Hi, I have a HP LaserJet 1020 with the same symptoms. Blacklisting usblp does solve the problem for me too, the firmware is downloaded successfully. I did what you asked, changed cups loglevel to debug, restarted cups and reproduced the problem. No new entries got added to cups error log at all. Tried debug2, nothing again. Here is my syslog though. May 15 21:09:43 wicklow kernel: [ 8197.044146] usb 1-1: new high-speed USB device number 5 using ehci_hcd May 15 21:09:43 wicklow kernel: [ 8197.196116] usb 1-1: New USB device found, idVendor=03f0, idProduct=2b17 May 15 21:09:43 wicklow kernel: [ 8197.196134] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 May 15 21:09:43 wicklow kernel: [ 8197.196147] usb 1-1: Product: HP LaserJet 1020 May 15 21:09:43 wicklow kernel: [ 8197.196157] usb 1-1: Manufacturer: Hewlett-Packard May 15 21:09:43 wicklow kernel: [ 8197.196167] usb 1-1: SerialNumber: JL2RH3S May 15 21:09:43 wicklow kernel: [ 8197.199465] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x03F0 pid 0x2B17 May 15 21:09:46 wicklow /usr/sbin/hplj1020: foo2zjs: loading HP LaserJet 1020 firmware /lib/firmware/hp/sihp1020.dl to /dev/usb/lp0 ... May 15 21:09:46 wicklow kernel: [ 8200.425035] usblp0: nonzero write bulk status received: -108 May 15 21:09:46 wicklow kernel: [ 8200.425142] usblp0: nonzero read bulk status received: -108 May 15 21:09:46 wicklow kernel: [ 8200.426465] usblp0: removed May 15 21:09:46 wicklow /usr/sbin/hplj1020: foo2zjs: ... download failed. <as you can see, there is a wait here, I didn’t do anything and it just continued> May 15 21:10:02 wicklow kernel: [ 8216.428508] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x03F0 pid 0x2B17 May 15 21:10:10 wicklow kernel: [ 8224.629097] usblp0: removed May 15 21:10:11 wicklow kernel: [ 8225.852539] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x03F0 pid 0x2B17 May 15 21:10:11 wicklow /usr/sbin/hplj1020: foo2zjs: loading HP LaserJet 1020 firmware /lib/firmware/hp/sihp1020.dl to CUPS USB device ... May 15 21:10:12 wicklow kernel: [ 8225.873710] usblp0: removed May 15 21:10:15 wicklow kernel: [ 8229.065380] usb 1-1: usbfs: process 7056 (usb) did not claim interface 0 before use May 15 21:10:15 wicklow /usr/sbin/hplj1020: foo2zjs: usb://HP/LaserJet%201020?serial=JL2RH3S... download failed. May 15 21:10:15 wicklow kernel: [ 8229.076632] usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x03F0 pid 0x2B17 May 15 21:10:15 wicklow /usr/sbin/hplj1020: foo2zjs: loading HP LaserJet 1020 firmware /lib/firmware/hp/sihp1020.dl to CUPS USB device ... May 15 21:10:15 wicklow kernel: [ 8229.093555] usblp0: removed |