Re: e1000e: NIC not working, power management issue?

On Wed, 2011-09-21 at 02:40 -0700, Jeff Kirsher wrote:

On Tue, 2011-09-20 at 12:03 -0700, Frederik Himpe wrote:

quoted

On Sun, 2011-09-18 at 18:04 +0200, Frederik Himpe wrote:

quoted

On Sun, 2011-09-18 at 17:38 +0200, Frederik Himpe wrote:

quoted

I also tried some older Debian kernels and 2.6.34-1~experimental.2 is
working fine, while 2.6.35-1~experimental.3 (and later kernels I tried)
is broken, so I guess the problem started between 2.6.34 and 2.6.35.
Maybe I'll try to bisect now...

Apparently these old kernels do not build anymore with my recent
toolchain:

  AS      arch/x86/kernel/entry_64.o
/tmp/ccksyA7i.s: Assembler messages:
/tmp/ccksyA7i.s: Error: .size expression for do_hypervisor_callback does
not evaluate to a constant

So I'm stuck here.

Any further thing we can do to help this problem getting fixed?

You noted that the problem started between 2.6.34 and 2.6.35, and that
you were going to try and bisect to find the "problem" patch.  How is
that effort coming along?

I cannot successfully build these kernels with my toolchain (see above).

It also appears that you copied netdev and lkml on the original email,
but they appear to have been dropped from the CC earlier on in this
email discussion.  It sounds like it would be prudent to add lkml &
netdev back on to the email thread with what Jesse & John have suggested
and seen based on the information provided.  This way the power
management maintainers are aware of the issue and potentially suggest
other possible fix(es) that have not already been suggested.

Added these lists again.

To resume what we have found up to now: when runtime PM is activated for
the e1000e NIC, it does not wake up when a cable is plugged or when
ethtool is run. Runtime PM has to be deactivated to get the NIC working
again. Apparently this problem started between 2.6.34 and 2.6.35. 



-- 
Frederik Himpe [off-list ref]


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