Set and fix clock issue

1. Edit /etc/timezone, for example set to Hong Kong:

Asia/Hong_Kong

Or, run:

dpkg-reconfigure tzdata

2. Copy the zone files /usr/share/zoneinfo/Asia/Hong_Kong from the build-box.

If using the kernel 2.6.26-486-voyage, or 2.6.30-voyage (Update: also for 2.6.38-voyage) and a ALIX board, the clock must be fixed.

1. add “clocksource=tsc” to kernel param:

kernel /vmlinuz root=LABEL=ROOT_FS console=ttyS0,38400n8 clocksource=tsc

2. sync time automatically with ntp daemon. Install ntp and edit /etc/ntp.conf:

driftfile /var/tmp/ntp.drift
...
broadcast 192.168.0.255

3. set time right ASAP, add rdate command in /etc/init.d/ntp:

...
case $1 in
        start)

                # use rdate to quickly set clock
                rdate -u -s stdtime.gov.hk

4. disable the hook scripts that interfere with the startup of ntp daemon:

• /etc/network/if-up.d/ntpdate
• /etc/dhcp/dhclient-exit-hooks.d/ntpdate
• /etc/dhcp/dhclient-exit-hooks.d/ntp

Compile a new kernel so that “clocksource=tsc” is not needed.