[Vm-dev] [Cog] Funny thing about time

[Levente Uzonyi]

On Wed, 12 Jan 2011, Frank Shearar wrote:

>
> Yes, Windows like to set the CMOS clock to local time, and Linux likes to use 
> UTC.
>
> My brother recently ran into a similar problem with a FreeBSD machine running 
> as a guest inside a Windows host. He had to touch /etc/wall_cmos_clock to fix 
> it.
>
> From the adjkerntz man page:
>
> If the file /etc/wall_cmos_clock exists, it means that CMOS clock keeps local 
> time (MS-DOS and MS-Windows compatible mode).  If that file does not exist, 
> it means that the CMOS clock keeps UTC time.
>
> Maybe there's a similar Linux/Mac fix?

Yes, there is, but different linux distributions have different files 
IIRC. Btw, if you tell linux to assume that the hardware clock stores the 
local time, you'll still have problems after daylight saving related time 
changes, because both OSs will adjust the clock.


Levente

>
> frank
>
> On 2011/01/12 01:18, Chris Muller wrote:
>> 
>> Every time I jump back and forth from Windows to Linux on my primary
>> laptop, the clock is wrong...
>> 
>> On Tue, Jan 11, 2011 at 4:37 PM, Igor Stasenko<siguctua at gmail.com>  wrote:
>>> 
>>> Yesterday on my comp two separate running images are hung
>>> simultaneously, while i were doing something completely outside of
>>> them.
>>> 
>>> And now during reading  the sqUnixHeartBeat.c:
>>> 
>>>
>>>         /* The native clock may go backwards, e.g. due to NTP adjustments, 
>>> although
>>>          * why it can't avoid small backward steps itself, I don't know. 
>>> Simply
>>>          * ignore backward steps and wait until the clock catches up 
>>> again.  Of
>>>          * course this will cause problems if the clock is manually 
>>> adjusted.  To
>>>          * which the doctor says, "don't do that".
>>>          */
>>> 
>>> i start recalling that yesterday i adjusted clock back by 1 hour,
>>> because after installing a windoze in dual boot it was set it wrongly.
>>> 
>>> But of course it could be anything else :)
>>> 
>>> --
>>> Best regards,
>>> Igor Stasenko AKA sig.
>>> 
>> 
>> 
>
>