Red Hat Bugzilla – Bug 193386
kernel boot freezes unless acpi=off
Last modified: 2007-11-30 17:11:34 EST
Description of problem:
The boot process freezes after having outputed the following line:
ACPI: Subsystem revision 20060127
Version-Release number of selected component (if applicable):
Hardware: ASUS Laptop S1300N
The same hardware had no ACPI problems in Fedora Core 4 with kernels < 2.6.16.
The FC-4 update kernels (>= 2.6.16) also have the same ACPI problems (boot freezes).
Right now the laptop has FC-5 but has ACPI disabled. To have ACPI (and sound
snd-intel8x0) I have to boot with a FC-4 kerel (< 2.6.16). Right now I use the
Is there a simple way to migrate the ACPI info from the FC-4 kernel into one
Created attachment 130111 [details]
dmesg | grep ACPI from the FC-4 kernel
Could you pass the full dmesg for the kernel that fails?
Also, could you try booting FC5 with 'nolapic' or 'noapic' bootup parameters?
(In reply to comment #3)
> Also, could you try booting FC5 with 'nolapic' or 'noapic' bootup parameters?
* booting with pci=noapic
kernel freezes after printing "ACPI: Subsystem revision 20060127"
* booting with nolapic
the machine boots
- with ACPI support
- with sound
- but without USB support (doesn't mount USB pens, doesn't load
my ADSL USB modem firmware)
Created attachment 130321 [details]
dmesg from kernel 2.6.16-1.2122_FC5 with option nolapic
Forgot to mention that the udev timeout during the boot process.
I have made at least three more boots with the nolapic option and haven't seen
the udev timeout again; everything appears to be working fine (including the USB
Closing ticket - nolapic resolved the problem.