Bugzilla Bug 73652

Last week the system clock was off by several days, and I noticed that every
time i booted into Linux something drastic happened to the BIOS clock. 
Finally, I saw that /etc/adjtime looked wrong:
21272.101972 1102069756 0.000000
1102069626
LOCAL

The first value means that hwclock thinks my hardware clock drifts 5.9 hours
per day!

I assume that I have set the clock, and when stopping the clock service hwclock
has noticed that the harware clock was significantly off, and then created this
silly adjtime file, causing the trouble.

Suggestion: Either hwclock or /etc/init.d/clock should be fixed to contain a
sanity check.  If the calculated drift is greater than say a few minutes per
day, it is most likely that the clock has been set manually, and the old value
should be kept (or 0.0 should be used).


Reproducible: Didn't try
Steps to Reproduce:
1.
2.
3.




~>emerge info
Portage 2.0.51-r3 (default-linux/x86/2004.2, gcc-3.3.4,
glibc-2.3.4.20040808-r1,
2.6.9 i686)
=================================================================
System uname: 2.6.9 i686 Mobile Intel(R) Pentium(R) 4     CPU 3.06GHz
Gentoo Base System version 1.4.16
Autoconf: sys-devel/autoconf-2.59-r5
Automake: sys-devel/automake-1.8.5-r1
Binutils: sys-devel/binutils-2.15.90.0.1.1-r3
Headers:  sys-kernel/linux-headers-2.4.19-r1,sys-kernel/linux-headers-2.4.21-r1
Libtools: sys-devel/libtool-1.5.2-r7
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer -fprefetch-loop-arrays
-falign-functions=4"
CHOST="i686-pc-linux-gnu"
COMPILER=""
CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config
/usr/kde/3.1/share/config /usr/kde/3.2/share/config /usr/kde/3.3/env
/usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/share/config
/usr/lib/mozilla/defaults/pref /usr/share/config
/usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/
/usr/share/texmf/tex/generic/config/
/usr/share/texmf/tex/platex/config//usr/share/texmf/xdvi/ /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-O2 -march=pentium4 -pipe -fomit-frame-pointer -fprefetch-loop-arrays
-falign-functions=4"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms"
GENTOO_MIRRORS="http://trumpetti.atm.tut.fi/gentoo/
ftp://trumpetti.atm.tut.fi/gentoo/ ftp://ftp.rhnet.is/pub/gentoo/
ftp://gd.tuwien.ac.at/opsys/linux/gentoo/"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY=""
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="X Xaw3d aalib acpi alsa arts avi berkdb bitmap-fonts cdr crypt cups dga
directfb doc dvd emacs encode esd f77 fam flac foomaticdb fortran gdbm gif gpm
gtk gtk2 imagemagick imap imlib java jpeg kde libg++ libwww mad maildir mbox
mikmod motif mozilla mpeg mule ncurses nls noreiserfs oggvorbis opengl oss pam
pcmcia pdflib perl png pnp ppds python qt quicktime readline sdl slang speex
spellsse ssl svga tcltk tcpd tetex tiff truetype trusted usb wxwindows x86 xml2
xmms xv zlib"


~>etcat -v baselayout
[ Results for search key           : baselayout ]
[ Candidate applications found : 3 ]

 Only printing found installed programs.

*  sys-apps/baselayout :
        [  I] 1.9.4-r6 (0) OVERLAY
        [M~ ] 1.11.6-r1 (0) OVERLAY
        [M~ ] 1.11.7-r2 (0) OVERLAY

you might want to review the CLOCK_SYSTOHC variable

Could you be a little more specific, please.  I cannot find that variable in
any file under /etc, nor in hwclock's manpage.  What does it do?  Is it in the
stable baselayout (1.9.4-r6) , or is it part of the many improvements in the
unstabe one (1.11.7-r2)?

/Jakob

1.9.x isnt being updated anymore

read /etc/conf.d/clock in 1.11.x

i do have the same problem on a laptop after resume from a suspend to RAM.
interestingly this just happens for kernel >2.6.9-nitro2 (i.e. with
2.6.10-nitro2 and 2.6.10-nitro4). 

Obsolete bug, >=baselayout-1.11.x has configurable CLOCK_SYSTOHC in
/etc/conf.d/clock. Closing.