NETDEV WATCHDOG: eth0 (atl1c): transmit queue 0 timed out
Modules linked in: hidp snd_hrtimer parport_pc ppdev snd_hda_codec_realtek snd_hda_intel snd_hda_codec arc4 snd_hwdep snd_pcm ath9k rfcomm snd_seq_midi sco bnep i915 l2cap snd_rawmidi binfmt_misc mac80211 snd_seq_midi_event joydev snd_seq uvcvideo snd_timer ath9k_common ath9k_hw ath snd_seq_device btusb cfg80211 drm_kms_helper bluetooth psmouse drm videodev snd eeepc_laptop serio_raw hid_cando soundcore snd_page_alloc i2c_algo_bit video sparse_keymap lp parport usbhid hid ahci libahci atl1c
Pid: 1669, comm: unity-panel-ser Not tainted 2.6.38-6-generic #34-Ubuntu
Call Trace:
 [<c104f882>] ? warn_slowpath_common+0x72/0xa0
 [<c1449da3>] ? dev_watchdog+0x213/0x220
 [<c1449da3>] ? dev_watchdog+0x213/0x220
 [<c104f953>] ? warn_slowpath_fmt+0x33/0x40
 [<c1449da3>] ? dev_watchdog+0x213/0x220
 [<c1069011>] ? __queue_work+0xe1/0x360
 [<c105c5cb>] ? call_timer_fn+0x2b/0xe0
 [<c10b39e3>] ? rcu_start_gp+0x153/0x1e0
 [<c1449b90>] ? dev_watchdog+0x0/0x220
 [<c105d909>] ? run_timer_softirq+0xe9/0x1e0
 [<c1449b90>] ? dev_watchdog+0x0/0x220
 [<c1056502>] ? __do_softirq+0x82/0x170
 [<c1056480>] ? __do_softirq+0x0/0x170
 <IRQ>  [<c10566cd>] ? irq_exit+0x6d/0x80
 [<c151059b>] ? smp_apic_timer_interrupt+0x5b/0x8a
 [<c1509d99>] ? apic_timer_interrupt+0x31/0x38
 [<c150007b>] ? intel_workarounds+0xb0/0x11c
 [<c1500000>] ? intel_workarounds+0x35/0x11c
---[ end trace 76c48880805a3520 ]---