Date: Sun, 30 Aug 2020 00:57:26 -0600 From: Warner Losh <imp@bsdimp.com> To: Kurt Jaeger <pi@freebsd.org> Cc: "freebsd-arch@freebsd.org" <freebsd-arch@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: APM BIOS set to go in FreeBSD Message-ID: <CANCZdfr-X5XJDPk%2BQWwxOk2ShUaChP5t55YtG9YppqkFWrAdig@mail.gmail.com> In-Reply-To: <20200830063602.GT3539@home.opsec.eu> References: <CANCZdfpzpiAq-NrHRYSe0hS140Hk9rJ0jFVNe8VkH%2B8Sim1CRw@mail.gmail.com> <20200830063602.GT3539@home.opsec.eu>
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On Sun, Aug 30, 2020 at 12:36 AM Kurt Jaeger <pi@freebsd.org> wrote: > Hi! > > > APM BIOS support will likely be removed from FreeBSD for FreeBSD 13. This > > was once quite important for LAPTOP users. However, it is now no longer > > relevant. It stopped being supported around the time that ACPI started to > > be released for laptops. This was around the Pentium 200MHz laptop > > generation, give or take. ACPI was released in 1996 to replace APM, and > had > > largely done so by 2000. As such, this is 20-year obsolete technology. > > I think I still use it to this day for all my laptops to check > the battery status and put the laptop to sleep. > The commands I use are apm and zzz, and they still work. > Those commands don't invoke the APM BIOS. instead, they call into ACPI under the covers. Only really really old laptops from the 1990s still have that interface... > What would be replacement commands ? > I'd planned on keeping these commands alive. This is just the Advanced Power Management BIOS I plan on killing. These commands just call the old APM ioctls, which ACPI implements. I had no plans on killing those.... Just the APM BIOS support in the kernel because it does weird things that I'd like to retire. > > To that end, I'm looking for actual users of this APM that have used the > > technology successfully in FreeBSD 12.0 or newer. > > I can experiment and even can provide you remote access to laptops of that > kind. > You have Pentium 200 or slower machines with APM BIOS still in service? :) I can test the apm/zzz commands on my laptops... I often type those w/o thinking due to old muscle memory. Warner
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