Prev: /dev/ataraid mirror channging channels
Next: Seeking recommendations for USB DAQ on Linux
From: Zhang Weiwu on 11 Apr 2008 07:24
Dear all

I got a notebook that run out of battery on the mother board. Which
means, every time it reboots, or shut down and start again, the system
time goes back about 100 years.

I can workaround this issue by running ntp client upon booting, but this
notebook I used to take it everywhere (I am a heavy traveler) and I
cannot connect to Internet in many situations. Manually adjust clock
every time is very troublesome too. The local repair center told me to
fix this I need to pay the price close to a new notebook computer to get
the motherboard replaced, because battery cannot be replaced separately.

I think there probably exist some sort of external system clock device?
That for example can be plugged in PCMCIA or USB slot, provide the
kernel the right time when kernel boots? If there are such device then I
can solve my problem. Otherwise I probably really need to spend a lot of
$$$.

I didn't get information of such a product by googling.
From: Zhang Weiwu on 11 Apr 2008 07:30
Zhang Weiwu �:
> I think there probably exist some sort of external system clock device?

I don't know if such device can provide exactly what I want and if it is
compatible with Linux kernel?
http://www.aladdin.com/hasp/time.aspx
Maybe I can find something kernel-compatible...
From: dillinger on 11 Apr 2008 10:41
Zhang Weiwu wrote:
> Dear all
>
> I got a notebook that run out of battery on the mother board. Which
> means, every time it reboots, or shut down and start again, the system
> time goes back about 100 years.
>
> I can workaround this issue by running ntp client upon booting, but this
> notebook I used to take it everywhere (I am a heavy traveler) and I
> cannot connect to Internet in many situations. Manually adjust clock
> every time is very troublesome too. The local repair center told me to
> fix this I need to pay the price close to a new notebook computer to get
> the motherboard replaced, because battery cannot be replaced separately.
>
> I think there probably exist some sort of external system clock device?
> That for example can be plugged in PCMCIA or USB slot, provide the
> kernel the right time when kernel boots? If there are such device then I
> can solve my problem. Otherwise I probably really need to spend a lot of
> $$$.
>
> I didn't get information of such a product by googling.

http://www.timetools.co.uk/atomic-clock/atomic-clock-sync.htm
http://www.atomic-clock.galleon.eu.com/atomic-clock/time/atomic-clock-sync.html

Should work, or google some more on ntp sync device.

Michel.
From: Zhang Weiwu on 11 Apr 2008 12:21
dillinger �:
> Zhang Weiwu wrote:
>> I think there probably exist some sort of external system clock device?
> http://www.timetools.co.uk/atomic-clock/atomic-clock-sync.htm
> http://www.atomic-clock.galleon.eu.com/atomic-clock/time/atomic-clock-sync.html
>
> Should work, or google some more on ntp sync device.
>
> Michel.

Hi, Nice idea! Thanks! But I think we don't have these radio time signal
services in China, and can I use that on the plane too? (I think not)
From: Jack Snodgrass on 11 Apr 2008 12:41
On Fri, 11 Apr 2008 19:24:48 +0800, Zhang Weiwu wrote:

> Dear all
>
> I got a notebook that run out of battery on the mother board. Which
> means, every time it reboots, or shut down and start again, the system
> time goes back about 100 years.
>
> I can workaround this issue by running ntp client upon booting, but this
> notebook I used to take it everywhere (I am a heavy traveler) and I
> cannot connect to Internet in many situations. Manually adjust clock
> every time is very troublesome too. The local repair center told me to
> fix this I need to pay the price close to a new notebook computer to get
> the motherboard replaced, because battery cannot be replaced separately.
>
> I think there probably exist some sort of external system clock device?
> That for example can be plugged in PCMCIA or USB slot, provide the
> kernel the right time when kernel boots? If there are such device then I
> can solve my problem. Otherwise I probably really need to spend a lot of
> $$$.
>
> I didn't get information of such a product by googling.

.... if you can't find a hardware approach... you could at least
setup a script that runs when you do a shutdown that touches a file
in something like
/var/tmp/last_time
and then have your startup scripts use that file to set the date.
You could do this via a script so that it would not be a manual
process... you'd loose time after each boot up... but you would
not loose lots and lots of time. When you boot up connected
to the internet... it would 'catch-up' to the current time...

just a thought.

jack





--
D.A.M. - Mothers Against Dyslexia

see http://www.jacksnodgrass.com for my contact info.

jack - Grapevine/Richardson
 |  Next  |  Last
Pages: 1 2
Prev: /dev/ataraid mirror channging channels
Next: Seeking recommendations for USB DAQ on Linux