Same issue here on a Dell Vostro 1700 with Ubuntu 16.04. Linux briga-laptop 4.4.0-36-generic #55-Ubuntu SMP Thu Aug 11 18:01:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
[ 3125.120019] iwl3945 0000:0c:00.0: Queue 4 stuck for 2500 ms. [ 3125.120026] iwl3945 0000:0c:00.0: On demand firmware reload [ 3125.125835] ieee80211 phy0: Hardware restart was requested [ 3125.173756] iwl3945 0000:0c:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020 [ 3125.173761] iwl3945 0000:0c:00.0: Unable to set up bootstrap uCode: -5 [ 3125.220478] iwl3945 0000:0c:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020 [ 3125.220481] iwl3945 0000:0c:00.0: Unable to set up bootstrap uCode: -5 [ 3125.267181] iwl3945 0000:0c:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020 [ 3125.267185] iwl3945 0000:0c:00.0: Unable to set up bootstrap uCode: -5 [ 3125.313896] iwl3945 0000:0c:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020 [ 3125.313900] iwl3945 0000:0c:00.0: Unable to set up bootstrap uCode: -5 [ 3125.360606] iwl3945 0000:0c:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020 [ 3125.360614] iwl3945 0000:0c:00.0: Unable to set up bootstrap uCode: -5 [ 3125.397069] iwl3945 0000:0c:00.0: Unable to initialize device after 5 attempts. [ 3125.397077] ------------[ cut here ]------------ [ 3125.397139] WARNING: CPU: 0 PID: 4936 at /build/linux-a2WvEb/linux-4.4.0/net/mac80211/util.c:1818 ieee80211_reconfig+0x1e0/0xf80 [mac80211]() [ 3125.397141] Hardware became unavailable during restart. [ 3125.397143] Modules linked in: drbg ansi_cprng ctr ccm binfmt_misc nvidia_uvm(POE) gpio_ich dell_wmi sparse_keymap dell_laptop dcdbas coretemp dell_smm_hwmon kvm_intel kvm irqbypass input_leds serio_raw nvidia(POE) lpc_ich uvcvideo arc4 iwl3945 videobuf2_vmalloc videobuf2_memops iwlegacy videobuf2_v4l2 videobuf2_core joydev snd_hda_codec_hdmi v4l2_common mac80211 videodev r852 sm_common media nand snd_hda_codec_idt snd_hda_codec_generic nand_ecc nand_bch bch snd_hda_intel nand_ids r592 snd_hda_codec mtd cfg80211 memstick snd_hda_core snd_hwdep snd_pcm drm snd_seq_midi snd_seq_midi_event snd_rawmidi wmi mac_hid snd_seq snd_seq_device snd_timer snd soundcore shpchp parport_pc ppdev lp parport autofs4 ses enclosure hid_generic psmouse usbhid hid firewire_ohci firewire_core uas crc_itu_t b44 ssb sdhci_pci [ 3125.397226] mii sdhci pata_acpi usb_storage video [ 3125.397235] CPU: 0 PID: 4936 Comm: kworker/0:2 Tainted: P OE 4.4.0-36-generic #55-Ubuntu [ 3125.397238] Hardware name: Dell Inc. Vostro 1700 /0HX767, BIOS A07 04/21/2008 [ 3125.397261] Workqueue: events_freezable ieee80211_restart_work [mac80211] [ 3125.397264] 0000000000000286 00000000122297b0 ffff88006c84fcf0 ffffffff813f13b3 [ 3125.397269] ffff88006c84fd38 ffffffffc0410930 ffff88006c84fd28 ffffffff810810f2 [ 3125.397273] ffff8800b8c70700 00000000fffffffb ffff8800b8c70700 0000000000000000 [ 3125.397277] Call Trace: [ 3125.397288] [<ffffffff813f13b3>] dump_stack+0x63/0x90 [ 3125.397294] [<ffffffff810810f2>] warn_slowpath_common+0x82/0xc0 [ 3125.397298] [<ffffffff8108118c>] warn_slowpath_fmt+0x5c/0x80 [ 3125.397325] [<ffffffffc039b7d4>] ? drv_start+0x44/0x110 [mac80211] [ 3125.397358] [<ffffffffc03ccb40>] ieee80211_reconfig+0x1e0/0xf80 [mac80211] [ 3125.397364] [<ffffffff8182be32>] ? mutex_lock+0x12/0x30 [ 3125.397389] [<ffffffffc03981eb>] ieee80211_restart_work+0x6b/0xa0 [mac80211] [ 3125.397395] [<ffffffff8109a2c5>] process_one_work+0x165/0x480 [ 3125.397399] [<ffffffff8109a62b>] worker_thread+0x4b/0x4c0 [ 3125.397403] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [ 3125.397406] [<ffffffff8109a5e0>] ? process_one_work+0x480/0x480 [ 3125.397410] [<ffffffff810a0808>] kthread+0xd8/0xf0 [ 3125.397414] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [ 3125.397419] [<ffffffff8182e34f>] ret_from_fork+0x3f/0x70 [ 3125.397422] [<ffffffff810a0730>] ? kthread_create_on_node+0x1e0/0x1e0 [ 3125.397425] ---[ end trace fba2cc789462e954 ]--- [ 3125.397489] wlp12s0: deauthenticating from f4:f2:6d:98:6d:a4 by local choice (Reason: 3=DEAUTH_LEAVING) [ 3125.397503] ------------[ cut here ]------------ [ 3125.397526] WARNING: CPU: 0 PID: 4936 at /build/linux-a2WvEb/linux-4.4.0/net/mac80211/driver-ops.h:12 ieee80211_bss_info_change_notify+0x1be/0x1d0 [mac80211]() [ 3125.397529] wlp12s0: Failed check-sdata-in-driver check, flags: 0x4 [ 3125.397530] Modules linked in: drbg ansi_cprng ctr ccm binfmt_misc nvidia_uvm(POE) gpio_ich dell_wmi sparse_keymap dell_laptop dcdbas coretemp dell_smm_hwmon kvm_intel kvm irqbypass input_leds serio_raw nvidia(POE) lpc_ich uvcvideo arc4 iwl3945 videobuf2_vmalloc videobuf2_memops iwlegacy videobuf2_v4l2 videobuf2_core joydev snd_hda_codec_hdmi v4l2_common mac80211 videodev r852 sm_common media nand snd_hda_codec_idt snd_hda_codec_generic nand_ecc nand_bch bch snd_hda_intel nand_ids r592 snd_hda_codec mtd cfg80211 memstick snd_hda_core snd_hwdep snd_pcm drm snd_seq_midi snd_seq_midi_event snd_rawmidi wmi mac_hid snd_seq snd_seq_device snd_timer snd soundcore shpchp parport_pc ppdev lp parport autofs4 ses enclosure hid_generic psmouse usbhid hid firewire_ohci firewire_core uas crc_itu_t b44 ssb sdhci_pci [ 3125.397597] mii sdhci pata_acpi usb_storage video [ 3125.397605] CPU: 0 PID: 4936 Comm: kworker/0:2 Tainted: P W OE 4.4.0-36-generic #55-Ubuntu -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1408963 Title: [Xbuntu 14.04, 14.10 and 15.04] Network manager stops working: iwl3945 0000:03:00.0: BSM uCode verification failed at addr ...; wlan0: deauthenticating from... by local choice (Reason: 3=DEAUTH_LEAVING), Status in linux-firmware package in Ubuntu: Confirmed Status in network-manager package in Ubuntu: Confirmed Bug description: From time to time, the system loses all wireles networks and kubuntu network manager applet goes blank - not even one network is shown. All wifi connections are broken. Rebooting fixes the issue, switching to WICD on-the-fly enables to continue browsing without rebooting, so it seems to be no hardware issue or iwl3945 issue. What to expect: stable connections and flawless network managing. What happens: so above. Further informations about the system, the network configuration, the package version can be found in the attachment, also parts of rsyslog and dmesg. Interesting, according to some helpers, are the following lines: dmesg: wlan0: deauthenticating from 02:26:4d:ac:8f:45 by local choice (Reason: 3=DEAUTH_LEAVING) lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.10 Release: 14.10 Codename: utopic apt-cache policy network-manager network-manager: Installiert: 0.9.8.8-0ubuntu28 Installationskandidat: 0.9.8.8-0ubuntu28 Versionstabelle: *** 0.9.8.8-0ubuntu28 0 500 http://de.archive.ubuntu.com/ubuntu/ utopic/main amd64 Packages 100 /var/lib/dpkg/status To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1408963/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
