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Old 12-15-2013, 03:52 PM
Lorenz092 Lorenz092 is offline
Join Date: Jan 2011
Location: Italy
Posts: 449

Originally Posted by stbi View Post
OK, then my "266000" value actually did nothing, and the CPU clock remained at 532 MHz. - No wonder that it worked...!

However, if only 200, 400 and 532 MHz are possible, then what does

echo "350000" > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate
in the of the LightROM do?

Anyway, I set my CPU to 400 MHz now: No channel swap so far.

It seems that it's not possible to set CPU clock to 400 MHz:
echo "userspace" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo "400000" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed > /mnt/media0/scaling_setspeed.txt
In the file "scaling_setspeed.txt" the value "532000" is written.
Only the values "200000" and "532000" can be set.
Carefully look at the file/parameter you are going to set with the first:
/cpufreq/ondemand/sampling_rate <- *sampling rate* not clock
This simply tells the system the "frequency" for sampling cpu load and act accordingly for the ondemand governor...

For the 400 MHz that is both interesting and strange, I should have a closer look at the kernel actually!

EDIT: could you please check if the same happens when backlight stays on? i.e. play music and set backlight always on
I think this could be due to a low power mode, but I might be wrong...In case we test!
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Last edited by Lorenz092; 12-15-2013 at 04:04 PM.
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