM to IRQ port mapping.. Usually COM1 uses IRQ4, and COM2 uses IRQ3 and in the Linux world they map to /dev/ttyS3 & /dev/ttyS2, respectively. When the ports are shared, I think the mapping = COM1 uses IRQ1 or IRQ4 and COM2 uses IRQ2 or IRQ3.
I rechecked my configuration & the modem is using IRQ 4, so it is configured for COM1 use in W98 & /dev/ttyS2 use in Linux. Since the serial port & modem work perfectly in W98 & Lycoris Amethst Desktop/LX Linux, but not in Kubuntu, then it is obvious that the problem is in the Kubuntu software configuration somewhere. I just wish I knew what to do to get Kubuntu to recognize it properly too. I currently have both of the Linux systems configured identically & for some inexplicable reason kppp (the dialup dialer in Linux) doesn't work in Kubuntu.
As for being able to afford a newer computer.. that's not an issue. As for wanting to have & use this system longer.. that is definitely a correct assumption! It's a very well designed mother board & it has a great processor Intel Pentium II (don't laugh).. this thing rocks even with a later version of the Linux kernal (version 2.6.x. Why buy something new when this hardware is perfectly suitable and plenty fast enough to do the job?? It seems to me that the software is what's failing in this situation, unfortunately. And it isn't an incompatibility issue either. Linux has not dropped dialup support from their kernal for a 16550A UART modem.
As for being fair or not to ask this type of question.. Why do you think it isn't fair? Many people still use dialup service and more & more people are moving to Linux because of the low cost & reliability/stability it provides.
I don't understand your comment "But call your server". I guess you mean ISP?? If that is what you mean, then I don't see that as relevant. The problem isn't related to a dialup access number or a server issue. It's apparently a Kubuntu software anomaly of some kind, considering the serial port & modem work properly with my other OSes (W98 & Amethst Linux) & ISP.
Nonetheless, thx for your input.
cheers