Subject: APM bugs!
To: None <port-i386@NetBSD.ORG>
From: Alicia da Conceicao <>
List: port-i386
Date: 12/19/1997 20:41:53
Greetings NetBSD users:

There seems to be some serious problems with (Advanced Power Management)
APM included in NetBSD 1.3.  Basically, after a computer wakes up from
sleep mode, any attempts to use the PCMCIA ethernet or PPP from a PCMCIA
modem card will cause the OS to completely crash.  (It freezes up
completely, interrupts and all, and must be rebooted.)  Anyways a simple
"ifconfig ep0 down" prior to sleep, and "ifconfig ep0 up" after sleep
added to the APM will allow one to use the PCMCIA ethernet after sleep
mode without any troubles.  However, I can't seem to find any way to use
PPP on the modem card after sleep mode without crashing the OS.  Does
anyone have any ideas?  (BTW, "ifconfig ppp0 down" will not prevent a
crash after sleep mode.)  Perhaps there is some way to shut down the
modem's TTY, or the PCMCIA card prior to sleeping?

     It seems to be quite pathetic to have to reboot my laptop ever time
I wish to use PPP, since I usually have to close the lid and leave it in
sleep mode (to conserve power) for transportation.

     I realize that it is too late to include any APM fixes into 1.3,
but I would appreciate if anyone has any work-arounds, suggestions, etc.
that might allow me to use PPP after sleep mode.

Thanks in advance.  Sincerely, Alicia.

PS. I am running NetBSD 1.3 on a Digital HiNote Ultra II laptop, with
	a 3Com 3C589D ethernet & a IBM 28.8Kbps International Data/Fax
	Modem PCMCIA cards.

PPS. As an aside, the only freely available irqs that I have available
	for my PCMCIA cards are: irq 10 (used by fax/modem) & irq 11
	(used by ethernet).  All others are being used by other
	devices, so I had to modify the PCMCIA code in the kernel to
	allow me to use irq 10.