Support and General Use > Hardware
AGPTEK Rocker
wodz:
--- Quote from: pizza on June 26, 2018, 09:41:59 AM ---There's a click that happens ~3s after pausing playback. Its intensity is unaffected by the selected output volume. It's probably due to the codec's amp being powered down after a period of silence, most likely by logic in the kernel's driver. Changing the output port to something other than '2' (ie headphone) produces an immediate click/pop, so that approach won't work either.
So we're basically boned without the kernel sources (or the ability to roll our own..) Has anyone attempted to get them from AGPtek or Benjie? EDIT: Saw that neither is cooperating. A pity.
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I tried on my player and I don't get any pop. Do you happen to use very sensitve headphones?
wodz:
--- Quote from: pizza on June 25, 2018, 09:01:19 AM --- * Holding down select when plugging it into a PC still results in the SD card being remotely mounted/accessible, even while rockbox is still actively playing. This causes ...problems.
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I guess this is with ADB enabled in bootloader. Try without enabling adb and report back if you still see this.
speachy:
--- Quote from: wodz on June 28, 2018, 04:11:03 AM ---I tried on my player and I don't get any pop. Do you happen to use very sensitve headphones?
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Dunno about "very sensitive" -- they're just a random pair of earbuds I got with a cell phone a few years ago. The pop is also quite audible when plugged into my car's line input. (I have the output gain set to '1' in my builds, but that didn't seem to make an appreciable difference...)
--- Quote from: wodz on June 28, 2018, 05:53:46 AM ---I guess this is with ADB enabled in bootloader. Try without enabling adb and report back if you still see this.
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I'm seeing inconsistent results. The last time I tried this I had adb on, and the PC didn't try to mount anything.
Dulus_No:
--- Quote from: wodz on June 28, 2018, 04:11:03 AM ---I tried on my player and I don't get any pop. Do you happen to use very sensitve headphones?
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I hear a pop after pause only on right channel. My headphones are iSK HP2011 (32 Ohm, 94±3dB sensitivity), Zero Audio Carbo Tenore (16 Ohm, 102dB) and Alwup UPC630 (16 Ohm, 110dB - audible noise floor on silent parts of music and on pause before pop; setting gain from 3 to 0 helps a little bit with noise).
Latest build 8742f6f made pause on headphone unplug work but it pauses after ~1 second late.
speachy:
--- Quote from: Dulus_No on June 28, 2018, 06:21:08 AM ---setting gain from 3 to 0 helps a little bit with noise
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A couple of days ago I was interactively mucking with the gain settings (using amixer via adb) and it looked like only the values 1-7 had any effect -- eg set it to 7, then set it to 0, and the output doesn't change, but setting it to 1 had an immediate effect. Can you see if this is the case for you as well?
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