[mythtv-users] Occasional hard freezes

Michael T. Dean mtdean at thirdcontact.com
Sat Oct 29 15:20:35 EDT 2005


Ryan Steffes wrote:

> Changing to acpi=off did not fix the problem. I'm a little concerned 
> with whether it's really off though, it seems to turn on local apic 
> before reading the kernel options:
>
> Oct 29 08:56:54 mythtv kernel: Found and enabled local APIC!
> Oct 29 08:56:54 mythtv kernel: Initializing CPU#0
> Oct 29 08:56:54 mythtv kernel: Kernel command line: auto 
> BOOT_IMAGE=MythTV ro root=341 acpi=off noapic nolapic resume=/dev/hdb3 
> splash=silent
> Oct 29 08:56:54 mythtv kernel: bootsplash: silent mode.
>
> Later, it does say:
>
> Oct 29 08:56:54 mythtv kernel: PCI: PCI BIOS revision 2.10 entry at 
> 0xfbe50, last bus=2
> Oct 29 08:56:54 mythtv kernel: PCI: Using configuration type 1
> Oct 29 08:56:54 mythtv kernel: mtrr: v2.0 (20020519)
> Oct 29 08:56:54 mythtv kernel: ACPI: Subsystem revision 20050211
> Oct 29 08:56:54 mythtv kernel: ACPI: Interpreter disabled.
> Oct 29 08:56:54 mythtv kernel: Linux Plug and Play Support v0.97 (c) 
> Adam Belay
> Oct 29 08:56:54 mythtv kernel: pnp: PnP ACPI: disabled
> Oct 29 08:56:54 mythtv kernel: PnPBIOS: Disabled
> Oct 29 08:56:54 mythtv kernel: PCI: Probing PCI hardware
> Oct 29 08:56:54 mythtv kernel: PCI: Probing PCI hardware (bus 00)
> Oct 29 08:56:54 mythtv kernel: PCI: Using IRQ router default 
> [10de/01e0] at 0000:00:00.0
>
> but it doesn't say anything about local apic again.  How can I check 
> that it's really disabled?

If you have a relatively nice BIOS, it will enable you to disable ACPI, 
LAPIC, and possibly APIC.  Try that in addition to the kernel params.

Mike


More information about the mythtv-users mailing list