I have a similar situation: wifi will randomly disappear. Some bits from the logs:
Jul 31 09:20:38 bonobo kernel: [162551.133513] iwlwifi 0000:04:00.0: fail to flush all tx fifo queues Q 5 Jul 31 09:20:38 bonobo kernel: [162551.204513] iwlwifi 0000:04:00.0: Queue 5 is active on fifo 2 and stuck for 10000 ms. SW [63, 64] HW [90, 90] FH TRB=0x05a5a5a5a Jul 31 09:20:38 bonobo kernel: [162551.222152] iwlwifi 0000:04:00.0: Failed to wake NIC for hcmd Jul 31 09:20:38 bonobo kernel: [162551.222166] iwlwifi 0000:04:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5 Jul 31 09:20:38 bonobo kernel: [162551.222169] wlan0: HW problem - can not stop rx aggregation for 92:2a:a8:15:18:81 tid 0 ul 31 09:20:38 bonobo kernel: [162551.239878] iwlwifi 0000:04:00.0: Failed to wake NIC for hcmd Jul 31 09:20:38 bonobo kernel: [162551.239891] iwlwifi 0000:04:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5 Jul 31 09:20:38 bonobo kernel: [162551.239894] wlan0: HW problem - can not stop rx aggregation for 92:2a:a8:15:18:81 tid 1 Jul 31 09:20:38 bonobo kernel: [162551.257561] iwlwifi 0000:04:00.0: Failed to wake NIC for hcmd Jul 31 09:20:38 bonobo kernel: [162551.257571] iwlwifi 0000:04:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5 Jul 31 09:20:38 bonobo kernel: [162551.257573] wlan0: HW problem - can not stop rx aggregation for 92:2a:a8:15:18:81 tid 5 Jul 31 09:20:38 bonobo kernel: [162551.275226] iwlwifi 0000:04:00.0: Failed to wake NIC for hcmd Jul 31 09:20:38 bonobo kernel: [162551.275250] iwlwifi 0000:04:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5 -- 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/1743489 Title: iwlwifi firmware panic on 4.13, ucode 29.610311.0 Status in network-manager package in Ubuntu: Confirmed Bug description: On random occasion, or with certain wifi loads, iwlwifi panics with the wifi nolonger being wakeable; [ 14.548729] iwlwifi 0000:05:00.0: loaded firmware version 29.610311.0 op_mode iwlmvm [ 14.611562] iwlwifi 0000:05:00.0: Detected Intel(R) Dual Band Wireless AC 3165, REV=0x210 [ 14.631936] iwlwifi 0000:05:00.0: base HW address: 08:d4:0c:ef:9b:4c [ 15.094132] iwlwifi 0000:05:00.0 wlo1: renamed from wlan0 [ 436.462157] WARNING: CPU: 3 PID: 0 at /build/linux-4LIBhY/linux-4.13.0/drivers/net/wireless/intel/iwlwifi/pcie/trans.c:1873 iwl_trans_pcie_grab_nic_access+0xdf/0xf0 [iwlwifi] [ 436.462159] Modules linked in: ccm rfcomm cmac bnep binfmt_misc nls_iso8859_1 amd_freq_sensitivity edac_mce_amd kvm_amd kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc snd_hda_codec_realtek aesni_intel snd_hda_codec_generic arc4 snd_hda_codec_hdmi aes_x86_64 crypto_simd glue_helper snd_hda_intel cryptd uvcvideo snd_hda_codec videobuf2_vmalloc videobuf2_memops snd_hda_core snd_seq_midi videobuf2_v4l2 snd_hwdep videobuf2_core snd_seq_midi_event joydev snd_rawmidi videodev iwlmvm input_leds hp_wmi sparse_keymap media wmi_bmof mac80211 snd_pcm btusb serio_raw btrtl snd_seq btbcm btintel k10temp fam15h_power bluetooth snd_seq_device snd_timer i2c_piix4 iwlwifi ecdh_generic cfg80211 snd soundcore shpchp i2c_scmi mac_hid hp_wireless parport_pc ppdev lp parport ip_tables x_tables autofs4 [ 436.462351] RIP: 0010:iwl_trans_pcie_grab_nic_access+0xdf/0xf0 [iwlwifi] [ 436.462417] iwl_read_prph+0x32/0x80 [iwlwifi] [ 436.462444] iwl_trans_pcie_log_scd_error+0x120/0x1e0 [iwlwifi] [ 436.462477] ? iwl_pcie_txq_inc_wr_ptr+0xf0/0xf0 [iwlwifi] [ 436.462499] iwl_pcie_txq_stuck_timer+0x4b/0x70 [iwlwifi] [ 436.516736] iwlwifi 0000:05:00.0: Queue 10 is active on fifo 2 and stuck for 10000 ms. SW [22, 107] HW [90, 90] FH TRB=0x05a5a5a5a [ 440.022480] iwlwifi 0000:05:00.0: Failed to wake NIC for hcmd [ 440.022600] iwlwifi 0000:05:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5 [ 440.022607] iwlwifi 0000:05:00.0: Scan failed! ret -5 [ 441.041965] iwlwifi 0000:05:00.0: Failed to wake NIC for hcmd [ 441.042121] iwlwifi 0000:05:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5 [ 441.042128] iwlwifi 0000:05:00.0: Scan failed! ret -5 [ 442.061856] iwlwifi 0000:05:00.0: Failed to wake NIC for hcmd ...recurring Kubuntu 17.10 ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: network-manager 1.8.4-1ubuntu3 ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13 Uname: Linux 4.13.0-25-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 CurrentDesktop: KDE Date: Tue Jan 16 14:14:26 2018 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2017-01-05 (375 days ago) InstallationMedia: Kubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1) IpRoute: default via 192.168.1.1 dev wlo1 proto static metric 600 169.254.0.0/16 dev wlo1 scope link metric 1000 192.168.1.0/24 dev wlo1 proto kernel scope link src 192.168.1.80 metric 600 192.168.30.0/24 dev vpn_vectrobe proto kernel scope link src 192.168.30.11 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true ProcEnviron: LANGUAGE=en_AU:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_AU.UTF-8 SHELL=/bin/bash SourcePackage: network-manager UpgradeStatus: Upgraded to artful on 2018-01-15 (0 days ago) nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.8.4 connected started full enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1743489/+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
