Comment 44 for bug 1176577

Il 10/08/2014 12:01, Alexander Usyskin ha scritto:
> [ 25.216133] mei_me 0000:00:03.0: timer: connect/disconnect timeout.
> [ 25.216143] mei_me 0000:00:03.0: unexpected reset: dev_state = ENABLED
>
> Ok, dmesg looks good from mei driver point of view. Do you have network slowdown (or other problems that manifests with 3.8) with this kernel?

 From time to time, big file copy (hundreds of MB) hang, but it's a rare
event. For testing I've just copied a couple of files for a total of 3.5
GB with some speed issues. Speed was > 10 MB/s over a 100 mbps ethernet
for the major part of the transfer, then dropped down to 5 MB/s after ~2
GB (only for the bigger of the two files). I didn't investigate about
possible roles of the LAN switch, though.

> The resetting message as you have in log usually means that is some is wrong with FW/HW - mei driver not receiving reply in timely manner.
>
> To debug it future, you can enable dynamic debug for mei driver :
> echo -n 'module mei +lfp' > /sys/kernel/debug/dynamic_debug/control
> echo -n 'module mei_me +lfp' > /sys/kernel/debug/dynamic_debug/control
> and wait for next reset
>

Thanks for the info. Once I enable debug, what should I look for?

Thank you.
Aldo