Xpra has pulseaudio support, and it depends on the pulseaudio plugins for GStreamer, but when you compile Xpra with the Pulseaudio useflag, it does not pull gst-plugins-pulse, and because of that, sound does not work. Simply emerging media-plugins/gst-plugins-pulse fixed it.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5a31c7a9baa9a5d7892bc7d3ef3a15e501c9a353 commit 5a31c7a9baa9a5d7892bc7d3ef3a15e501c9a353 Author: Andreas K. Hüttel <dilfridge@gentoo.org> AuthorDate: 2020-10-24 10:19:43 +0000 Commit: Andreas K. Hüttel <dilfridge@gentoo.org> CommitDate: 2020-10-24 15:33:04 +0000 x11-wm/xpra: Add missing dependency Closes: https://bugs.gentoo.org/750491 Package-Manager: Portage-3.0.8, Repoman-3.0.2 Signed-off-by: Andreas K. Hüttel <dilfridge@gentoo.org> x11-wm/xpra/{xpra-3.0.5-r1.ebuild => xpra-3.0.5-r2.ebuild} | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)