http://bugzilla.kernel.org/show_bug.cgi?id=13087





--- Comment #36 from Bruno <bonbon...@internet.lu>  2009-04-21 20:39:12 ---
Created an attachment (id=21072)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=21072)
Logs of multiple boots

I can confirm that disabling hpet on my system also makes the hang go away.

I have not noticed any other regression (with/without hpet=force). Only thing I
know since a long time is that local apic (which is disabled by BIOS and when
enabled with lapic cmdline option) causes S3 suspend/resume to fail. But this
one is most probably unrelated/offtopic. Adding lacpi cmdline option does not
change hang behavior either.

Attached netconsole produced log contains the following boot attemps (see also
headers in the log):
- According to comment #28 : boot with clocksource=hpet => hang
- Using patch for #25 -> hang
- Using patch for #25 and clocksource=hpet -> hang
- Using patch for #25 and hpet=force removed -> boots
- Using patch for #25 and patch for #29 but without hpet=force -> boots
- Using patch for #25 and patch for #29, with hpet=force -> hang
- Using patch for #25 and patch for #29, with hpet=force and lapic -> boots
- Using patch for #25 and patch for #29 but without hpet=force and with
  lapic -> boots

What remains to check is if using "hpet=force clocksource=hpet" boots properly
or hangs with troublesome commit reverted.

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