> 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-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
