This line indicates that your printer is detected by CUPS:
direct usb://Brother/HL-1050%20series
Could you please post a screenshot showing "No printer detected" under Use a detected printer (Use Alt+PrintScreen).
Is Brother HL-1050 USB #1 displayed in the Printer Port dropdown?
You could try to add your printer using CUPS webinterface instead of gnome-cups-manager, to do this type http://localhost:631 in firefox. Does this work?
This line indicates that your printer is detected by CUPS: HL-1050% 20series
direct usb://Brother/
Could you please post a screenshot showing "No printer detected" under Use a detected printer (Use Alt+PrintScreen).
Is Brother HL-1050 USB #1 displayed in the Printer Port dropdown?
You could try to add your printer using CUPS webinterface instead of gnome-cups-manager, to do this type http:// localhost: 631 in firefox. Does this work?