Hi Gilles, Here is the full test result.
acpi=off -> works acpi=hf -> negative (Disables all of ACPI except just enough to enable Hyper Threading) pci=noacpi -> negative (Disables ACPI for IRQ routing and PCI scanning) acpi=noirq -> negative (Disables ACPI for IRQ routing) pnpacpi=off -> negative (Disables the ACPI component of the Linux Plug and Play code) noapic -> negative (Disables the IO-APIC for IRQ routing or PCI scanning) nolapic -> ***works*** (Disables the local APIC) This PC is to control a kuka-lwr arm, with a Orocos/Xenomai setup and using the Kuka FRI (Fast Research Interface, UDP /1~10 ms sampling times). What do you think of going ahead with acpi=off. I would like to hear your comments. Best, Gajan On 27 September 2010 23:00, Gilles Chanteperdrix <[email protected]> wrote: > Gajamohan Mohanarajah wrote: >> Hi Gilles, >> >> I tried your 3 suggestions. But no luck. >> I am attaching the config file for reference. >> The kernel base on this config file boots without any problem with the >> [nolapic] option (or the [acpi=off] option). >> (Ref:https://wiki.ubuntu.com/DebuggingACPI) >> But fails with [acpi=ht] option. >> >> Gajan >> >> I tried the following grub options too: >> acpi=off -> works fine >> acpi=ht -> doesn't work >> [according to https://wiki.ubuntu.com/DebuggingACPI : This means the >> issue is in the ACPI table parsing code itself, or perhaps the SMP >> code. ] > > Since the problem seems to be with IRQ routing, I would suggest > acpi=noirq > > According to the wiki you found. > > In fact, I would try all the options suggested to find the one which > works... > > -- > Gilles. > _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
