"Valerio Mariani wrote:" > > I confirm, this seems to be what is causing the problem on my Fedora > Core 5. If I turn off the service > > /etc/init.d/cpuspeed stop
I have experienced SMP faults on a system which is not using the ivtv driver. It has an ATI Wonder tuner card so it is using the bttv driver. The system is running Fedora core 5. I have a bug report into the kernel group: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=195769 I currently have the cpuspeed service turned off. > > and start the mythfrontend, I get no errors at all both in the frontend > output and in the output of dmesg (at least for the few minutes that I > tried. A few seconds were easily sufficient to see the errors before) > > Debian has no cpuspeed script in the /etc/init.d/ directory, but I don't > know if this feature is compiled in the kernel. Is there a way to tell > from the output of some command or from looking at the kernel > configuration file? > > The following information was asked in a previous post: > > The compiler that I used to compile ivtv on Debian is: > > gcc (GCC) 4.1.2 20060729 (prerelease) (Debian 4.1.1-10) > > On Fedora I got the same problem both with precompiled packages from > atrpms and compiling ivtv myself. In this latter case I used: > > gcc (GCC) 4.1.1 20060525 (Red Hat 4.1.1-1) > > Please let me know if you need me to run more test and provide more > information!! > > Thank you everyone for your help! > > Valerio > > > > > Simen Thoresen wrote: > > Hi Valerio, > > > > Altho I have not done any IVTV development work, I have been gathering > > a bit of data on this with the help of a few other list participants. > > If you still have both Debian and FC5 available, please compare > > powernow-support (cpu speed throttling) between them - either as > > kernel modules or built in. I've been running a longeish testseries > > here, and I'm pretty sure I never saw the DMA error before enabling > > the 'cpuspeed' service (it'll probably be called that on FC5, but I > > don't know how Debian implements this). Unfortunately, a simultanous > > CPU, kernel and ivtv -upgrade skewed my earlier impression a bit, but > > I'm pretty sure this is neither a kernel (including ivtv) -version nor > > an SMP issue. > > > > I've now been running close to a week with cpuspeed disabled and > > rather more grabbing than I normally do, and have yet to see a single > > error (with my previous schedule it seems to occur every two days or > > so with cpuspeed enabled). > > > > Yours, > > -S > > > _______________________________________________ > ivtv-users mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-users > _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
