COM port IRQForum: Networking Topic: COM port IRQ started by: ginasas Posted by ginasas on Jan. 24 2007,19:52
Hi. I have problem with com ports. Com1 and com2 work ok, com3 and com4 no. I think I need to change IRQ . In BIOS I have: COM1 3F8/IRQ4 WORK OK COM2 2F8/IRQ3 WORK OK COM3 3E8/IRQ10 DON'T WORK!!! COM4 2E8/IRQ11 DON'T WORK!!! how can I configure IRQ for com ports? Posted by roberts on Jan. 24 2007,20:46
irq 10 & 11 are frequently used. Check your machine withdmesg | grep -i irq Perhaps reserve them in your BIOS. Posted by ginasas on Jan. 24 2007,21:57
With dmesg command I see:<6>ttyS00 at 0x03f8 (irq = 4) is a 16550A <6>ttyS01 at 0x02f8 (irq = 3) is a 16550A <6>ttyS02 at 0x03e8 (irq = 4) is a 16550A <6>ttyS03 at 0x02e8 (irq = 3) is a 16550A So, I need to change ttyS02 at 0x03e8 (irq = 4) to ttyS02 at 0x03e8 (irq = 10) and ttyS03 at 0x02e8 (irq = 3) to ttyS02 at 0x02e8 (irq = 11) In bios I can't change IRQ, disable com port only. How can I change IRQ in DSL?? thanks. |