Kernel Bug Tracker – Bug 2044
boot hang unless "nolapic" - hp pavilion ze4125
Last modified: 2004-08-13 19:40:39 UTC
Hardware Environment: HP Pavilion ze4125
kernel boot hangs on line "executing _Sta and_INI methods:...." on nb presario
Steps to reproduce: Boot with a 2.6.2 kernel with ACPI enabled. (and
APMdisabled) (Last known working is 2.4.20 and it does not work using 2.6.0
I have updated my bios to the most current (KA.M1.24). I did not see any
I will include my acpidmp.
Created attachment 2046 [details]
HP ZE4125 acpidmp (tz.gz)
Still does not work in 2.6.3rc2
did you enable lapic? we have some problems with both acpi and lapic enabled.
Sorry it took me so long to respond. Yes that worked. I can't adjust the cpu
freq, but I suspect that may not be possible on my laptop. I can not get
temprature and battery. If you have any clues on the cpu (Athlon XP) I would
love to hear them.
I meant to say, I CAN get the temperature and battery.
so this problem goes away with "nolapic"?
is "nolapic" still needed in 2.6.4?
That is correct. Using nolapic fixes the problem.
is nolapic still required on 2.6.5?
Created attachment 2681 [details]
test patch to not re-enable LAPIC if BIOS disabled it
please test this patch w/o any boot parameters and let me know
if 2.6.5 (or so) boots. There are several ways of enabling the LAPIC,
and this patch disable the technique where Linux enables the
LAPIC when the BIOS had it disabled. It might be that we always
want to do this when in ACPI mode.
*** This bug has been marked as a duplicate of 1269 ***
I applied the patch as suggested in your reply to me on the lkml (re: new laptop
woes), my hp pavillion ze4430us/slackware box boots fine w/ the patch applied to
either 2.6.5 or 2.6.6, although it still prints the ACPI: IRQ9 SCI: Level
Trigger. message that it hung on, and your statements:
LENB: NOT reenabling LAPIC
also printed, aside from that as far as I can tell, everything is working fine.
BUT it definatly boots ;]