Retroarch v1.21.0 doesn't start.

Is there an existing issue for this?

• This is a bug in RetroArch frontend
• I have searched the existing issues

Description

So i think that with kernel configs that don't have CONFIG_SND_SEQUENCER set it won't start.

$ flatpak run --verbose org.libretro.RetroArch
F: No installations directory in /etc/flatpak/installations.d. Skipping
F: Opening system flatpak installation at path /var/lib/flatpak
F: Opening user flatpak installation at path /home/user/.local/share/flatpak
F: Opening user flatpak installation at path /home/user/.local/share/flatpak
F: Opening system flatpak installation at path /var/lib/flatpak
F: Opening user flatpak installation at path /home/user/.local/share/flatpak
F: Opening system flatpak installation at path /var/lib/flatpak
F: /var/lib/flatpak/runtime/org.kde.Platform/aarch64/6.8/a04d9546b7c3ce386677dcd633dc47045bf6b1b464279fabb5a2af15e597136a/files/lib32 does not exist
F: /var/lib/flatpak/runtime/org.kde.Platform/aarch64/6.8/a04d9546b7c3ce386677dcd633dc47045bf6b1b464279fabb5a2af15e597136a/files/lib64 does not exist
F: Cleaning up unused container id 3845701432
F: Cleaning up per-app-ID state for org.libretro.RetroArch
F: Allocated instance id 4140121794
F: Add defaults in dir /org/libretro/RetroArch/
F: Add locks in dir /org/libretro/RetroArch/
F: Allowing host-fs access
F: Not sharing "/run/media" with sandbox: Unable to open path "/run/media": No such file or directory
F: Allowing wayland access
F: Allowing pulseaudio access
F: Pulseaudio user configuration file '/home/user/.config/pulse/client.conf': Error opening file /home/user/.config/pulse/client.conf: No such file or directory
F: Running 'bwrap --args 37 -- xdg-dbus-proxy --args=39'
F: Running 'bwrap --args 37 -- retroarch'
ALSA lib ../../../src/seq/seq_hw.c:528:(snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory

Expected behavior

No response

Steps to reproduce the bug

1. Try to open Retroarch on a device that has not enabled CONFIG_SND_SEQUENCER.

Version/Commit

v1.21.0

Bisect Results

1.20.0

Present in the nightly version

I don't know

Platform & operating system

Linux arm64 PostmarketOS

Affected Cores

No response

Environment information

Wayland Flatpak.

Relevant log output

$ flatpak run --verbose org.libretro.RetroArch
F: No installations directory in /etc/flatpak/installations.d. Skipping
F: Opening system flatpak installation at path /var/lib/flatpak
F: Opening user flatpak installation at path /home/user/.local/share/flatpak
F: Opening user flatpak installation at path /home/user/.local/share/flatpak
F: Opening system flatpak installation at path /var/lib/flatpak
F: Opening user flatpak installation at path /home/user/.local/share/flatpak
F: Opening system flatpak installation at path /var/lib/flatpak
F: /var/lib/flatpak/runtime/org.kde.Platform/aarch64/6.8/a04d9546b7c3ce386677dcd633dc47045bf6b1b464279fabb5a2af15e597136a/files/lib32 does not exist
F: /var/lib/flatpak/runtime/org.kde.Platform/aarch64/6.8/a04d9546b7c3ce386677dcd633dc47045bf6b1b464279fabb5a2af15e597136a/files/lib64 does not exist
F: Cleaning up unused container id 3845701432
F: Cleaning up per-app-ID state for org.libretro.RetroArch
F: Allocated instance id 4140121794
F: Add defaults in dir /org/libretro/RetroArch/
F: Add locks in dir /org/libretro/RetroArch/
F: Allowing host-fs access
F: Not sharing "/run/media" with sandbox: Unable to open path "/run/media": No such file or directory
F: Allowing wayland access
F: Allowing pulseaudio access
F: Pulseaudio user configuration file '/home/user/.config/pulse/client.conf': Error opening file /home/user/.config/pulse/client.conf: No such file or directory
F: Running 'bwrap --args 37 -- xdg-dbus-proxy --args=39'
F: Running 'bwrap --args 37 -- retroarch'
ALSA lib ../../../src/seq/seq_hw.c:528:(snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory

Reproduce the issue with flatpak run --verbose org.libretro.RetroArch on Linux arm64 without CONFIG_SND_SEQUENCER, then trace the startup path associated with the logged ALSA snd_seq_hw_open failure. Done means RetroArch v1.21.0 can start on that configuration without the sequencer device.