On May 19, 2013, at 8:21 PM, Alexey Dokuchaev wrote: > On Thu, Feb 21, 2013 at 06:49:12AM +0000, Alexey Dokuchaev wrote: >> On Thu, Feb 21, 2013 at 06:38:24AM +0000, Warner Losh wrote: >>> New Revision: 247086 >>> URL: http://svnweb.freebsd.org/changeset/base/247086 >>> >>> Log: >>> Correct comment about use of pmtimer, and the real reason it isn't >>> used or desirable for amd64. >> >> Thanks! >> >>> + * pmtimer is used only with the old APM power management, and not with >>> + * acpi, which is required for amd64, so skip it in that case. >> >> Does it also mean it should be removed from ACPI-driven i386 machines kernel >> configs? > > Apparently not: I've been running FreeBSD 8.4-PRERELEASE without pmtimer for > a while, and noticed that my laptop stops keeping time during suspend. I've > never noticed that behavior before (presumably, with pmtimer). > > I've found this old thread [1] on -current@ from Jan 2001 where src/UPDATING > is quoted: > > The new pmtimer device is necessary for laptops. Failure to > include the device will cause suspended laptops losing time > when they resume. > > I will soon rebuild the kernel and put pmtimer back to see it fixes time > keeping for me. If it will, apparently it is still useful for i386, and > not just for APM, but ACPI as well...
It fights ACPI in what it does... It was needed for APM... Let me know how it turns out... Warner > ./danfe > > [1] http://www.mail-archive.com/freebsd-current@freebsd.org/msg23642.html _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
