On Sun, Oct 16, 2005 at 08:54:22PM -0500, Jeff Vian wrote: > On Sun, 2005-10-16 at 09:35 -0700, Ian MacGregor wrote: > > When I shutdown my computer, the system hangs while trying to set the > > hardware clock. This requires me to manually reset the power switch and, > > upon reboot, the time and date are wrong. I have set the correct date > > and time n the computer BOIS, so FC4 does not need to do this. How do I > > stop FC4 from setting the hardware clock to the OS time when shutting > > down or rebooting? I am thinking that this would solve the hanging > > problem upon shutdown/reboot. > > > > Ian M. > > > This may be a problem, but the HW clock needs set with shutdown because > it almost never is exactly accurate when the system has been running for > a while. In general, the time for the OS is set from the HW clock at > boot time, and the time for the HW is set from the OS at shutdown. An > actual hang here can imply a problem, but definitely says that the OS > and BIOS are not playing nice. Do you perchance have the BIOS set to > not allow it to be changed as some virus protection schemes do? If the > OS cannot write to the bios it presumable could cause a hang. > > The other real question otherwise is "Does it actually hang - forever - > during shutdown? or does it just take a long time and you get impatient > and power off without having it complete?" If the latter, try waiting > for a while to see if it will finish. If the former then it may > actually be a problem and may warrant looking at the bios virus > protection scheme as a start point. > > You say the date and time are wrong when you start up. That implies the > date and time are incorrect in BIOS or that you have the timezone set > wrong, so the date & time are actually correct but for a different time > zone. It may also be that you told the system the bios is set to UCT > when it is in fact set to local time, which would change the time in the > OS at startup. > However here is the mystery to me. The system clock is set from the hardware clock at boot by running hwclock in /etc/rc.d/rc.sysinit. But I can't find where the hwclock is run at shutdown. That is the place to look for the problem. -- ------------------------------------------- Aaron Konstam Computer Science Trinity University telephone: (210)-999-7484
