With usblp blacklisted - everything works (did not test usb-unidir- default=true in this case).
When usblp is not blacklisted: Jun 15 10:42:37 mcprek4 kernel: [ 65.370530] audit_printk_skb: 3 callbacks suppressed Jun 15 10:42:37 mcprek4 kernel: [ 65.370550] type=1400 audit(1339746157.300:13): apparmor="STATUS" operation="profile_replace" name="/usr/lib/cups/backend/cups-pdf" pid=1172 comm="apparmor_parser" Jun 15 10:42:37 mcprek4 kernel: [ 65.378893] type=1400 audit(1339746157.308:14): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/cupsd" pid=1172 comm="apparmor_parser" Jun 15 10:42:42 mcprek4 kernel: [ 70.584173] usb 1-1: USB disconnect, device number 2 Jun 15 10:42:42 mcprek4 kernel: [ 70.590193] usblp0: removed Jun 15 10:42:46 mcprek4 kernel: [ 74.792106] usb 1-1: new full-speed USB device number 3 using uhci_hcd Jun 15 10:42:46 mcprek4 kernel: [ 74.971457] usblp0: USB Bidirectional printer dev 3 if 1 alt 0 proto 2 vid 0x04E8 pid 0x341B Jun 15 10:42:56 mcprek4 kernel: [ 84.342362] usblp0: removed Jun 15 10:43:19 mcprek4 kernel: [ 107.611910] usblp0: USB Bidirectional printer dev 3 if 1 alt 0 proto 2 vid 0x04E8 pid 0x341B Jun 15 10:44:36 mcprek4 kernel: [ 184.270747] usblp0: removed Jun 15 10:44:56 mcprek4 kernel: [ 204.648783] usblp0: USB Bidirectional printer dev 3 if 1 alt 0 proto 2 vid 0x04E8 pid 0x341B Jun 15 10:45:10 mcprek4 kernel: [ 218.640172] usb 1-1: USB disconnect, device number 3 Jun 15 10:45:10 mcprek4 kernel: [ 218.648305] usblp0: removed Jun 15 10:45:16 mcprek4 kernel: [ 224.408175] usb 1-1: new full-speed USB device number 4 using uhci_hcd Jun 15 10:45:16 mcprek4 kernel: [ 224.584529] usblp0: USB Bidirectional printer dev 4 if 1 alt 0 proto 2 vid 0x04E8 pid 0x341B Jun 15 10:45:21 mcprek4 kernel: [ 229.610385] usblp0: removed Jun 15 10:45:40 mcprek4 kernel: [ 248.777551] usblp0: USB Bidirectional printer dev 4 if 1 alt 0 proto 2 vid 0x04E8 pid 0x341B Jun 15 10:49:58 mcprek4 kernel: [ 506.469079] usblp0: removed Jun 15 10:50:18 mcprek4 kernel: [ 526.876918] usblp0: USB Bidirectional printer dev 4 if 1 alt 0 proto 2 vid 0x04E8 pid 0x341B Jun 15 10:50:42 mcprek4 kernel: [ 550.728172] usb 1-1: USB disconnect, device number 4 Jun 15 10:50:42 mcprek4 kernel: [ 550.736298] usblp0: removed Jun 15 10:50:47 mcprek4 kernel: [ 555.184117] usb 1-1: new full-speed USB device number 5 using uhci_hcd Jun 15 10:50:47 mcprek4 kernel: [ 555.363460] usblp0: USB Bidirectional printer dev 5 if 1 alt 0 proto 2 vid 0x04E8 pid 0x341B Jun 15 10:51:19 mcprek4 kernel: [ 587.104133] usblp0: removed Jun 15 10:51:39 mcprek4 kernel: [ 607.552854] usblp0: USB Bidirectional printer dev 5 if 1 alt 0 proto 2 vid 0x04E8 pid 0x341B Jun 15 10:51:43 mcprek4 kernel: [ 611.825536] usblp0: removed ** Attachment added: "CUPS error_log (standard settings)" https://bugs.launchpad.net/ubuntu/+source/cups/+bug/997040/+attachment/3190500/+files/error_log.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/997040 Title: usb printer backend crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/997040/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
