[mythtv-users] Occasional hard freezes

[Michael T. Dean]

Jason Werpy wrote:

>On 10/29/05, Ryan Steffes <rbsteffes at gmail.com> wrote:
>  
>
>>On 10/28/05, Michael T. Dean <mtdean at thirdcontact.com> wrote:
>>    
>>
>>>vi /usr/src/linux-`uname -r`/Documentation/kernel- parameters.txt
>>>
>>>...
>>>
>>>I think you were trying for "acpi=noirq noapic nolapic". And, it
>>>wouldn't hurt to throw in a "pci=noacpi" for good measure. Most of the
>>>'net gets these parameters wrong, though, so I realize you saw someone
>>>else recommend this...
>>>      
>>>
>>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?
>>    
>>
>You might also need the nolapci kernel parameter to turn off local apci, its
>separate from the main apci kernel parameters.
>  
>
Once again, I know you were just repeating something you've seen out 
there on the 'net, but as described in kernel-parameters.txt (as 
referenced above) there is no such parameter as "nolapci".  As a matter 
of fact, there is no (relevant) such thing as APCI or apci.  ACPI is 
Advanced Configuration and Power Management and APIC is Advanced 
Programmable Interrupt Controller.

Note, there's also no "nolacpi" parameter, and he's already using "nolapic".

Mike