Приложения KDE и Qt перестали печатать

$ okular --print ${name}.pdf 
/usr/bin/lpr: No such file or directory

$ gwenview 
QPainter::begin(): Returned false 
QPainter::viewport: Painter not active 
alignment= 132 
QPainter::setViewport: Painter not active 
QPainter::setWindow: Painter not active 

$ kolourpaint 
kf5.kio.core: KSambaShare: Could not find smb.conf!                                                                                                          
QPainter::begin(): Returned false                                                                                                                            
QPainter::end: Painter not active, aborted

$ qpfview
Could not print ${name}.pdf

$ equery b /usr/bin/lpr 
 * Searching for /usr/bin/lpr ... 
net-print/cups-2.2.7 (/usr/bin/lpr)

$ whereis lpr                                                                                
lpr: /usr/bin/lpr /usr/share/man/man1/lpr.1.bz2