Iwlwifi crash during heavy network load (Intel 7260 rev bb)

network
iwlwifi
crash

#1

Heavy network load (e.g. torrent) renders the network driver inoperable: wireless networking just hangs. Restarting the laptop solves the issue.

journalctl | grep iwlwifi:

nov 14 13:04:38 XPS kernel:  intel_wmi_thunderbolt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel mxm_wmi pcbc snd_hda_intel dell_laptop iwlwifi dell_smbios snd_hda_codec irqbypass i2c_algo_bit dell_wmi_descriptor drm_kms_helper aesni_intel aes_x86_64 crypto_simd cryptd glue_helper dcdbas intel_cstate snd_hda_core cfg80211 drm snd_hwdep snd_pcm psmouse intel_uncore snd_timer intel_rapl_perf snd input_leds pcspkr rtsx_pci_ms intel_gtt soundcore rfkill memstick agpgart i2c_i801 mei_me syscopyarea tpm_tis sysfillrect mei idma64 tpm_tis_core sysimgblt fb_sys_fops tpm processor_thermal_device intel_lpss_pci intel_lpss intel_pch_thermal intel_soc_dts_iosf rng_core i2c_hid squashfs int3403_thermal intel_hid wmi sparse_keymap int3402_thermal battery ac int340x_thermal_zone evdev int3400_thermal acpi_thermal_rel pcc_cpufreq
nov 14 13:04:38 XPS kernel: RIP: 0010:iwl_trans_pcie_grab_nic_access+0x1e1/0x220 [iwlwifi]
nov 14 13:04:38 XPS kernel:  iwl_read_prph+0x32/0x80 [iwlwifi]
nov 14 13:04:38 XPS kernel:  iwl_trans_pcie_log_scd_error+0x139/0x210 [iwlwifi]
nov 14 13:04:38 XPS kernel:  iwl_pcie_txq_stuck_timer+0x44/0x60 [iwlwifi]
nov 14 13:04:38 XPS kernel:  ? iwl_pcie_txq_inc_wr_ptr+0x100/0x100 [iwlwifi]
nov 14 13:04:38 XPS kernel:  ? iwl_pcie_txq_inc_wr_ptr+0x100/0x100 [iwlwifi]
nov 14 13:04:38 XPS kernel:  ? iwl_pcie_txq_inc_wr_ptr+0x100/0x100 [iwlwifi]
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: iwlwifi transaction failed, dumping registers
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: iwlwifi device config registers:
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: 00000000: 08b18086 00100000 028000bb 00000000 00000004 00000000 00000000 00000000
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: 00000020: 00000000 00000000 00000000 c4708086 00000000 000000c8 00000000 00000100
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: iwlwifi device memory mapped registers:
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: 00000000: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: 00000020: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: iwlwifi device AER capability structure:
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: 00000000: 14010001 00100000 00000000 00462031 00003140 00002000 00000014 40000001
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: 00000020: 0000000f ddc00460 00000000
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: iwlwifi parent port (0000:00:1c.0) config registers:
nov 14 13:04:38 XPS kernel: iwlwifi 0000:00:1c.0: 00000000: a1108086 00100007 060400f1 00810000 00000000 00000000 00020200 200000f0
nov 14 13:04:38 XPS kernel: iwlwifi 0000:00:1c.0: 00000020: ddc0ddc0 0001fff1 00000000 00000000 00000000 00000040 00000000 001001ff
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: iwlwifi root port (0000:00:1c.0) AER cap structure:
nov 14 13:04:38 XPS kernel: iwlwifi 0000:00:1c.0: 00000000: 14010001 00000000 00010000 00060011 000011c1 00002000 00000000 00000000
nov 14 13:04:38 XPS kernel: iwlwifi 0000:00:1c.0: 00000020: 00000000 00000000 00000000 00000000 00000000 00000000
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: Queue 12 is active on fifo 2 and stuck for 10000 ms. SW [145, 54] HW [90, 90] FH TRB=0x05a5a5a5a
nov 14 13:04:38 XPS kernel: iwlwifi 0000:02:00.0: Queue 11 is active on fifo 2 and stuck for 10000 ms. SW [71, 91] HW [90, 90] FH TRB=0x05a5a5a5a
nov 14 14:05:37 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:05:37 XPS kernel: iwlwifi 0000:02:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5
nov 14 14:05:37 XPS kernel: iwlwifi 0000:02:00.0: Scan failed! ret -5
nov 14 14:05:42 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:05:42 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 14 14:05:42 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 14 14:05:51 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 14 14:05:52 XPS kernel: iwlwifi 0000:02:00.0: Queue 10 is active on fifo 2 and stuck for 10000 ms. SW [202, 207] HW [90, 90] FH TRB=0x05a5a5a5a
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending SCD_QUEUE_CFG: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to disable queue 2 (ret=-5)
