I may be dumb-dumb but I've installed Retroarch on Slack64. I have configured my client to use the full version of Retroach. I don't know if that makes sense. The version that supplies a core updater. The problem is that my client keeps telling me that "No entries to display" when I ask to download a core. I'll terminal it and send you the log.
Code:
michael@caitlyn ~ $ retroarch -v
[INFO] === Build =======================================
[INFO] CPU Model Name: Intel(R) Pentium(R) CPU G3250 @ 3.20GHz
[INFO] Capabilities: MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4 SSE4.2
[INFO] Built: Jun 28 2020
[INFO] Version: 1.8.9
[INFO] =================================================
[INFO] [Environ]: SET_PIXEL_FORMAT: RGB565.
[INFO] [Overrides]: Redirecting save file to "/home/michael/.config/retroarch/saves/.srm".
[INFO] [Overrides]: Redirecting save state to "/home/michael/.config/retroarch/states/.state".
[INFO] Version of libretro API: 1
[INFO] Compiled against API: 1
[INFO] [Audio]: Set audio input rate to: 48000.00 Hz.
[INFO] [Video]: Video @ 960x720
[INFO] [GL]: Found GL context: x
[INFO] [GL]: Detecting screen resolution 1366x768.
[INFO] [GLX]: Window manager is Xfwm4.
[INFO] [GLX]: X = 0, Y = 0, W = 960, H = 720.
[INFO] [GLX]: Found swap function: glXSwapIntervalMESA.
[INFO] [GLX]: glXSwapInterval(1)
[INFO] [GL]: Vendor: nouveau, Renderer: Gallium 0.4 on NVA8.
[INFO] [GL]: Version: 3.0 Mesa 11.2.2.
[INFO] [GL]: Using resolution 960x720
[INFO] [GL]: Default shader backend found: glsl.
[INFO] [Shader driver]: Using GLSL shader backend.
[INFO] [GLSL]: Checking GLSL shader support ...
[WARN] [GL]: Stock GLSL shaders will be used.
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] Setting up menu pipeline shaders for XMB ...
[INFO] [GLSL]: Compiling ribbon shader..
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] [GLSL]: Compiling simple ribbon shader..
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] [GLSL]: Compiling snow shader..
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] [GLSL]: Compiling modern snow shader..
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] [GLSL]: Compiling bokeh shader..
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] [GLSL]: Compiling snowflake shader..
[INFO] [GLSL]: Found GLSL vertex shader.
[INFO] [GLSL]: Found GLSL fragment shader.
[INFO] [GLSL]: Linking GLSL program.
[INFO] [GL]: Using 4 textures.
[INFO] [GL]: Loaded 1 program(s).
[INFO] [GL]: Using GL_RGB565 for texture uploads.
[INFO] [udev]: Pad #0 (/dev/input/event13) supports force feedback.
[INFO] [udev]: Pad #0 (/dev/input/event13) supports 16 force feedback effects.
[INFO] [Joypad]: Found joypad driver: "udev".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [X11]: Suspending screensaver (X11, xdg-screensaver).
[INFO] [Video]: Found display server: x11
[INFO] [PulseAudio]: Requested 24576 bytes buffer, got 18432.
[INFO] [Display]: Found display driver: "gl".
[ERROR] [Font]: Failed to create rendering backend: freetype.
[ERROR] [Font]: Failed to create rendering backend: stb-unicode.
[INFO] [Font]: Using font rendering backend: bitmap.
[ERROR] [Font]: Failed to create rendering backend: freetype.
[ERROR] [Font]: Failed to create rendering backend: stb-unicode.
[INFO] [Font]: Using font rendering backend: bitmap.
[ERROR] [Font]: Failed to create rendering backend: freetype.
[ERROR] [Font]: Failed to create rendering backend: stb-unicode.
[INFO] [Font]: Using font rendering backend: bitmap.
[INFO] [Display]: Found display driver: "gl".
[ERROR] [Font]: Failed to create rendering backend: freetype.
[ERROR] [Font]: Failed to create rendering backend: stb-unicode.
[INFO] [Font]: Using font rendering backend: bitmap.
[ERROR] [Font]: Failed to create rendering backend: freetype.
[ERROR] [Font]: Failed to create rendering backend: stb-unicode.
[INFO] [Font]: Using font rendering backend: bitmap.
[WARN] [XMB] Asset missing: /usr/share/games/retroarch/assets/xmb/monochrome/png/retroarch.png
[WARN] [XMB] Critical asset missing, no icons will be drawn
[INFO] [LED]: LED driver = 'null' 0xfdd220
[INFO] [MIDI]: Input disabled.
[INFO] [MIDI]: Output disabled.
[INFO] [MIDI]: Initialized "null" driver.
[WARN] Input device ID 5 is unknown to this libretro implementation. Using RETRO_DEVICE_JOYPAD.
[INFO] [SRAM]: SRAM will not be saved.
[INFO] [Playlist]: Loading history file: [/home/michael/.config/retroarch/content_history.lpl].
[INFO] [Playlist]: Loading history file: [/home/michael/.config/retroarch/content_music_history.lpl].
[INFO] [Playlist]: Loading history file: [/home/michael/.config/retroarch/content_video_history.lpl].
[INFO] [Playlist]: Loading history file: [/home/michael/.config/retroarch/content_image_history.lpl].
[INFO] [Playlist]: Loading favorites file: [/home/michael/.config/retroarch/content_favorites.lpl].
[INFO] [GL]: VSync => on
[INFO] [GLX]: glXSwapInterval(1)
[ERROR] [Font]: Failed to create rendering backend: freetype.
[ERROR] [Font]: Failed to create rendering backend: stb-unicode.
[INFO] [Font]: Using font rendering backend: bitmap.
[ERROR] [Font]: Failed to create rendering backend: freetype.
[ERROR] [Font]: Failed to create rendering backend: stb-unicode.
[INFO] [Font]: Using font rendering backend: bitmap.
[ERROR] [Font]: Failed to create rendering backend: freetype.
[ERROR] [Font]: Failed to create rendering backend: stb-unicode.
[INFO] [Font]: Using font rendering backend: bitmap.
[INFO] [GL]: VSync => on
[INFO] [GLX]: glXSwapInterval(1)
[INFO] [PulseAudio]: Pausing.
[INFO] [PulseAudio]: Unpausing.
[INFO] [config] Saved new config to "/home/michael/.config/retroarch/retroarch.cfg".
[INFO] Content ran for a total of: 00 hours, 00 minutes, 00 seconds.
[INFO] [PulseAudio]: Pausing.
[INFO] [CORE]: Unloading core..
[INFO] [CORE]: Unloading core symbols..
[INFO] [XINERAMA]: Xinerama version: 1.1.
[INFO] [XINERAMA]: Xinerama screens: 1.
[INFO] [XINERAMA]: Saved monitor #0.
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.