Permanently disable AVLS with homebrew?

Discussion in 'PS Vita - Hacking & Homebrew' started by Razor83, Sep 2, 2016.

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  1. Razor83
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    Razor83 GBAtemp Fan

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    I'm looking for a way to disable the AVLS feature present on some models of European PS Vita's.

    For those who dont know AVLS (Automatic Volume Limiter System) is a setting which limits the maximum volume level:-
    http://manuals.playstation.net/document/gb/psvita/settings/avls.html
    When you attempt to turn up the volume it will stop at 21 'clicks' out of 30, and 'AVLS' flashes on the screen:-
    [​IMG]

    Apparently this was implimented in European PS Vita's due to European regulations?:-
    http://community.eu.playstation.com/t5/PS-Vita-Support/AVLS-Problem/td-p/17817920
    http://www.gamefaqs.com/boards/620272-playstation-vita/69573738

    Early 1000 model European PS Vita consoles have AVLS, but this can be permanently disabled by unchecking a tick box in the "Sound & Display" settings:-
    [​IMG]

    Later 1000 models and all 2000 'slim' model European PS Vita's have the same AVLS setting, but unchecking it only disables AVLS temporarily - either for 20 hours or until you turn the system off and on again. In particular this last bit is really annoying, as it means everytime you restart your PS Vita you have to go into the settings to disable AVLS again before you can turn the volume up fully. Here is a picture of the message which pops-up everytime you untick the AVLS setting on a 2000 slim model:-
    [​IMG]
    Note that this pop-up message does not appear at all on early 1000 models.

    I believe this change occured when Sony switched the audio DAC chip used in the PS Vita:-
    Early 1000 models = Wolfson Microelectronics WM1803E
    Later 1000/All 2000 models = Wolfson Microelectronics WM1804E
    [​IMG]
    Presumably the new audio chip is capable of louder volumes, so the AVLS setting for Europe had to be adjusted?

    TLDR: I want to permanently disable AVLS on all European PS Vita models using something like VitaToolbox.
     
    Last edited by Razor83, Sep 4, 2016
    Roah and Langin like this.
    #1 Sep 2, 2016
  2. Langin

    Langin HI! ^O^

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    Razor83 likes this.
    #2 Sep 2, 2016
  3. fixx1983

    fixx1983 Advanced Member

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    Maybe you can try with registry editor in CONFIG\SOUND

    [​IMG]
     
    Last edited by fixx1983, Sep 2, 2016
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    #3 Sep 2, 2016
  4. aos10

    aos10 ❤ Zelda ❤＼(^o^)／

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    Yes,i am very annoyed by AVLS,hope someone make a way to remove it.
    Why the US/JP Vita don't have it?
    Maybe there a way to inject the US file system to EU file system?
     
    #4 Sep 3, 2016
  5. Razor83
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    Razor83 GBAtemp Fan

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    I'm surprised your thread didnt appear in any of my recent google searches! I probably wouldn't have made my own thread if I had seen such a recent post :unsure:

    ...Although hopefully the more exposure we can get about this issue, the greater the chance that someone will find a solution :)

    Thanks for the suggestion, I just tried this and unfortunately it didnt work :(

    On my European 2000 model it shows "avls:1", but changing it to "avls:0" does not appear to disable AVLS. It does appear to uncheck the AVLS tick box in the settings menu, but it doesnt actually disable the AVLS volume limit!? Also upon rebooting the setting changes back to "avls:1".

    I also messed with "avls_timer" changing it between 1 and 0, but that didnt appear to make any difference either.
     
    Last edited by Razor83, Sep 4, 2016
    #5 Sep 4, 2016
  6. leonmagnus99

    leonmagnus99 GBAtemp Psycho!

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    im having the same issue ! i did not know about this, though i rarely put the volume to the max, its usually set to 50-70% for me .

    but it would be awesome to get rid of this stupid restriction through hax :l

    hopefully we will be rid of it eventually.
     
