Man pages matching name qjackctl in section 1:

qjackctl.1.en	debian 10 / qjackctl
qjackctl.1.en	debian 11 / qjackctl
qjackctl.1.fr	debian 11 / qjackctl
qjackctl.1.en	debian 12 / qjackctl
qjackctl.1.fr	debian 12 / qjackctl