USB ports on Lenovo T400 do not work after a suspend/resume

[Ian Smith]

On Sun, 7 Jul 2013 18:47:03 -0700, Adrian Chadd wrote:
 > On 7 July 2013 13:49, Lars Engels <lars.engels at 0x20.net> wrote:
 > > On Sun, Jun 30, 2013 at 03:02:57PM -0700, Adrian Chadd wrote:
 > >> On 30 June 2013 07:22, Ian Smith <smithi at nimnet.asn.au> wrote:
 > >>
 > >> > After removing [numbers] (for WITNESS?), diff started making sense.
 > >> > The below is between the first and second suspend/resume cycles in
 > >> > dmesg-3.txt, encompassing the others.
 > >>
 > >> Cool!
 > >>
 > >> > Nothing of note that I can see, if that usb hub-to-bus remapping is
 > >> > normal.  As you said, 'CPU0: local APIC error 0x40' looks maybe sus.
 > >> > Maybe someone who knows might comment on that?
 > >> >
 > >> > Just checking: you've tried other USB devices apart from uftdi0?
 > >>
 > >> Yup, there's no 5v on the port.
 > >
 > > Oh, BTW: can you check if you have power on the ports after the first
 > > resume and no power after all next resumes until you reboot your
 > > notebook?
 > > That's the situation I had and maybe it can lead to something. ;)

 > Nope, no power after first resume if i have nothing plugged in.
 > 
 > Why?

Checking one more point .. do the USB ports come up ok if you originally 
boot with nothing plugged in?  If so (or if not), does that local APIC 
error message appear the same then too?

cheers, Ian

PS OT: finally found a USB keyboard but I'd forgotten that my friend's 
machine is an SL500, not T500.  Moreover, because its keyboard+trackpad 
etc is non-working (internally disconnected), I have no way to resume it 
without the kbd (and the 9.1-R memstick) plugged in.  Even with kbd and 
memstick left in and using acpiconf -s3 it suspends ok but is hung after 
resume by dabbing power button; no screen and kbd is dead too - sorry, 
no help there.  OTOH my son just bought a refurb T430 ('doze 7, beats 8 
anyway) which I should get to play with a bit this week.