On Mon, 2009-05-25 at 05:20 +0800, H. Peter Anvin wrote: > Rafael J. Wysocki wrote: > > On Monday 18 May 2009, Chris Howie wrote: > >> Folks: > >> > >> I've been running 2.6.29.1 for some time and reported an issue to this > >> mailing list a while ago about the boot process. I believe I have now > >> nailed down the one factor that determines whether I see this issue. > >> > >> The problem arises only when booting or halting my laptop when there > >> is no power plugged in, e.g. the system is running on battery. > >> Sometime after init begins starting services I must hold down a key on > >> the keyboard to convince it to continue booting, otherwise it just > >> hangs. If the system is running on AC then it boots fine. This same > >> problem repeats itself during the halt process if running on battery. > >> > >> This also happens when resuming a suspend-to-disk image, after loading > >> the data from the hard drive, but before control is returned to > >> userspace. The keyboard has no effect on this hang, presumably > >> because the kernel is not listening to the keyboard at this point. > >> When this happens the only solution is to hold the power button and > >> boot normally instead. > >> > >> An issue like this is a serious usability problem for me. I am > >> neither a kernel developer nor hacker, my coding skills applying > >> mostly to userspace applications. If there is anything you need from > >> me to help diagnose this problem please let me know. > >> > >> I am not subscribed so please CC me on replies. > > > > Let's try to make your report a bit more visible (some CCs added). > > > > I presume it boots with "acpi=off"? How about using the following boot option? a. idle=poll b. nolapic_timer c. processor.max_cstate=1 If the box can be booted with the above option, please open a new bug at http://bugzilla.kernel.org/enter_bug.cgi?product=ACPI and attach the output of acpidump, lspci -xxx. Thanks. > > -hpa > _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
