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List: rockbox-sf
Subject: %T#13166 Task opened by RDP: iRiver H300 ALAC codec crashing (CPU frequency switching)
From: Rockbox <tracker () rockbox ! org>
Date: 2018-12-28 15:19:54
Message-ID: 01830309425a11ea720ac99583ac5ad7 () www ! rockbox ! org
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A new Flyspray task has been opened. Details are below.
User who did this - Robert Palmer (RDP)
Attached to Project - Rockbox
Summary - iRiver H300 ALAC codec crashing (CPU frequency switching)
Task Type - Bugs
Category - Codecs
Status - Unconfirmed
Assigned To -
Operating System - Iriver H300 series
Severity - Low
Priority - Normal
Reported Version - Release 3.14
Due in Version - Undecided
Due Date - Undecided
Details - Please refer to forum post for full exchange: \
http://forums.rockbox.org/index.php/topic,52518.0.html
In summary playing ALAC will crash the unit, other codecs not as much. My reasoning \
is (as contained in the forum post):
Converting some of my ALAC collection to FLAC to test has given excellent results = \
no crashes. I am suspicious of the ALAC decoder; watching the VIEW BUFFERING THREAD \
there seems to be consistency:
OGG/MP3/FLAC/WAV: CPU Frequency goes up to 124 until pcm: becomes full, then drops to \
45mhz and pcm: hovers (it is always active) near the top of 100%. Upon track change \
the cycle starts again (124mhz until pcm: becomes full). I don't seem to get crashes.
ALAC: CPU Frequency goes up to 124 until pcm: becomes full, then drops to 45mhz and \
pcm: quickly goes down (takes about 2 seconds) to 75%, then cpu switches to 124mhz to \
get pcm: back up to 100%. This goes on constantly (cpu high - low cycle) while a \
single track/file is playing. I am now believing this cpu going up and down \
constantly gives me the crashes. Note on crashes: I don't know when they will happen, \
sometimes after a minute or two, sometime after 10 minutes , there is no pattern I \
can tell.
More information can be found at the following URL:
https://www.rockbox.org/tracker/task/13166
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