About the sharing of IRQ 17, which is hardware (?), this machine also runs in Windows 7 (completely separate hard drive, not seen in Linux), and the modem works fine there. So would Ubuntu treat this differently than Windows 7? I'll look in a few minutes about if this is in the BIOS, don't think it's a separate card.
Also, since this is a confirmed bug, it probably happens on different systems, mobos, sound, etc. ? But since the boot line and the file info is different, how will I know how to undo the file effect at boot edit? " Dont worry about system boot upon GRUB_CMDLINE_LINUX... change. You can always play with kernel options at boot time and revert changes." Just to make sure, your modem is internal, with a built-in serial port of it's own? What IRQ is your modem on? What IRQ is your sound on? How do I check on "Kernel complains about "nobody cares IRQ 17"" ? Or is this something that might be hidden by the - GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" in the grub file? Maybe I should remove this line value "quiet splash"? "What I found most interesting is that IRQ 17 appears in /proc/interrupts only while using minicom. It should be there or missing all the time, AFAIK" - Any ideas on how to investigate this? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1087519 Title: Serial port ttyS4 doesn't work in 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1087519/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
