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| R5D1 and time drifting http://forum.linhes.org/viewtopic.php?f=6&t=12034 |
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| Author: | timmayk [ Fri Oct 06, 2006 6:02 am ] |
| Post subject: | R5D1 and time drifting |
I have an Asus A7N8X-E Delux, which is notorious for being the time to drift. The time server that was installed suring setup didn't help, so I stopped it and tried to set up a crontab but that also doesn't seem to help. I tried to reinstall the time server thinking that maybe it got screwed up on install, but still no good. Does anyone have any ideas? The box works great except for that one problem... /tk |
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| Author: | mac [ Fri Oct 06, 2006 6:27 am ] |
| Post subject: | |
what are you puting in your crontab? I have this in mine: 1 0,6 * * * root ntpdate <stratum2 timeserver> And it works fine to keep the clock fron drifting. stratum 2 servers: http://www.eecis.udel.edu/~mills/ntp/clock2a.html Try setting the with ntpdate from the command line, does it work? |
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| Author: | ceenvee703 [ Fri Oct 06, 2006 6:52 am ] |
| Post subject: | Re: R5D1 and time drifting |
timmayk wrote: I have an Asus A7N8X-E Delux, which is notorious for being the time to drift.
Search the forum here for messages from "tjc" with the terms "time drift" (or try other search terms). He posted a year or two back on some lilo option that worked to solve the time drift. When I tried it it messed up one of my capture cards, but then removing it and rebooting fixed the drift. |
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| Author: | timmayk [ Fri Oct 06, 2006 7:25 am ] |
| Post subject: | |
mac wrote: what are you puting in your crontab? I have this in mine: 1 0,6 * * * root ntpdate <stratum2 timeserver> And it works fine to keep the clock fron drifting. Try setting the with ntpdate from the command line, does it work? Off the wiki (this is what I have): Code: su ntpdate ntp-3.vt.edu crontab -e 15 * * * * /usr/sbin/ntpdate ntp-3.vt.edu Quote: Try setting the with ntpdate from the command line, does it work? Yeah, that works, but, the drift is about one minute every 2 hours. I would need to exit out to the command line quite often to fix the problem. Code: 1 0,6 * * * root ntpdate <stratum2 timeserver>
what is this period you have synching it. i don't know much about linux coding and I'm learning as I go. |
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| Author: | timmayk [ Fri Oct 06, 2006 7:29 am ] |
| Post subject: | Re: R5D1 and time drifting |
ceenvee703 wrote: timmayk wrote: I have an Asus A7N8X-E Delux, which is notorious for being the time to drift. Search the forum here for messages from "tjc" with the terms "time drift" (or try other search terms). He posted a year or two back on some lilo option that worked to solve the time drift. When I tried it it messed up one of my capture cards, but then removing it and rebooting fixed the drift. i found this: badrelish wrote: I just went through this as well. Here's the fix:
Edit /etc/lilo.conf Find the "append" line and add " noapic noioapic" Save, run lilo, and reboot. That did it for me. If this is what you were referring to, I'll try it at home tonight. thanks for everyone's help... /tk |
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| Author: | tophee [ Fri Oct 06, 2006 8:30 am ] |
| Post subject: | |
From memory, the Asus board you're using has an NForce 2 chipset. This is a well documented problem. The easiest way I found to solve it is to turn OFF spectrum spread in the BIOS. The root of this is the Kernal is causing too many APIC signals (I think - from memory again) which is why the --noapic noioapic thing works. It solved my time drift on my abit board. edit-- That should be the FSB (front side bus) spread spectrum. -I've now had a chance to check. 
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| Author: | timmayk [ Fri Oct 06, 2006 11:26 am ] |
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tophee wrote: From memory, the Asus board you're using has an NForce 2 chipset. This is a well documented problem. The easiest way I found to solve it is to turn OFF spectrum spread in the BIOS.
The root of this is the Kernal is causing too many APIC signals (I think - from memory again) which is why the --noapic noioapic thing works. It solved my time drift on my abit board. edit-- That should be the FSB (front side bus) spread spectrum. -I've now had a chance to check. thanks, i'll try this out tonight |
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| Author: | mac [ Fri Oct 06, 2006 4:52 pm ] |
| Post subject: | |
Quote: what is this period you have synching it. i don't know much about linux coding and I'm learning as I go.
My crontab entry is for 1 minute after midnight and 1 minute after 6 am everyday. Do a "man 5 crontab" for what the fields are. (I have do this for long time and still have to look it up to remember) |
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| Author: | timmayk [ Sat Oct 07, 2006 5:43 pm ] |
| Post subject: | Re: R5D1 and time drifting |
timmayk wrote: i found this:
badrelish wrote: I just went through this as well. Here's the fix: Edit /etc/lilo.conf Find the "append" line and add " noapic noioapic" Save, run lilo, and reboot. That did it for me. /tk So, it seems to be keeping time. one thing to note is that the append line had another argument splash=silent. after adding the two other arguments, my system seems to lock up about once every couple hours sitting idle. I just tried removing this other value and will see if not having that helps. |
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| Author: | timmayk [ Mon Oct 09, 2006 10:13 am ] |
| Post subject: | |
everything seems ok. i'm gonna update the wiki for this. thanks for the help. |
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| Author: | ceenvee703 [ Wed Feb 14, 2007 7:53 am ] |
| Post subject: | |
I had to reboot my system yesterday due to my HD tuner card dying after tuning to a marginal signal-strength channel. After reboot, my system (running R5C7) had the problem of the racing clock yet again. Only discovered it this morning after seeing that all of yesterday's recordings included 5-10 minutes of the previous show's ending. It had gained about 20 minutes over the course of probably 12 hours. I've done the lilo append thing above, which if it acts as it's done in the past, will fix the time but kill a tuner card. I'll back out the lilo fixes, restart again, and the clock will be fine until some reboot in the future. EDIT: Well, last time I didn't edit the "splash=silent" out of lilo.conf. THIS time I did, and none of my tuner cards seem to have died (and the time is holding so far). |
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