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GENERAL_FREQUENTLY_ASKED_QUESTIONS.md

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        Latest Version Activity Pull Requests Discord Server

Frequently Asked Questions

About the Distribution

Does JELOS offer any formal support?

  • No. JELOS is something that we develop for fun, it is provided as-is. There are a variety of avenues to seek community help, but this is a tinkerer's distribution so you will need to get your hands dirty to solve your problems.

Do you plan to add additional ports, software, or emulators?

  • We are a community developed distribution, and we believe that it is the responsibility of the person who wants a new feature to develop and contribute that feature. If you would like to add something to JELOS, pull requests are welcomed. Please review our code of conduct, our contributing guidelines, and our build guide before submitting your first pull request.

Licensing JELOS for redistribution

JELOS utilizes a non-commercial CC BY-NC-SA 4.0 copyleft license on our branding which is intended to prevent abuse of our software. Device Makers and others who would like to bundle on devices may not do so without our express permission.

Redistribution Authorization Requirements

If you would like to receive permission from our project to redistribute JELOS, you must request permission in writing. We can be reached at [email protected].

Benefits

Authorization to use our branding will allow you to distribute JELOS on your device without needing to maintain a fork of the project for your device. This would include access to our online update feature.

Minimum Requirements

To receive permission to redistribute JELOS the following minimum criteria must be met. Please note, that taking these actions without formally receiving approval from our project does not grant you the authority to use our branding. You MUST receive approval from JELOS.

  1. We receive sources for device(s) before they ship to consumers and we have irrevokable authority to publish at our leisure. We strongly prefer device makers contribute changes to support their device(s) directly to the distribution themselves.
  2. Provide, upon request, device samples for every JELOS team member (including core developers, moderation team, and outside contributors), as well as any community developer designated by JELOS, for all devices planned, supported by, or bundled with JELOS for as long as the device maker manufactures the device.
  3. It is up to the requestor to secure distribution rights for software included with JELOS that is not developed or owned by JELOS.
  4. A support representative must join and participate in our community to support their device(s).
Selling JELOS

JELOS branding is licensed for non-commercial use only. Even if approved to be distributed on a device, it is not allowed to be sold or included as an up charge in any form what-so-ever. Period. This is not negotiable.

What if you stop working on JELOS?

About Using JELOS

Which emulators and game engines are supported by JELOS?

  • Emulators and game engines are configured on a per device basis and are automatically documented at build time. Documentation can be found at the following URL:

Sound suddenly stopped working on my device!

  • Log in over ssh, and run the following steps.
systemctl stop pipewire-pulse pipewire-pulse.socket pipewire pipewire.socket wireplumber
rm -rf /storage/.local/state /storage/.config/pulse
reboot

EmuStation displays duplicate game titles. How can I disable a file extension to remove the duplicates? (e.g. display only .cue and don't display .bin files for PlayStation)

  • Within EmuStation, select the relevant game system (e.g. PlayStation)
  • Press Select to View Options
  • In View Options section, choose View Customisation
  • Under File Extensions, deselect any file extensions that are not required (e.g. deselect .bin for PlayStation when also using .cue files)

How do I edit es_systems.cfg (for example, to modify the list of systems in EmuStation, add a custom core or script, or change the order that systems are displayed)?

  • Delete the ~/.config/emulationstation/es_systems.cfg symlink.
  • Copy the custom version of es_systems.cfg to ~/.config/emulationstation.
  • Stop the UI service.

systemctl stop ${UI_SERVICE}

  • Restart the UI service to use the custom version

systemctl start ${UI_SERVICE}

Note: System updates will overwrite it, custom settings will be preserved as last_es_systems.cfg.

Where do I put bios files and files and Retroarch system files

  • They go in /storage/roms/bios
  • System bios checker in game settings, missing bios identities missing files per emulator and indicates their required location

Where do I put music files to enable background music within emulationstation (while browsing my game library)?

  • Music files should be added to /storage/roms/BGM

My game has slowdown and stuttering issues. What can I do to improve performance?

First make sure you do not have a TDP configured that is too low for your emulator to function correctly. Next, try adjusting settings within the emulator, either retroarch core or standalone emulator configuration menu. First make sure that rewind is disabled. Search online to check for recommended settings that others may have determined.

Where are log files stored?

  • Log files can be found in /var/log/

Various logs are generated, including

  • EmuStation logs es_log.txt (cumulative log of all ES activity), es_launch_stdout.log (last emulator launched from ES) and es_launch_stderr.log (blank if there wasn't an error for the last emulator launch)
  • Execution log exec.log (generic execution log that indicates what was last executed, including the command to launch the emulator) e.g. for gzdoom launch of heretic.doom runemu.sh: Executing /usr/bin/bash start_gzdoom.sh /storage/roms/doom/heretic.doom
  • Boot log boot.log (Output from autostart during system startup)
  • Emulator-specific log (for non-retroarch emulators) e.g. gzdoom.log is the log specific to gzdoom to indicate whether there is any issue within the emulator when launching heretic.doom, noted above
  • Retroarch logs are turned off by default, but can be enabled within Retroarch (Tools > Retroarch: Settings > Logging > Log to a File), are stored in /var/log/retroarch and are quite detailed, so should provide sufficient detail to identify missing roms within a game's romset, configuration issues and other errors that prevent games from working

Note: Retroarch uses a shared config file, so logging can be enabled within 64bit or 32bit and it will be enabled for all Retroarch cores

I have a device with a single microsd and I can't see the games partition in Windows or macOS.

  • JELOS does not create an ExFAT partition on the boot device, and expands the full partition using ext4. You can sync files to the device using SyncThing, copy files to the device using SAMBA, or by loading your files onto a EXT4, ExFAT, or FAT32 formatted usb stick and copy them with FileMan or over ssh.
    • Windows Users can connect to their device by unc path using the device name such as \\handheld or by IP \\device IP address into the address bar in Windows Explorer.
    • Mac users can connect by selecting "Go" from the Finder menu, followed by "Connect to Server", then enter smb://handheld or smb://device IP address.
  • Log in as root. The root password is required for access which can be found in the system menu.