I'm seemingly mistaken :D. [rocketmouse@archlinux tmp]$ asp update [rocketmouse@archlinux tmp]$ asp checkout firefox [rocketmouse@archlinux tmp]$ cd firefox/ [rocketmouse@archlinux firefox]$ grep "Features" -A2 trunk/PKGBUILD # Features ac_add_options --enable-alsa ac_add_options --enable-jack If I first launch qjackctl and then firefox (without apulse), then firefox doesn't show up in qjackctl's audio tab. As a shot in the dark I added the option --jack and --jackd to firefox, but nothing changed. IIRC apps could connect to jack without being visible in qjackctl's audio tab, IIRC I noticed this when using audacity, but I might be mistaken. This is firefox on Arch Linux. [rocketmouse@archlinux firefox]$ pacman -Q firefox firefox 56.0.2-1 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user