Date: Tue, 01 May 2007 15:45:45 -0700 From: "Kevin Oberman" <oberman@es.net> To: Andrew Thompson <thompsa@freebsd.org> Cc: acpi@freebsd.org Subject: Re: cpu.cx usage no longer available? Message-ID: <20070501224545.84C6945042@ptavv.es.net> In-Reply-To: Your message of "Wed, 02 May 2007 10:33:15 %2B1200." <20070501223315.GA95099@heff.fud.org.nz>
next in thread | previous in thread | raw e-mail | index | archive | help
--==_Exmh_1178059545_74438P Content-Type: text/plain; charset=us-ascii Content-Disposition: inline > Date: Wed, 2 May 2007 10:33:15 +1200 > From: Andrew Thompson <thompsa@freebsd.org> > > On Tue, May 01, 2007 at 03:13:38PM -0700, Kevin Oberman wrote: > > I just installed Hans Petter's new USB driver on my laptop and wanted to > > see if it still prevented the system from dropping into deeper sleep > > modes. In the past I was limited to C2 when USB was loaded. > > > > Now I see only hw.acpi.cpu.cx_lowest. cx_usage and cx_supported seem to > > be gone. > > > > I am running on a Pentium-M CPU, single core. > > > > Do I need to enable something to make these show up or is there another > > way to get this information? > > Its now a per-cpu setting, look at dev.cpu.0.cx_supported. Ahh, yes. I knew this at one time, but I had forgotten it. Looks like the man page is a bit out of date. If I get a few spare minutes I'll try to submit a patch. I am VERY pleased to see that Hans Petter's new USB drivers do allow the system to drop into C3! It will require a bit more testing, but I hope to be able to leave USB in my kernel without serious battery life impact. I have heard that the new USB drivers are unlikely to make it into V7.0 due to lack of testing. I really hope a few more people give it a whirl and report back on the results, good or bad, so that the drivers can either be fixed or added to current. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 --==_Exmh_1178059545_74438P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) Comment: Exmh version 2.5 06/03/2002 iD8DBQFGN8MZkn3rs5h7N1ERArB7AJ4nYpBfB+ZUOv6s6ZytzdpZIz+33ACdFD2L ExKaEp/X9dkSZI+VedoLMN8= =xPgv -----END PGP SIGNATURE----- --==_Exmh_1178059545_74438P--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070501224545.84C6945042>