On Wed, 1 Nov 2017 13:51:38 +0100, Peter P. wrote: >Does grep "Features" -A2 trunk/PKGBUILD show you the possible configure >flags or the flags actually used to compile a binary? Did you compine >one yourself? It shows that the official Arch binary of firefox already was build with jack support. I checked out the original PKGBUILD for Firefox from the official Arch Linux extra repository, https://www.archlinux.org/packages/extra/x86_64/firefox/ . My plan was to add "ac_add_options --enable-jack" and then build it myself, but indeed, the maintainer of the package already build with alsa and jack enabled, so I don't need to build firefox myself. Btw. taking a look at https://tracker.debian.org/pkg/firefox rules files Debian's/Ubuntu's firefox is build without alsa or jack. Good news! If I ensure to launch 'firefox' (not 'apulse firefox' by accident) and then start a youtube video, then firefox shows up in qjackctl's tab and automatically connects to playback_1 and playback_2 (hdspmixer shows the signals, I didn't listen by speakers). _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user