3 system hang, 16 references – Acer 3400LMI User Manual

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F8x86_64 on the Acer Ferrari 3400LMi

take care of business. Dialing and connecting works fine and the debug output
looks ok. However, when the session is disconnected the debug output goes

south. It will start to flood the console with the exact same messages as seen
above during a connect. In this case we may actually use the modem but need a

small tweak.
My temporary fix for the problem in this case is to restart the slmodemd service

right after disconnecting a session. I configure my dialup client, Kppp, to execute
/etc/init.d/slmodemd restart upon disconnect. Unarguable this is a really

dirty fix, but works quite well.

15.2.3 System hang

The issue reported above together with the fact that slmodemd runs with real
time priority by default may be devastating. When the modem daemon goes

insane it will hug your CPU and squeeze it all real hard.
If the daemon has realtime priority you will have a hard to get control over you

system again and a forced shutdown might be the only way out.

Note: You should always run slmodemd with the nortpriority option set.
Failing to do so might hang your entire system.

16 References

This document is a revised version of
FC4x86_64 on the Acer Ferrari 3400LMi

http://ferrari.databa.se/3400/fc4/

Below are the links I found most useful when I originally sat up

my Precious.

Thank you guys:
XStrikeForce/HowToRandR12 Debian Wiki