The most common issue which can cause this is setting the Page Size incorrectly in the driver. You'll get the red flashing light if the intended page size doesn't match the label.
The other issue is swapping the X and Y dimensions - the X (as far as the printer is concerned) is across the printer; the Y axis is the direction the label feeds. Note that most of the Ptouch labels are longer (Y axis) than they are wide (X axis), but the dimensions on the label box are the other way around. This means you need to specify the paper size as it is on the physical label (i.e. longer than wide) then rotate the label (e.g. gLabels's "Rotated" option). What are you trying to print, and with which application? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1735991 Title: QL-570 printer : the led flashes red and nothing happens To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ptouch-driver/+bug/1735991/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
