[mythtv-users] time loss...

Graeme Wilford gwilford at gmail.com
Sat Jul 9 10:46:27 EDT 2005

Try using a different clock source. Motherboards have several clock
generators and 2.6 kernels can use tsc, pit, cyclone or pmtmr. 2.4
used pit, early 2.6 kernels I tried used tsc and now they use pmtmr.
Some of the clock sources are affected by power-management on some

append 'clock=<clock src>' to the kernel commandline, where <clock
src> is one of the above.

Check kernel logs to see which one you're currently using:
[root at mythtv1 ~]# grep timesource /var/log/dmesg
Using pmtmr for high-res timesource


On 08/07/05, Michael Kimberlin <mtk9fc at admiral.umsl.edu> wrote:
> My mythtv box is losing time.  I get different output from hwclock and
> date...even a couple of seconds after syncing the two up.  It seems to get
> worse when a recording is happening.  I lose quite a bit of time (into the
> hours a day, on days that have more recordings).  Needless to say, this
> totally screws up my start and stop times.
> I read that syncing the hardware and system clock and then removing
> /etc/adjtime followed by a reboot would take care of this...and it seemed
> to.  But as soon as a recording started I was back in the same boat again.
> It's amazingly disappointing to come home to a show that started recording
> 15 minutes too late and pushes 15 into the next show...and it's everyday.
> ANY help would be greatly appreciated...
> Thanks,
> -michael
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> mythtv-users at mythtv.org
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Me at google

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