[arch-general] DST and suspend

[Jan de Groot]

On Tue, 2009-03-10 at 20:24 -0600, Sergey Manucharian wrote:
> Hi folks,
> 
> I wonder if anybody else is experiencing such a problem.
> Here in USA the Daylight Saving time started from the last Sunday, and
> my box has switched the clock properly. But then I found that every time
> when I suspend my ThinkPad R61 and bring it back to life the clock is
> switched back to old winter time! I run ntpdate to fix it, and
> everything is fine until the laptop is suspended again.
> 
> Today I've updated tzdata and kernel - the same behaviour still
> persists...
> 
> Am I missing something?
> 
> Thanks for ideas.
> 
> Sergey

I guess the hardware clock isn't saved when doing suspend or hibernate.
When the system boots up, the clock is read from hardware, resulting in
your timeshift.
This is only an issue when your system time is stored in local time
instead of UTC.