[Voyage-linux] Clock Drift

[Robert]

Hi Jordi,

That's a great help, thank you! I'll give that a go and see how I get on :-D

Your wFrog sounds like an interesting project, do you do much work with Thermometers and Hygrometer hardware? If so I've got a little pet project on the go which I'd be interested to talk with you about! :-D

Rob

From: Jordi Puigsegur [mailto:jordi.puigsegur at gmail.com]
Sent: 26 February 2010 10:26
To: Robert
Cc: voyage-linux at list.voyage.hk
Subject: Re: [Voyage-linux] Clock Drift

I run into the same problems a couple of weeks ago. First I tried disabling mfgpt and it solved the problem but left the watchdog driver not funcional. Later on I undid this change, activated again mfgpt and installed adjtimex and ntp. My system is now working in perfect sync.

I've described this configuration in a wiki (http://code.google.com/p/wfrog/wiki/InstallOn_Alix3D2_voyageLinux0_6_2#Clock_sync). wfrog is the open source weather logger I'm running on the Alix 3D2.

Hope it helps!

Jordi.
2010/2/26 Robert <Robert at supporttime.com<mailto:Robert at supporttime.com>>
Hey Punky,

Thanks for getting back to me. So you're saying I have a choice between a working clock or a working watchdog, I can't have both?

Robert

-----Original Message-----
From: Punky Tse [mailto:punkytse at punknix.com<mailto:punkytse at punknix.com>]
Sent: 26 February 2010 02:48
To: Robert
Cc: 'voyage-linux at list.voyage.hk<mailto:voyage-linux at list.voyage.hk>'
Subject: Re: [Voyage-linux] Clock Drift

Hi Robert,

Disabling mfgpt will make geode watchdog driver no functional.
[   22.373287] geodewdt:  No timers were available

Regards,
Punky

Robert wrote:
> Hi Punky, Thierry,
>
> Thanks very much for that suggestion. Tell me, is there any downside to adding that boot parameter? is it likely to cause me other issues?
>
> Many thanks,
>
> Rob
> ________________________________________
> From: voyage-linux-bounces+robert=supporttime.com<http://supporttime.com>@list.voyage.hk<http://list.voyage.hk> [voyage-linux-bounces+robert=supporttime.com<http://supporttime.com>@list.voyage.hk<http://list.voyage.hk>] On Behalf Of Thierry MUSEUX - www.fwt.fr<http://www.fwt.fr> - [tm at fwt.fr<mailto:tm at fwt.fr>]
> Sent: 25 February 2010 16:58
> To: 'voyage-linux at list.voyage.hk<mailto:voyage-linux at list.voyage.hk>'
> Subject: RE: [Voyage-linux] Clock Drift
>
> Hi,
>
> I have put in /boot/grub/menu.lst
> kernel /vmlinuz root=LABEL=ROOT_FS  console=ttyS0,38400n8 nomfgpt
>
> and in /etc/crontab
> 15 * * * * root /usr/sbin/ntpdate 0.fr.pool.ntp.org<http://0.fr.pool.ntp.org> >> /dev/null 2>&1
>
> This solve the issue.
>
>
> Thierry Museux
> France Wireless Technologies
> www.fwt.fr<http://www.fwt.fr>
> msn: tm at fwt.fr<mailto:tm at fwt.fr>
> Tel: + 33 (0) 1 41 08 70 78
> Gsm: + 33 (0) 6 15 22 09 62
>
>
>
>
> -----Message d'origine-----
> De : voyage-linux-bounces+tm=fwt.fr<http://fwt.fr>@list.voyage.hk<http://list.voyage.hk>
> [mailto:voyage-linux-bounces+tm<mailto:voyage-linux-bounces%2Btm>=fwt.fr<http://fwt.fr>@list.voyage.hk<http://list.voyage.hk>] De la part de Roel
> Huybrechts
> Envoyé : jeudi 25 février 2010 17:40
> À : Robert
> Cc : voyage-linux at list.voyage.hk<mailto:voyage-linux at list.voyage.hk>
> Objet : Re: [Voyage-linux] Clock Drift
>
> Hi Rob,
>
> Op donderdag 25-02-2010 om 08:26 uur [tijdzone -0800], schreef Robert:
>
>> Hello Guys,
>>
>> I've got some pretty serious clock drift on all the ALIX 3d2 which we've
>>
> got. Seems that after even just a short period of running the time on the
> systems is quite out of sync with the real time.
>
>> Is this a common issue? We've had it for a long time but I've only
>>
> recently sat down and tried to find a solution to the problem. Is this
> hardware related? or something software related?
>
>> Appreciate any advice you can offer.
>>
>> Rob
>>
>
> I've experienced the same issue on the ALIX 2d2 boards here. I've been
> able to greatly reduce the drift by installing the adjtimex package.
>
> Hope this helps for you as well.
>
> Regards
>
> --
> Roel Huybrechts
>
> GPG  | 4096R/5E2DE374
>      | http://rulus.be/gpg
>
>
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