Hangs when alt-tabbing away from retroarch window

[clort81]

Built .so with no problems -- using cmake from upstream easyrpg Date: Sat Apr 29 13:53:44 2023 -0600
On aarch64, debian sid, Xorg 1:7.7+23, Uptodate Mesa-Panfrost drivers

Alt-tabbing away from a game running in this core results in retroarch/core hanging and retroarch becoming unresponsive. Retroarch process doesn't respond to SIGINT anymore, needs kill -1 (SIGHUP)

• Hang doesn't happen with other cores tested (bsnes, snes9x, picodrive).
• Hang doesn't happen with standalone EasyRPG player - only the retroarch core.
• Hang happens regardless of whether compositor is enabled or not (but do test it without compositor to force application to handle damage / redraws)
• Hang also doesn't happen when the retroarch menu is brought-up before alt-tabbing away from the window.

Thanks so much for the work porting to retroarch! RPGMaker is so much nicer with a shader stack like xbrz + pi-crt! Thank you!

[clort81]

Update: removing ~/config/retroarch/retroarch.cfg and letting retroarch generate a new clean .cfg file, then starting game from 'desktop launcher', I can not recreate the hangup.

Alt-tab away from game window and back now works without hanging.

• I was using the minimal retroarch interface and shaders.
• I will try to identify what custom config led to the hang.
• I attach my custom config that crashes upon alt-tabbing away.
  retroarch.cfg.bak.easyrpgbroken.gz

[EDIT]
Starting from default retroarch.cfg, I now begin adapting the fresh retroarch.cfg to my old preferences to try to recreate the hangup.

• re-enabled my preferred shader
• re-configured audio_device and audio_driver = alsathread