Date: Wed, 05 Jul 2000 20:12:16 +0900 From: haro@tk.kubota.co.jp (Munehiro Matsuda) To: mark@grondar.za Cc: current@FreeBSD.ORG Subject: Re: randomdev and APM. Not working together? Message-ID: <20000705201216R.haro@tk.kubota.co.jp> In-Reply-To: <20000705145916I.haro@tk.kubota.co.jp> References: <20000701104544S.haro@tk.kubota.co.jp> <200007010649.IAA13685@grimreaper.grondar.za> <20000705145916I.haro@tk.kubota.co.jp>
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From: haro@tk.kubota.co.jp (Munehiro Matsuda)
Date: Wed, 05 Jul 2000 14:59:16 +0900
::::> If I use randomdev for ssh, then APM seem to have stopped working.
::::
::::This is wierd; I am running this randomdev on my Libretto, (I wrote
::::it there), and it and APM are both fine.
::::
::::> Am I doing something wrong?
::::
::::No - you are doing everything right.
::::
::::Can you do any debugging on this? Are you able perhaps to trace the
::::kernel and see where it fails?
::
::Ok. I'll see what I can do.
::
::BTW, I've taken a diff of dmesg output between randomdev loaded and
::unloaded. As you can see, (1)outcome of "Calibrating clock" differs
::and (2)device attaching order is some what different.
::
::I'll let you know, if I can find anthing.
[This mail is Bcc'ed to acpi-jp@jp.FreeBSD.org]
I think I found the problem, and being able to work around it.
But, I don't know how to realy fix it.
Here's summery of what was happening...
1. APM fails if randomdev_load="YES" in loader.conf and ACPI configured.
Some drivers' probe & attach order will change, if randomdev module
was loaded using loader.conf.
I have ACPI test driver (as of early May) and APM driver in my kernel,
that was affected by this change.
1)Randomdev NOT Loaded: Probe & attach will happen in the order -
(1)nxp0, (2)apm0, (3)acpi0 .....That's OK
2)Randomdev Loaded: Probe & attach will happen in the order -
(1)acpi0, (2)apm0, (3)nxp0 .....NG
Because acpi0 access the BIOS first, APM support in BIOS seems to
get turned off. :-(
If there's any way to statically set the probe & attach order, I would
like to know.
2. Work around was to include RANDMDEV in config file.
I disabled it, because it was panicing on shutdown.
That being fixed in rev1.5 of randmdev.c, I have a working system, again.
Thanks you,
Haro
=------------------------------------------------------------------------------
_ _ Munehiro (haro) Matsuda
-|- /_\ |_|_| Business Incubation Dept., Kubota Corp.
/|\ |_| |_|_| 1-3 Nihonbashi-Muromachi 3-Chome
Chuo-ku Tokyo 103-8310, Japan
Tel: +81-3-3245-3318 Fax: +81-3-3245-3315
Email: haro@kubota.co.jp
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