Public bug reported:
i...@ian:~$ grep denied /var/log/messages
Apr 27 02:10:11 ian kernel: [ 1334.491281] type=1503 audit(1272298211.150:15):
operation="open" pid=1648 parent=1646 profile="/usr/sbin/cupsd"
requested_mask="w::" denied_mask="w::" fsuid=0 ouid=0 name="/dev/ttyUSB0"
Apr 27 02:10:11 ian kernel: [ 1334.491304] type=1503 audit(1272298211.150:16):
operation="open" pid=1648 parent=1646 profile="/usr/sbin/cupsd"
requested_mask="w::" denied_mask="w::" fsuid=0 ouid=0 name="/dev/ttyUSB1"
Apr 27 02:10:11 ian kernel: [ 1334.491321] type=1503 audit(1272298211.150:17):
operation="open" pid=1648 parent=1646 profile="/usr/sbin/cupsd"
requested_mask="w::" denied_mask=
Connected Devices (generic) usb mouse ; Huawei E620 3g modem (usb)
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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cupsd apparmor profile denies 'w'rite to /dev/ttyUSB devices
https://bugs.launchpad.net/bugs/571411
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