Hi, John. Althought I can't really help you with your particular problem, I think you might get some info from this link: <https://help.ubuntu.com/community/DialupModemHowto/Intel537EP> Regards, Carlos. 2008/11/14 John Lee <sowberry@xxxxxxxxx>: > First tried linux a few months ago. Want to run VMware 1.x for WinME > support, last supported in ubuntu 6.06, so installed from ubuntu.com > on old Dell P3. Low-end machine, so installed server as > easy minimal install (no X). > > Based on scanmodem output, I first tried > http://linmodems.technion.ac.il/packages/intel/Philippe.Vouters/intel-537EP_secure-2.60.80.0_2008_03_22.tar.bz2 > (seemed like latest available). Compiled and installed smoothly > (showed up in lsmod). cu -l /dev/modem results in "soft lockup on > CPU#0." setserial -agv /dev/modem returns garbage. /proc/interrupts > doesn't show anything for IRQ 3 (which should be the modem, based on > lspci). fwiw, nothing shows up for IRQ 4 either, which should be > COM1/ttyS0 (although setserial -agv /dev/ttyS0 looks ok). > > Saw warning against SMP on uniprocessor machine in > http://linmodems.technion.ac.il/packages/intel/Philippe.Vouters/Intel-Readme.txt, > and 2.6.15-51-server had SMP enabled by default, so downloaded > 2.6.15.7 from kernel.org (linux-source-2.6.15 somehow unavailable from > dapper repository), ran make config to disable SMP (see attached). > Rebuilt kernel does a little better, as now I see this in dmesg: > > [42949806.940000] sound disabled > [42949806.940000] Intel 537 card found > [42949836.380000] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 3 > [42949836.380000] PCI: setting IRQ 3 as level-triggered > [42949836.380000] ACPI: PCI Interrupt 0000:01:0a.0[A] -> Link [LNKC] > -> GSI 3 (level, low) -> IRQ 3 > [42949836.400000] 537: Loaded > > whereas before the last thing would be "Intel 537 card found." So it > seems to me that there is still a disconnect between the cpu and > driver. I tried passing irq=3 via /etc/modprobe.d/options, but got > unrecognized parameter error in dmesg. I tried pci=routeirq in grub, > but no difference. I saw reports of 537 failures in ubuntu edgy, so I > thought maybe I'd try a previous version (contemporary with dapper). > http://linmodems.technion.ac.il/packages/intel/Philippe.Vouters/intel-537EP_secure-2.60.80.1_16_07_2006.tgz > produced same results (soft lockup). I don't know what else to try. >