    #6 Sep 13, 2016
  7. Dvdxploitr

    Dvdxploitr GBAtemp Advanced Fan

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    hmm....if i were to bump that "Master_volume" beyond 20...could the Vita get LOUDER and its just restricted by the system itself rather than the speakers? I am hearing impaired (about 40% hearing) and wanting the system louder
     
    #7 Sep 14, 2016
  8. doctorgoat

    doctorgoat GBAtemp Advanced Fan

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    changing the timer to 1 sets it to 1 second

    i told someone to set theirs to an obnoxiously large number to see if it helped, but it wasn't a permanent fix so they got mad!
     
    #8 Sep 14, 2016
  9. Razor83
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    Razor83 GBAtemp Fan

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    Just bumping this thread as due to all the recent PS Vita homebrew developments (and with Henkaku Enso fast approaching) I thought maybe someone could make a homebrew app capable of permanently disabling AVLS on European PS Vita's?
     
    Last edited by Razor83, May 23, 2017
    #9 May 23, 2017
  10. slifer1231

    slifer1231 GBAtemp Regular

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    As far as I know sony seems to use the same system software worldwide on retail versions at-least, there is only flags and reg settings that set the region and other settings im not sure where it is. But if you could find a way to change some settings to make your vita think it is a US version you may be able to disable that setting permanently as I believe since it has the eu flags/settings the avls turns back on even if you edit the registry. Another thing that may work I'm not sure i never tried it but if i remember correctly on the ps3 if you converted your ps3 to a Debug system you could change the region via Debug menu and it would stay maybe that could be done with the vita dex files that where released not to long ago then after you change the region use the firmware re-installer app released by the same person who released the dex files to re flash back to stock 3.60 and maybe it will keep the region change
     
    Last edited by slifer1231, May 23, 2017
    #10 May 23, 2017
  11. SuperDan

    SuperDan Im Aware ... Im Unaware

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    oh im glad i own a oled phat even more now i have never had a issue AVLS ... hope you figure this out
     
    #11 May 25, 2017
  12. memomo

    memomo ( ͡° ͜ʖ ͡°)

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    I hope we can see one day a plugin to disable it forever..

    Sent from my SM-G950F using Tapatalk
     
    #12 Sep 11, 2017
  13. Tom Bombadildo

    Tom Bombadildo G'nome

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    I forgot
    bomigoton, Langin, Razor83 and 5 others like this.
    #13 Oct 9, 2017
  14. Abu_Senpai

    Abu_Senpai GBAtemp Advanced Maniac

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    This is great news! It was so damn annoying to continuously disable AVLS on the Slim Vita.

    I downgraded to the 1000 model, so this is no longer an issue for me. But i now how it feels to repeatedly, go into settings and disable it again and again.
     
    #14 Oct 10, 2017
  15. aos10

    aos10 ❤ Zelda ❤＼(^o^)／

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    #15 Oct 10, 2017
  16. isoboy

    isoboy GBAtemp Advanced Fan

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    I can toggle it. I guess mine (white 1000 3g bought used) is an early one.
     
    #16 Oct 10, 2017
  17. Frezzno

    Frezzno Member

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    Haha, I don't need this. Got an early vita 1000 3g then. But cudos on a job well done.
     
    #17 Oct 10, 2017
  18. PeadyJ

    PeadyJ Member

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    bomigoton likes this.
    #18 Oct 11, 2017
  19. bomigoton

    bomigoton GBAtemp Regular

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    There are no more files on github, did it move elsewhere?

    I think we can find it here
    https://store.brewology.com/vita/ahomebrew.php?brewid=413
    and maybe on homebrew browser, will look later

    Edit:
    githubfiles are back online. I also attached the file to this post.
    Works great! I am on 3.67 with h-encore

    Installation:
    Place noavls.skprx into ux0:tai (or ur0:tai)
    then edit config.txt and add "ux0:tai/noavls.skprx" (or ur0:tai/noavls.skprx depending on what your using)
    under the *KERNEL entry
     

    Attached Files:

    Last edited by bomigoton, Oct 1, 2018
    cvskid likes this.
    #19 Aug 16, 2018
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