On Thu, 24 Aug 2017 16:15:48 -0300, "R0me0 ***" wrote: > I have noticed the following behavior: > > > urtwn0: device timeout > > The system just hangs and hard reboot is needed.
That sounds similar to this bug: https://marc.info/?l=openbsd-bugs&m=150157788716680&w=2 Which was fixed in revision 1.30 of sys/dev/ic/rtwn.c: date: 2017/08/20 14:53:06; author: stsp; state: Exp; lines: +37 -34 Fix use of uninitialized variables during rtwn(4) I/Q calibration, which restored device registers from uninitialized memory after calibration. Bug was hinted at by clang which produced a non-working driver at -O2. The problem was eventually spotted by jsg@ with gcc 6.3.1.
