Ran avahi-daemon under gdb. After restarting cups and avahi-daemon spinning up I interrupted the running avahi-daemon with Ctrl+C and took a backtrace:
(gdb) bt #0 0x00007ffff7bd2fef in avahi_unescape_label ( name=name@entry=0x7fffffffe408, dest=dest@entry=0x7fffffffe410 "HP Photosmart C5200 series @ till", size=size@entry=64) at domain.c:100 #1 0x00007ffff7bd3674 in avahi_domain_equal ( a=0x6757a0 "\\032C5200\\032series\\032\\064\\032till._printer._tcp.local", b=0x64d9c0 "Hewlett-Packard\\032HP\\032Color\\032LaserJet\\032CM3530\\032MFP\\032\\064\\032till._ipp._tcp.local") at domain.c:239 #2 0x00007ffff79b1bdf in packet_add_probe_query (s=s@entry=0x62b190, p=p@entry=0x674be0, pj=0x66e880, pj@entry=0x673380) at probe-sched.c:201 #3 0x00007ffff79b1ece in elapse_callback (e=<optimized out>, data=<optimized out>) at probe-sched.c:281 #4 0x00007ffff79a2093 in expiration_event (timeout=<optimized out>, userdata=0x623ad0) at timeeventq.c:94 #5 0x00007ffff7bd56c8 in avahi_simple_poll_dispatch (s=0x6229c0) at simple-watch.c:570 #6 0x00007ffff7bd5785 in avahi_simple_poll_iterate (s=<optimized out>, timeout=timeout@entry=-1) at simple-watch.c:605 #7 0x000000000040676c in run_server (c=<optimized out>) at main.c:1217 #8 main (argc=<optimized out>, argv=<optimized out>) at main.c:1635 (gdb) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1059286 Title: avahi-daemon takes 100% CPU right after boot and at every restart of CUPS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1059286/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs