em(4) problems.

[Scott Long]

Søren Schmidt wrote:
> Petri Helenius wrote:
> 
>> I´m highly confident that this is a case of integrated "CSA" ethernet 
>> with broken BIOS. I suspect you get an message about that when booting.
> 
> 
> Nope. no messages to that effect, oh and it works in windows(tm)...
> 
> The last thing I see if I try to use em0 is:
> em0: Link is up 100 Mbps Full Duplex
> and then the system locks up hard.
> 

I'm looking a t a similar system right now and it definitely looks like 
an interrupt routing problem, not a driver problem.  The interesting 
thing is that (with 5.2-current as of two days ago) disabling neither
ACPI nor APIC helps.  I guess that we might want to get John Baldwin
involved.

Scott