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Disk access

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amey01:
Hi,

My first post so please be kind - I've searched but can't find anything relating to this issue.

I've just downloaded Rockbox for a 60GB 5g iPod and love it! The only problem is that when I select music to play the Hard Disk is accessed continually.

Under the iPod firmware the disk would spin for about 10 seconds to fill the buffer then turn off.

Under Rockbox, the disk access light will flash on and off for at least a minute, but sometimes continually. If I press "Pause" then it will continue to spin for about 5 seconds then turn off. After pressing play again, all is well until the buffer runs out when the disk starts its continual access trick again until I press "Pause".

I downloaded on 15 July, but updated last night in case this was a bug that was solved.

Any way to stop this?

linuxstb:
What format music are you playing?

I've only experienced this behaviour when playing very high bitrate MP3 or AAC files - they take so much CPU to decode, that Rockbox can't keep up with filling the buffer at the same time, so the disk never spins down.

Also, are you using other CPU-intensive features such as the EQ?

amey01:
Well, I think you've got it.

Yes, I am using ALAC.

Yes, I am using the EQ, but only the LS filter and only below 30Hz.

Any way around this - short of listening to horrible compressed files?

safetydan:
The EQ is CPU intensive, though one band shouldn't be causing issues. Try disabling the software EQ and see if your disk issues go away. ALAC by itself shouldn't stress the CPU that much. Though I could be wrong on that.

Llorean:
ALAC is big though, so the files are going to be consumed from the buffer quickly. That combined with our relatively slow buffering speed probably means the buffer is filled quite often.

He could always watch the audio thread screen from the debug menu to see what's going on.

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