[Bug 206112] [rtwn] Under heavy load, "can't map mbuf (error 12)" arises

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Tue Jan 26 20:30:36 UTC 2016


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=206112

--- Comment #1 from Simone Mario Lombardo <evil.lombo at gmail.com> ---
A little strange news.

The issue seems arises when the laptop is booted after few hours of being shut
down and it's related to the performance issue I cited; I need to reboot the
machine twice (!) to get nice performance and not getting the error.

I have put three firmware reset in a row in the if_rtwn.c and doubled the wait
time before accessing to the registry after the reset and now the card is
usable after a fresh boot.

I'll test if it is sufficient to keep the wait state longer in the next days or
it needs a "triple" firmware reset.

Simone

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