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#1 2009-01-23 07:33:05

kgas
Member
From: Qatar
Registered: 2008-11-08
Posts: 718

[SOLVED] IO APIC resources could be not be allocated and Clock issue

After the recent system upgrade to kernel version 2.6.28-ARCH, the first message during booting is
IO APIC resources could be not be allocated.

I read this post http://groups.google.com/group/linux.ke … c420?fwc=1

but I could not make it out to correct this problem. I run arch in Acer Travel mate 291LCi laptop (Intel Pentim M 1.4 GHz).
If any further information is needed I will post. Apart from this issue system is working fine. If any one has solved this issue I would like to know their solution. Thanks in advance

Edit: clock issue was removed. Is IO APIC ...  realted with single core cpu?

Last edited by kgas (2009-01-30 17:43:29)

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#2 2009-01-24 11:34:07

kgas
Member
From: Qatar
Registered: 2008-11-08
Posts: 718

Re: [SOLVED] IO APIC resources could be not be allocated and Clock issue

Is no one have this issue? Any help? I updated the kernel in Lenovo 3000 N 100 laptop and no such message. As I mentioned is it related with single core cpu? My google search still did not give me a satisfactory result.

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#3 2009-01-25 17:04:35

kgas
Member
From: Qatar
Registered: 2008-11-08
Posts: 718

Re: [SOLVED] IO APIC resources could be not be allocated and Clock issue

I did a slight modification to the boot menu even after getting APIC enabled the message is there

dmesg | grep apic
Kernel command line: root=/dev/sda2 ro vga=792 lapic=yes hpet=force quiet
--------------------------------------------------------------------------------------
dmesg | grep APIC
Local APIC disabled by BIOS -- reenabling.
Found and enabled local APIC!
IO APIC resources could be not be allocated.
---------------------------------------------------------------------------------------

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#4 2009-01-26 16:11:41

kgas
Member
From: Qatar
Registered: 2008-11-08
Posts: 718

Re: [SOLVED] IO APIC resources could be not be allocated and Clock issue

I want to share some more information on this. This may be helpful for new Linux users

These site give the details about APIC: http://osdev.berlios.de/pic.html &

http://www.on-time.com/rtos-32-docs/rtt … s/apic.htm    

This site helped me to read the details from  cat /proc/cpuinfo : http://www.paradicesoftware.com/specs/cpuid/index.htm

As per this  cpu got the on chip apic feature. Since I could not configure any thing on the Insyde BIOS. Will the BIOS upgrade be helpful?  Is there any one to have this message i.e, IO APIC .... during booting?

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#5 2009-01-26 17:10:36

Laertes
Member
From: Munich
Registered: 2007-04-08
Posts: 66

Re: [SOLVED] IO APIC resources could be not be allocated and Clock issue

Same issue here with a Pentium M 1.6 GHz. I guess the only effect of this error is to fall back to the pic mode:

cat /proc/interrupts
           CPU0       
  0:      37154    XT-PIC-XT        timer
  1:        701    XT-PIC-XT        i8042
  2:          0    XT-PIC-XT        cascade
  3:          1    XT-PIC-XT      
  5:          1    XT-PIC-XT      
  6:          0    XT-PIC-XT        wbsd
  7:          1    XT-PIC-XT      
  8:          1    XT-PIC-XT        rtc0
  9:         39    XT-PIC-XT        acpi
 10:      48315    XT-PIC-XT        ehci_hcd:usb1, ipw2200, uhci_hcd:usb2, uhci_hcd:usb3, uhci_hcd:usb4, yenta, Intel 82801DB-ICH4, eth0, radeon@pci:0000:01:00.0
 11:          2    XT-PIC-XT      
 12:        119    XT-PIC-XT        i8042
 14:      19081    XT-PIC-XT        ata_piix
 15:       3850    XT-PIC-XT        ata_piix
NMI:          0   Non-maskable interrupts
LOC:      30828   Local timer interrupts
RES:          0   Rescheduling interrupts
CAL:          0   Function call interrupts
TLB:          0   TLB shootdowns
TRM:          0   Thermal event interrupts
SPU:          0   Spurious interrupts
ERR:          0
MIS:          0

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#6 2009-01-30 17:42:25

kgas
Member
From: Qatar
Registered: 2008-11-08
Posts: 718

Re: [SOLVED] IO APIC resources could be not be allocated and Clock issue

I spend little more time and searching various forum and articles. I summarise the result here for reference

The Intel APIC Architecture is a system of Advanced Programmable Interrupt Controllers (APICs) designed by Intel for use in Symmetric Multi-Processor (SMP) computer systems. It was originally implemented by the Intel 82093AA and 82489DX, and is found in most x86 "SMP motherboards". It is one of several attempts to solve interrupt routing efficiency issues in multiprocessor computer systems.

In the said laptop

> dmesg | grep SMP
Linux version 2.6.28-ARCH (root@T-POWA-LX) (gcc version 4.3.3 (GCC) ) #1 SMP PREEMPT Sun Jan 25 10:13:11 UTC 2009
SMP: Allowing 1 CPUs, 0 hotplug CPUs
SMP alternatives: switching to UP code
Freeing SMP alternatives: 9k freed
SMP motherboard not detected.
SMP disabled

The conclusion is that the laptop mother board does not support SMP and hence APIC feature

further reading : http://lwn.net/1998/0205/io-apic.html : http://www.cs.uwaterloo.ca/~brecht/serv … finity.txt
http://www.cheesecake.org/sac/smp.html#booting  http://lkml.indiana.edu/hypermail/linux … /1648.html

In the same manner earlier I used to get "PAT WC disabled due to known CPU erratum." message during booting and got suppressed on further kernel updates. I hope in the same manner this message ie IO APIC ... can be suppressed in future kernel updates ie not to display the error in the console :-P

Thanks Laertes, your post made me to dig this issue further.

Edited for one more link addition. This clears all my doubt.

Last edited by kgas (2009-02-01 16:05:29)

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#7 2009-01-30 17:55:25

Ranguvar
Member
Registered: 2008-08-12
Posts: 2,544

Re: [SOLVED] IO APIC resources could be not be allocated and Clock issue

1.) Make sure that APIC is enabled in the BIOS, if you can find it there.
2.) Just add 'lapic' to the end of your Grub boot line, not 'lapic=yes' (might not make a difference). If your PC can do APIC, this will force it on.

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#8 2009-01-30 18:10:40

kgas
Member
From: Qatar
Registered: 2008-11-08
Posts: 718

Re: [SOLVED] IO APIC resources could be not be allocated and Clock issue

Hello Ranguvar , I just tried your option too but does not make any difference. I already mentioned about the BIOS, which does not have any option to change any of the parameter related to this issue and further discussion on this welcome. Thanks.

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