Peter Favrholdt writes: > Hi, > > Below some more info on my two systems: > > Mikael Pettersson wrote: > > I assume the PE1800 has some Intel chipset? Which one? ... > 0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev c2) > 0000:00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Bridge > (rev 02) ICH5. Should be decent enough. > > And the machine that does have problems, what chipset does it have? ... > 00:08.0 PCI bridge: nVidia Corporation nForce2 External PCI Bridge (rev a3) nForce2. Hmm.. > cat /proc/interrupts > CPU0 > 0: 79 XT-PIC-XT timer > 1: 2 XT-PIC-XT i8042 > 2: 0 XT-PIC-XT cascade > 5: 141710 XT-PIC-XT sk98lin > 6: 5 XT-PIC-XT floppy > 7: 35 XT-PIC-XT parport0 > 8: 1 XT-PIC-XT rtc > 9: 6 XT-PIC-XT acpi, ehci_hcd:usb1, ohci1394 > 10: 0 XT-PIC-XT MPU401 UART > 11: 27474 XT-PIC-XT libata, libata, ohci_hcd:usb3, > NVidia nForce2 > 12: 15057 XT-PIC-XT ohci_hcd:usb2 > 14: 23211 XT-PIC-XT ide0 > 15: 32805 XT-PIC-XT ide1 > NMI: 3911 > LOC: 917176 > ERR: 0 > > The promise card is sharing IRQ11 with usb, the other libata device, and > nForce2 (wonder what that is?) That "mystery" device makes me strongly suspect that you've loaded the binary-only nvidia drivers. If that's true, then the machine's problems may just as well be caused by that driver, not sata_promise. (We've seen that happen before.) > > I'm actually beginning to think there's some PCI compatibility breakage > > somewhere, as I too see sata_promise working fine in some machines but > > not in others. Alas, my knowledge of PCI tweakables is close to nil. > > I second that (although I'm really clueless about PCI). > > Could it be that at 3.0Gbps with 4 ports running at full speed > contention on the pci bus cause this behavior? This would explain why a > PCI-X port helps (or limiting to 1.5Gbps). Or maybe it is an NFORCE2 > issue... Or too many IRQ-handlers on the same IRQ... > > I wish I could do something more to help. Unfortunately it is almost > impossible for me to do tests on the Intel system (as it is a production > system) - though I might be able to try some things late at night in the > weekends ;-) > > Guess at this point it would be nice to be able to reproduce the > behavior on an Intel system... I can reproduce it on an Intel 440BX chipset machine with a PIII. However, that chipset, while very good in its day, is rather old now. I'll run some more tests this weekend on less ancient hardware. /Mikael - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
