When putting files into /usr/share/scummvm (extras folder), they are deleted on next boot

[StephanRoemer]

Issue: when trying to copy files like the MT-32 into /usr/share/scummvm, they get deleted upon next boot.

This isn't an issue when using the standalone scummVM version by pressing F1, because we can change the extras folder manually and it persists. BUT when using the one from Emulation Station (scummVM not libretto), then the "extras" path gets reset to /usr/share/scummvm. This results in games either not launching or not launching correctly, because the MT-32 files cannot be found.

[StephanRoemer]

I just checked: setting the extras folder per game also resets back to /usr/share/scummvm

[lbrpdx]

When you put files in /usr/share/scummvm (or anywhere outside /userdata/) you need to log into the Batocera system and run the command batocera-save-overlay to make them persistent upon reboot. See https://wiki.batocera.org/modify_the_system_while_it_s_running#creating_a_batocera_filesystem_overlay

[dmanlfc]

i guess the question is, what are these extra files & what do they do @StephanRoemer ? should we not have a 'extras' path in userdata for scummvm @lbrpdx ? ideally we don't want modifications which get wiped out with batocera upgrades after time

[StephanRoemer]

i guess the question is, what are these extra files & what do they do @StephanRoemer ? should we not have a 'extras' path in userdata for scummvm @lbrpdx ? ideally we don't want modifications which get wiped out with batocera upgrades after time

In the case of the MT-32 files: these are the ROM files of the MT-32, that are needed by scummVM in order to make use of the MT-32 emulation. These files are expected in the extra path. Game path is also possible, but that would create tons of copies of the same file. I agree that it would be great to have a way to keep those edits with a new update regarding the overly-solution. https://docs.scummvm.org/en/latest/advanced_topics/understand_audio.html#mt-32-device-emulation

Place these ROMs in the game directory, in your extrapath, or in the directory where your ScummVM executable resides. ScummVM also looks for CM32L_PCM.ROM and CM32L_CONTROL.ROM—the ROMs from the CM-32L device—and uses these instead of the MT32 ROMs if they are available.

[dmanlfc]

@StephanRoemer so create a folder like - /userdata/system/configs/scummvm/extras Then via F1 - use the scummvm-config to point the extra path to the above folder Should work if your synth ROMs are in there.

[dmanlfc]

Please confirm then close - thanks

[StephanRoemer]

That's actually what I tried first, but when starting scummvm from Emulation Station, the extras folder reverts to /usr/share/scummvm/ I guess this is due to the fact that there are important *.DAT files in that folder that scummvm needs for several games.

The extras folder and the save game folder always revert to their defaults. The entries are then colored red.

[dmanlfc]

ahhh i see the problem, try this build...

https://drive.google.com/drive/folders/1SO6Mwu-UY3-n00dTSClu0i9JkIAtZZUc?usp=sharing

instructions to manually upgrade are in the readme file. put your MT-32 ROM files in /userdata/system/configs/scummvm/extras

test it out & let me know.

[StephanRoemer]

Well, looks like I wrecked my Batocera install. The device definitely had 16 GB free on the SD card. Not sure where this issues came from.

[StephanRoemer]

Can I just extract the batocera.update and copy it over to /boot ?

[dmanlfc]

Are you x86?

[dmanlfc]

Can I just extract the batocera.update and copy it over to /boot ?

Yes, but what system have you got?

[StephanRoemer]

I’m on a Rasp Pi 4. For now, I managed to get my old system back working by copying the Pi 4 boot files 🥳

[dmanlfc]

I'm away with work but this is the file that changed. Grab that and replace it then use batocera-save-overlay to make it permanent.

https://github.com/batocera-linux/batocera.linux/blob/bf802cfeb42b02f37e795c672f4b92e85b0abb47/package/batocera/core/batocera-configgen/configgen/configgen/generators/scummvm/scummvmGenerator.py

Use find / -name scummvmGen* to find the location of the file to replace

[StephanRoemer]

Hey Daniel, thanks so much for your efforts despite the fact that you are away with work. I could get it working, but there is still something I don't understand.

Could it be that there are different configs for scummvm standalone (opened via F1) and scummvm standalone (opened via Emulation Station)?

scummvm via F1, settings are pointing to the SHARE folder:

scummvm via ES, settings are pointing to userdata/config and cannot be changed (settings revert)

[dmanlfc]

That's correct we want to set the directory. What's happens when you add your midi ROMs there?

[dmanlfc]

Note: F1 is for extreme config changes

[StephanRoemer]

Yes, yes, yes, heureka! Putting it into /userdata/configs/scummvm worked! Thanks! Now the only question is, if the DAT files should also be moved in there, since we can only have one extra folder, if I'm understanding this correctly?

EDIT: want me to close the issue?

[dmanlfc]

Anything that is extra should go in there I assume

[StephanRoemer]

Has this been merged with the latest beta?

[n2qz]

Path for these MT-32 files in current release (v38) is /userdata/bios/scummvm/extra I believe this issue can be closed out.