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

Ian Smith smithi at nimnet.asn.au
Sun Jul 7 05:51:25 UTC 2013


On Sun, 30 Jun 2013 15:02:57 -0700, Adrian Chadd wrote:
 > On 30 June 2013 07:22, Ian Smith <smithi at nimnet.asn.au> wrote:
[..]
 > > 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?

Does noone know what that signifies?  Maybe it's not relevant to this.

 > > Just checking: you've tried other USB devices apart from uftdi0?
 > 
 > Yup, there's no 5v on the port.

I was rather taken aback to hear this.  Would not this indicate a 
failure to reinitialise the basic underlying USB hardware on resume?

More than a bit bemused, Ian


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