Is the RPI SD card clocking speed established at startup?

Hi,

My RPI crashes after a while....

1. Is the SD card clock speed "discovered" by RPI at start up by it trying to find the fastest clock which works or is this speed fixed?

2. Does the working maximum clock rate for an SD card drop as it warms up?

3. I note that cooling the RPI SD card but not the RPI from a crashed RPI with freezer spray seems to make it much more likely the RPI will reboot successfully.

Thanks,

Nick

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johnbeetem over 14 years ago

I've heard of people solving mysterious crashes by setting "vm.min_free_kbytes" to a larger value. For example, here is a RasPi forum thread I found by searching for "min_free_kbytes" on the raspberrypi.org front page: http://www.raspberrypi.org/phpBB3//viewtopic.php?f=71&t=11445&start=25.

I've never tried this myself.
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johnbeetem over 14 years ago

I've heard of people solving mysterious crashes by setting "vm.min_free_kbytes" to a larger value. For example, here is a RasPi forum thread I found by searching for "min_free_kbytes" on the raspberrypi.org front page: http://www.raspberrypi.org/phpBB3//viewtopic.php?f=71&t=11445&start=25.

I've never tried this myself.
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