Rockbox Technical Forums

Support and General Use => Hardware => Topic started by: 1337 on January 11, 2019, 02:43:21 PM

Title: Clip+ error dc_writeback_callback
Post by: 1337 on January 11, 2019, 02:43:21 PM
Hi. Got a problem that appears periodically (like twice per week) on both stable 3.14 and latest builds.

something like:

*PANIC*
dc_writeback_callback ()
- Could not write sector
  xxxxx (error -3)  - always -3

Memory card - Transcend microSDHC UHS-I class 10 32gb - has no errors, was reformatted to fix this problem and not actively used (especially for writing  - music was rarely added and erased).
Title: Re: Clip+ error dc_writeback_callback
Post by: saratoga on January 11, 2019, 02:44:06 PM
Does it happen with 3.13? 
Title: Re: Clip+ error dc_writeback_callback
Post by: 1337 on January 11, 2019, 02:45:37 PM
Yes.
Title: Re: Clip+ error dc_writeback_callback
Post by: saratoga on January 11, 2019, 03:57:15 PM
Than it isn't something we broke recently.  does it only happen with the SD card or does it happen on the internal storage too?
Title: Re: Clip+ error dc_writeback_callback
Post by: 1337 on January 12, 2019, 06:26:55 AM
Do you mean ejecting memory card and testing by playing from internal memory? Not tried that, I can test. On latest daily firmware will do?
Also when I power on, and after menu is displayed, instantly pressing Home for resuming playback makes it stuck on "Loading" message without playing (and have to reboot, SD card reading indicator always on), to avoid this I wait for a sec or two.
Before 3.14 release often had a weird bug, while music plays, suddenly a very loud repeating noise (like TV white noise) appears instead of music (as far as I remember, sometimes it gave simultaneously dc_writeback_callback error, sometimes not - just usual playback screen). After 3.14 it appears very rarely, but still present.