Comment # 35 on bug 1184817 from Takashi Iwai

Hmm, it still doesn't show any indication of such behavior from the kernel log
*at all* (except for the IRQ 9 warning that was already found in the previous
log).  That said, from the kernel perspective, everything is still normal.

I believe we need some more easier test case than heavy apps like Chrome or FF.
If the problem happens, can you check about the network reachability by some
other command-line tool?