* Myra Nelson <myra.nelson@xxxxxxxxxx> [31.07.2012 18:43]: > On Tue, Jul 31, 2012 at 6:39 AM, Jorge Almeida <jjalmeida@xxxxxxxxx> wrote: > > On Tue, Jul 31, 2012 at 12:16 PM, Tom Gundersen <teg@xxxxxxx> wrote: > >> On Tue, Jul 31, 2012 at 1:09 PM, Jorge Almeida <jjalmeida@xxxxxxxxx> wrote: > >>> Anybody knows how to make sure that the kernel will not mess with the hardware > >>> clock every 11 minutes? The proper way would be to use a kernel that doesn't > >>> try to do it, but I want to use Arch's standard kernel, which has > >>> CONFIG_GENERIC_CMOS_UPDATE=y. > >>> Maybe something in /proc? > >> > >> As far as I know the only thing that will trigger 11-minute-mode is > >> that an ntp client tells the kernel that it is running. > >> > > I found in http://www.mail-archive.com/questions@xxxxxxxxxxxxx/msg02172.html > > that "echo 0 > /proc/sys/kernel/time/rtc_update" would do it, but we don't > > have /proc/sys/kernel/time/. Maybe this info is outdated, or it requires the > > PPSkit patch... > > > > Thanks > > > > J.A. > > > This is interesting. My problem isn't every 11 minutes, it's spastic, > and it started somewhere in the 3.3 to 3.4 range. I'll look up and my > system time is off by a multiple of 11 minutes but sometimes up to an > hour and half. > > I've been working on the following assumptions: > > The problem was a bad cmos battery and waiting to get one ordered > Since it occurred more frequently coming out of suspension, it was > something to do with my s2ram setup. This is why I (mistakenly) tried > the uresume hook in my initramfs image. > > The problem was based on hangs during rcu updates. > I compiled a debugging kernel and seem to have a large number of them, > and I was getting a lot of [ tsc clocksource unstable ]. Not yet sure > if that's due to a buggy bios or a hardware problem. > > Looks like I've got some more research todo. > > Myra I'm not entirely sure, but I sometimes have skips when playing a video or audio file with mplayer (although the system is idle, no heavy cpu usage) but not if playing an audio file with mpd. Could this be caused by this? I do have ntp running...
