Bug 155376

Summary:	System freezes in early bootup without "nolapic"
Product:	[openSUSE] SUSE Linux 10.1	Reporter:	Carl-Daniel Hailfinger <kernel01>
Component:	Kernel	Assignee:	Andreas Kleen <ak>
Status:	VERIFIED FIXED	QA Contact:	E-mail List <qa-bugs>
Severity:	Normal
Priority:	P5 - None	CC:	len.brown, suse-beta
Version:	Beta 6
Target Milestone:	---
Hardware:	i686
OS:	Other
Whiteboard:
Found By:	Development	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Attachments:	dmidecode info

Description Carl-Daniel Hailfinger 2006-03-06 11:02:48 UTC

My Samsung P35 laptop freezes after "ACPI: Subsystem revision 20060127" unless I specify nolapic. Kernels before 2.6.16-rc4 worked fine.

What info do you need?

Comment 1 Carl-Daniel Hailfinger 2006-03-06 11:03:43 UTC

Ah yes, adding noapic or apic to the kernel commandline has no effect.

Comment 2 Olaf Kirch 2006-03-06 14:16:57 UTC

Andi, this seems to be due to your APIC enablement change.

cadaha, could you please provide DMI info for your laptop?

Comment 3 Andreas Kleen 2006-03-06 16:44:53 UTC

need DMI info

Comment 4 Carl-Daniel Hailfinger 2006-03-06 21:55:53 UTC

Created attachment 71467 [details]
dmidecode info

Comment 5 Andreas Kleen 2006-03-06 22:12:00 UTC

Do you perhaps see a message like

  <4>Local APIC disabled by BIOS -- reenabling.
  <4>Found and enabled local APIC!

if yes then i just fixed your bug.

Comment 6 Andreas Kleen 2006-03-07 21:54:58 UTC

Anyways, I'm pretty confident it will be fixed in Beta7

Comment 7 Carl-Daniel Hailfinger 2006-03-08 13:15:44 UTC

Verified fixed in current kotd. Boot messages are:

DMI present.
APIC enabled because system is MP or new enough
ACPI: RSDP (v000 PTLTD                                 ) @ 0x000f6620
ACPI: RSDT (v001 PTLTD  CooperSp 0x06040000  LTP 0x00000000) @ 0x1ff76959
ACPI: FADT (v001 INTEL  ODEM     0x06040000 PTL  0x00000050) @ 0x1ff7bed2
ACPI: BOOT (v001 PTLTD  $SBFTBL$ 0x06040000  LTP 0x00000001) @ 0x1ff7bfd8
ACPI: SSDT (v001  INTEL  EISTRef 0x00000001 INTL 0x02002015) @ 0x1ff76989
ACPI: DSDT (v001 INTEL  ODEM     0x06040000 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0x1008
[...]
Local APIC disabled by BIOS -- you can enable it with "lapic"


Just one suggestion: remove the "APIC enabled because system is MP or new enough" printk if you don't enable the APIC.

Comment 8 Andreas Kleen 2006-03-08 13:24:26 UTC

That's too difficult - the DMI code doesn't have the BIOS information yet.
But I can change it to "APIC allowed".

Comment 9 Len Brown 2006-03-09 01:41:31 UTC

> APIC allowed

I vote for "IOAPIC allowed"

Comment 10 Andreas Kleen 2006-03-09 01:50:31 UTC

No because it covers the local APIC too