@Joseph: This has been happening since the first 13.10 image was available and I installed it so several months now. So it happened in 3.10 and is still occuring in 3.11. I just had it happen again this evening and looked at dmesg and saw some odd looking messages about iwlwifi:
[ 80.035772] Call Trace: [ 80.035777] [<ffffffff816f2351>] dump_stack+0x45/0x56 [ 80.035781] [<ffffffff81061cfd>] warn_slowpath_common+0x7d/0xa0 [ 80.035783] [<ffffffff81061dda>] warn_slowpath_null+0x1a/0x20 [ 80.035788] [<ffffffffa02ed225>] iwl_trans_pcie_send_hcmd+0x575/0x5d0 [iwlwifi] [ 80.035794] [<ffffffffa0459b0b>] ? iwlagn_set_rxon_chain+0x16b/0x260 [iwldvm] [ 80.035799] [<ffffffffa0459cc2>] iwl_dvm_send_cmd+0x52/0x130 [iwldvm] [ 80.035804] [<ffffffffa045a0e1>] iwl_dvm_send_cmd_pdu+0x41/0x50 [iwldvm] [ 80.035808] [<ffffffffa04628f4>] iwl_power_set_mode+0x1b4/0x300 [iwldvm] [ 80.035813] [<ffffffffa0462ae7>] iwl_power_update_mode+0xa7/0x190 [iwldvm] [ 80.035818] [<ffffffffa0466b91>] iwlagn_mac_config+0x2f1/0x390 [iwldvm] [ 80.035824] [<ffffffffa0383892>] ieee80211_hw_config+0x72/0x320 [mac80211] [ 80.035835] [<ffffffffa03bf3ae>] ieee80211_recalc_ps.part.21+0x17e/0x200 [mac80211] [ 80.035845] [<ffffffffa03c0ca7>] ieee80211_rx_mgmt_beacon+0xd17/0x1110 [mac80211] [ 80.035848] [<ffffffff8101a2e5>] ? native_sched_clock+0x15/0x80 [ 80.035850] [<ffffffff81098d68>] ? __enqueue_entity+0x78/0x80 [ 80.035852] [<ffffffff8109d96d>] ? enqueue_entity+0x2ad/0xb80 [ 80.035854] [<ffffffff81098206>] ? arch_vtime_task_switch+0x96/0xa0 [ 80.035856] [<ffffffff8109cef8>] ? check_preempt_wakeup+0x1a8/0x270 [ 80.035858] [<ffffffff81092675>] ? check_preempt_curr+0x85/0xa0 [ 80.035860] [<ffffffff810926a9>] ? ttwu_do_wakeup+0x19/0xd0 [ 80.035863] [<ffffffff810945b0>] ? try_to_wake_up+0x200/0x2b0 [ 80.035865] [<ffffffff8109b7ac>] ? update_curr+0xec/0x180 [ 80.035874] [<ffffffffa03c2503>] ieee80211_sta_rx_queued_mgmt+0x2c3/0x540 [mac80211] [ 80.035876] [<ffffffff8109cef8>] ? check_preempt_wakeup+0x1a8/0x270 [ 80.035878] [<ffffffff81092675>] ? check_preempt_curr+0x85/0xa0 [ 80.035880] [<ffffffff810926a9>] ? ttwu_do_wakeup+0x19/0xd0 [ 80.035882] [<ffffffff810945b0>] ? try_to_wake_up+0x200/0x2b0 [ 80.035885] [<ffffffff8104deb9>] ? default_spin_lock_flags+0x9/0x10 [ 80.035893] [<ffffffffa039343c>] ieee80211_iface_work+0x25c/0x360 [mac80211] [ 80.035895] [<ffffffff8107afd9>] ? pwq_activate_delayed_work+0x39/0x80 [ 80.035897] [<ffffffff8107cfbc>] process_one_work+0x17c/0x430 [ 80.035899] [<ffffffff8107dc0c>] worker_thread+0x11c/0x3c0 [ 80.035901] [<ffffffff8107daf0>] ? manage_workers.isra.24+0x2a0/0x2a0 [ 80.035904] [<ffffffff81084710>] kthread+0xc0/0xd0 [ 80.035906] [<ffffffff81084650>] ? kthread_create_on_node+0x120/0x120 [ 80.035909] [<ffffffff8170212c>] ret_from_fork+0x7c/0xb0 [ 80.035912] [<ffffffff81084650>] ? kthread_create_on_node+0x120/0x120 [ 80.035913] ---[ end trace e07b3e760c09dab0 ]--- [ 80.035916] iwlwifi 0000:02:00.0: Command POWER_TABLE_CMD: a command is already active! [ 80.035919] iwlwifi 0000:02:00.0: set power fail, ret = -5 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1221857 Title: Wifi slowly degrades until no data transfer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1221857/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
