Hi, Just wanted to inform you that since turning off CPU Frequency scaling yesterday I haven't seen anymore this error:
ivtv0 warning: ENC: (0) DMA Error 0x0000000b But the corrupted video persists and while producing high CPU load the card crashed again with this errors: ivtv0 warning: ENC: REG_DMAXFER 2 wait failed ivtv0 warning: ENC: DMA still Pending while stopping capture! Michael Am 20.08.2006 um 22:39 schrieb Michael Zanetti: > Hello, > > I'm back home now. I just tried disabling CPU Frequency scaling > again. The machine is running now for about 3 hours. I haven't seen > any DMA error yet but I can see already artefacts and corrupted mpg > video. Usually this happens just before the DMA errors come up. Do > you have this behavior on your setups? Could someone with a working > setup please attach or upload a kernel config file? I hope I can find > out some more settings that cause this problem. > > Michael > > > Am 20.08.2006 um 21:39 schrieb John Drescher: > >>> I've finally managed to reproduce the DMA error reliably and quickly >>> using the following shell script on my dual AMD: >>> >>> #!/bin/sh >>> cd /sys/devices/system/cpu >>> echo userspace >cpu0/cpufreq/scaling_governor >>> echo userspace >cpu1/cpufreq/scaling_governor >>> while true; do \ >>> echo 2200000 >cpu0/cpufreq/scaling_setspeed; \ >>> echo 2200000 >cpu1/cpufreq/scaling_setspeed; \ >>> sleep 0.3; \ >>> echo 1000000 >cpu0/cpufreq/scaling_setspeed; \ >>> echo 1000000 >cpu1/cpufreq/scaling_setspeed; \ >>> sleep 0.3; \ >>> done >>> >>> For some reason powernowd triggers the bug only very rarely, but >>> this >>> shell script is very effective. >>> >> Thanks for the script. I got "dmabug.sh: line 9: >> cpu0/cpufreq/scaling_setspeed: Permission denied" errors when I tried >> that as root so I guess I'll have to dig a little deaper into my >> kernel config to see why this is happening. >> >> John >> >> _______________________________________________ >> 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 > _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
