Rockbox

  • Status Closed
  • Percent Complete
    100%
  • Task Type Bugs
  • Category Music playback
  • Assigned To No-one
  • Operating System iPod Nano
  • Severity Low
  • Priority Very Low
  • Reported Version Release 3.8
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by msh - 2011-02-28
Last edited by Buschel - 2011-03-03

FS#11973 - ipod nano 1G loses sound after record mode is turned on and off

After record mode is turned on and off on nano 1G 3.8, afterwards there is no sound, unless player is turned off and on. A person @ IRC notified me that after 3.7 version had been made some change for nano’s recording mode, so I tried 3.7 - no problems, several times turned recording mode on, off and resumed playback and no sound loss.

Closed by  Buschel
2011-03-03 20:54
Reason for closing:  Fixed
Additional comments about closing:   Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407

Fixed with r29513, thanks to Martins for testing!

Buschel commented on 2011-02-28 19:38

I suspect r28341 to be the cause. This change implemented audiohw_set_monitor(bool) for WM8975.

Buschel commented on 2011-02-28 21:54

The failure seems to be caused by unbuffered writes to the WM8975 registers during initialization. The new implementation of audiohw_set_monitor() uses these buffers. In consequence the first call of audiohw_set_monitor() will disable the connection from DAC to mixer until the next restart.

   wm8975_v01.patch (3 KiB)
Buschel commented on 2011-03-03 20:51

New version v02 of the patch. - replace all wmcodec_write() with
remove unused code
add explicit register buffer size and check for out-of-bounds

   wm8975_v02.patch (9.1 KiB)

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