Re: system time has change while installing
On Wed, Jun 19, 2013 at 09:39:11PM +0200, Bas Wijnen wrote:
> On Wed, Jun 19, 2013 at 07:56:26PM +0100, Ben Hutchings wrote:
> > On Wed, Jun 19, 2013 at 09:12:37AM -0700, Steve Langasek wrote:
> > [...]
> > > The *only* argument for using local time in the system clock is so that the
> > > time displayed in the timezone-ignorant BIOS will be correct. But who looks
> > > at the time in the BIOS anyway?
> >
> > No, the major reason is compatibility with Windows on a dual-boot
> > system. But it will still get screwed up if Linux does the DST
> > adjustment.
> >
> > EFI apparently records the current time zone offset of the RTC,
> > which would allow this to be fixed, but I don't think that Linux
> > pays any attention to that yet.
>
> Actually, doing the DST adjustment in the OS without storing that it has been
> done in the BIOS will always fail.
[...]
Assuming you mean 'BIOS' in the common sense of 'PC firmware', the
time zone offset stored by EFI would include any offset for DST.
The historical problem on PCs has been that neither the RTC hardware
nor BIOS calls provided anywhere to store that information.
Ben.
--
Ben Hutchings
We get into the habit of living before acquiring the habit of thinking.
- Albert Camus
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