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FS#8522 - Skipping multiple tracks (sometimes) freezes playback

Attached to Project: Rockbox
Opened by Harold Van (hsvsunshyn) - Sunday, 27 January 2008, 17:30 GMT
Last edited by Steve Bavin (pondlife) - Monday, 17 March 2008, 17:41 GMT
Task Type Bugs
Category Music playback
Status Closed
Assigned To No-one
Operating System iPod 5G
Severity Low
Priority Normal
Reported Version Daily build (which?)
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No


I have had a 5.5G 80GB ipod with rockbox (currently r15884-071206)on it for a month or so.

I have noticed that sometimes when I skip multiple tracks (as few as two, or sometimes it takes more than 10 or 15) playback will freeze. Switching between play and pause does not help (although the icon switches between play and pause). Waiting also does not help: I can leave it frozen for five minutes and it will not recover on its own.

Stopping playback (by holding down the play/pause button) then resuming playback (by clicking the play/pause button) does fix the problem, and starts playing at the beginning of the track that playback had frozen on.

This problem happens across a large variety of mp3s.

This should probably be counted as a low priority, since the workaround is so trivial...
This task depends upon

Closed by  Steve Bavin (pondlife)
Monday, 17 March 2008, 17:41 GMT
Reason for closing:  Fixed
Additional comments about closing:  Freezing is fixed.
2008-03-17: A request to re-open the task has been made. Reason for request: Sorry it took so long for me to comment again, I have been travelling for the last two weeks. I have just put r16685-080317 on my iPod and the problem still occurs. Skipping 10 tracks still freezes playback. I have waited up to 15 minutes to see if it is a slow buffer problem, but playback never unfreezes on its own. Stopping then resuming playback does work, though.
Comment by Harold Van (hsvsunshyn) - Sunday, 27 January 2008, 17:56 GMT
As a bad troubleshooter, I failed to try a newer build of Rockbox. As a good troubleshooter, I have just installed r16176-080127 and duplicated the problem with today's build.
Comment by Harold Van (hsvsunshyn) - Tuesday, 12 February 2008, 12:12 GMT
I tried r16290 (mostly for the powersaving improvements), but problem still persists.

Is anyone else having this problem? I seem to have this problem on short as well as long playlists, and nothing I change fixes it. If I am the only one affected by this problem, then it must be something that I am doing or something unique about my setup/iPod...
Comment by Clément Pit--Claudel (CFP) - Saturday, 16 February 2008, 19:14 GMT
Similar problem on Gigabeat F (r16316), and also when moving to previous track when playing the beginning of a song.
Comment by Matthias Kraus (DerSarek) - Monday, 18 February 2008, 09:54 GMT
I have the same problem on my Sansa e280.
Comment by Enno (onkel_enno) - Tuesday, 19 February 2008, 08:37 GMT
The same Problem here (e280).
Seems to happen if I skip Tracks while the audio buffer is still on filling, but I'm not sure.
Comment by Clément Pit--Claudel (CFP) - Tuesday, 19 February 2008, 17:32 GMT
Tried to reproduce the problem : On gigabeat, to get the error, do the following :
1. Play a music file
2. Skip 3/4 tracks, at any time in the file.

I guess the problem is liking to the buffer getting confused with which track to load.
Comment by Harold Van (hsvsunshyn) - Tuesday, 19 February 2008, 18:48 GMT
Additionally, I have caught this error message sometimes: "Error accessing playlist file". I get this message when the playback has stopped, and I stop playback (by holding "play"). When this happens, Rockbox (or at least the UI) locks up and requires a reboot. (This may be a different problem... I am mentioning it here in case the problem is a playlist problem.)
Comment by Florin Popescu (florinp3) - Friday, 22 February 2008, 15:12 GMT
A friend is having the same problem on a Sansa e260.
Comment by Steve Bavin (pondlife) - Tuesday, 04 March 2008, 17:35 GMT
Is this fixed now?
Comment by Marc Guay (Marc_Guay) - Monday, 10 March 2008, 18:15 GMT
Just tried to reproduce this on a Sansa e200 w/ r16601 with mixed results. First attempt at skipping very quickly through a long playlist ended up playing a song properly, but displaying the wrong tag info. Further attempts didn't produce any problems. The freezing problem specifically seems to be fixed.