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Dom Cobley
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Dec 27, 2012
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Since this FW oc possibilities seems to be reduced :-( On 3.2.27 arm_freq=1000 / core_freq=450 / sdram_freq=450 / over_voltage=4 / initial_turbo=60) worked fine - same settings with 3.6.x no boot :-( Max bootable at 950 - any ideas ?
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Not really. I'd try adding boot_delay=5 in case it's an initial power surge type issue.
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Does over_voltage=6 help? Does arm_freq=1000 work with core_freq/sdram_freq at default?
Can you try a different power supply?
Can you confirm older firmware still works reliably with your settings?
You can revert to an older firmware with:
sudo rpi-update 38511116574740386594d5a97d9e02e899c6309_0
(remove the underscore)
and you can see the firmware hashes here: https://github.com/Hexxeh/rpi-firmware/commits/master.
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Interesting. That commit includes "Increase sdram frequency later to avoid a hang with overclocked sdram and force_turbo=1"
Where I had found sdram overclock was hanging on boot, and moving the initialisation improved it for me.
Perhaps it is more complicated than that.
For me it only occued with force_turbo=1 or initial_turbo=.
Does removing initial_turbo make new firmware work for you? Does removing sdram_freq make new firmware work for you?
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