On Wed, 1 Nov 2006, Adrian Bunk wrote: > > Subject : Thinkpad R50p: boot fail with (lapic && on_battery) > References : http://lkml.org/lkml/2006/10/31/333 > Submitter : Ernst Herzberg <earny at net4u.de> > Status : submitter was asked to bisect > > It seems to be completely unrelated (except that it's also a ThinkPad), > but it might be worth a try whether a (non-SMP) kernel without APIC > support fixes the issues after resume. > > Hugh, your laptop seems to be a non-SMP laptop. That's right. > Do you have APIC enabled, and if yes does disabling help? Yes, I do. But I've just tried booting with "noapic" and with "nolapic" and with "noapic nolapic", but none of those make any difference. (That is, they make no difference to the FnF4-ineffective-after-resume behaviour that I'm finding fairly easy to reproduce at will today on 2.6.19-rc4; whereas yesterday it was seeming to me that -rc4 was much better than -rc3 in this regard. Something I have learnt today is that the key is ineffective "for a while", but may become effective later. It's conceivable that the behaviour I'm reproducing today is not quite the same as what I was experiencing earlier with real-life suspends.) More to the point, with great hope in my heart, I've tried backing out Andi's git-cf4c6a2f27f5db810b69dcb1da7f194489e8ff88.patch to arch/i386/kernel/io_apic.c, the one which Michael and Linus have homed in on. But sadly that makes no difference for me: I'd better get down to my own bisection. Hugh
