Date: Mon, 2 Jun 2003 11:39:53 -0400 From: Rahul Siddharthan <rsidd@online.fr> To: "D. J. Bernstein" <djb@cr.yp.to> Cc: freebsd-mobile@freebsd.org Subject: Re: my thinkpad t40 experiences Message-ID: <20030602113953.A6216@online.fr> In-Reply-To: <20030601182528.71937.qmail@cr.yp.to>
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About suspend: I couldn't get it to work on my old laptop (a Compaq), either with linux or with FreeBSD, but standby (apm -Z in FreeBSD, apm -S in linux) worked fine provided I switched to a virtual console (ctrl-alt-f1) first. This was good enough for me but it's probably not good enough if you plan to keep your laptop that way for several hours without AC power. On my new laptop, there's no APM bios, only ACPI, so FreeBSD 4.x won't support any power management. FreeBSD 5.x doesn't work right (with ACPI disabled it doesn't boot fully, and with ACPI enabled it doesn't find the touchpad). You may have better luck though. It may be worth trying ACPI, I think many newer laptops don't have very functional APM BIOS's. With linux, I'm using the "software suspend" patch and it works fine for me so far; you may want to try it, after reading all the warnings. http://fchabaud.free.fr/English/default.php3?COUNT=3&FILE0=Tricks&FILE1=Laptop&FILE2=Swsusp I'm using the version for kernel 2.4.20 with acpi patches (from http://acpi.sf.net); there are more recent acpi patches for more recent kernels, you can find an "all-in-one" kernel with both the acpi patches and swsusp (I haven't tried it) at http://savannah.nongnu.org/projects/laptopkernel/ Rahul
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