Fixed in OpenPrinting SpliX: https://github.com/OpenPrinting/splix/issues/23
SCX-4521F is listed as UNTESTED on the website. I can confirm that it works perfectly fine.
On modern CPUs this barely uses any cpu time at all, unless you're maybe cloning an SSD onto another SSD It's fast indeed, but on highly compressible data (text) it may go as low as 48,6 MiB/s on my laptop (zstd v.1.3.8 with "-3" on 390 MB text file). Non-compressible or low-compressible data may hit as high as 500 MiB/s on average.
External audio file blocks audio track menu selection
Proper fix: $ sudo rm /opt/pac/lib/ex/vte64/auto/Gnome2/Vte/Vte.so $ sudo dnf install...
That work, rather slow but works, thanks!
Literally every webm file doesn't work if it's started with gst-launch. It works...
Literally every webm file doesn't work if it's started with gst-launch. It works...