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending REMOVE_STA: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to remove station. Id=2
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed sending remove station
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending BINDING_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to send binding (action:3): -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending PHY_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: PHY ctxt cmd error. ret=-5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_PM_POWER_TABLE: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to remove MAC context: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
nov 14 14:06:11 XPS kernel: iwlwifi 0000:02:00.0: flush request fail
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 5
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Queue 5 is active on fifo 2 and stuck for 10000 ms. SW [11, 12] HW [90, 90] FH TRB=0x05a5a5a5a
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
nov 14 14:06:13 XPS kernel: iwlwifi 0000:02:00.0: Couldn't flush the AGG queue
nov 14 14:06:15 XPS kernel: iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 11
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Queue 11 is active on fifo 2 and stuck for 10000 ms. SW [71, 40] HW [90, 90] FH TRB=0x05a5a5a5a
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
nov 14 14:06:16 XPS kernel: iwlwifi 0000:02:00.0: Couldn't flush the AGG queue
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 12
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Queue 12 is active on fifo 2 and stuck for 10000 ms. SW [145, 114] HW [90, 90] FH TRB=0x05a5a5a5a
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
nov 14 14:06:18 XPS kernel: iwlwifi 0000:02:00.0: Couldn't flush the AGG queue
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 10
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Queue 10 is active on fifo 2 and stuck for 10000 ms. SW [202, 207] HW [90, 90] FH TRB=0x05a5a5a5a
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA_KEY: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending REPLY_BEACON_FILTERING_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: WARNING: CPU: 1 PID: 1018 at drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c:2956 iwl_mvm_mac_sta_state+0x4af/0x680 [iwlmvm]
nov 14 14:06:20 XPS kernel:  intel_wmi_thunderbolt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel mxm_wmi pcbc snd_hda_intel dell_laptop iwlwifi dell_smbios snd_hda_codec irqbypass i2c_algo_bit dell_wmi_descriptor drm_kms_helper aesni_intel aes_x86_64 crypto_simd cryptd glue_helper dcdbas intel_cstate snd_hda_core cfg80211 drm snd_hwdep snd_pcm psmouse intel_uncore snd_timer intel_rapl_perf snd input_leds pcspkr rtsx_pci_ms intel_gtt soundcore rfkill memstick agpgart i2c_i801 mei_me syscopyarea tpm_tis sysfillrect mei idma64 tpm_tis_core sysimgblt fb_sys_fops tpm processor_thermal_device intel_lpss_pci intel_lpss intel_pch_thermal intel_soc_dts_iosf rng_core i2c_hid squashfs int3403_thermal intel_hid wmi sparse_keymap int3402_thermal battery ac int340x_thermal_zone evdev int3400_thermal acpi_thermal_rel pcc_cpufreq
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel:  intel_wmi_thunderbolt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel mxm_wmi pcbc snd_hda_intel dell_laptop iwlwifi dell_smbios snd_hda_codec irqbypass i2c_algo_bit dell_wmi_descriptor drm_kms_helper aesni_intel aes_x86_64 crypto_simd cryptd glue_helper dcdbas intel_cstate snd_hda_core cfg80211 drm snd_hwdep snd_pcm psmouse intel_uncore snd_timer intel_rapl_perf snd input_leds pcspkr rtsx_pci_ms intel_gtt soundcore rfkill memstick agpgart i2c_i801 mei_me syscopyarea tpm_tis sysfillrect mei idma64 tpm_tis_core sysimgblt fb_sys_fops tpm processor_thermal_device intel_lpss_pci intel_lpss intel_pch_thermal intel_soc_dts_iosf rng_core i2c_hid squashfs int3403_thermal intel_hid wmi sparse_keymap int3402_thermal battery ac int340x_thermal_zone evdev int3400_thermal acpi_thermal_rel pcc_cpufreq
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to send MAC context (action:2): -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: failed to update MAC 10:4a:7d:11:aa:c1
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending REPLY_SF_CFG_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: WARNING: CPU: 1 PID: 1018 at drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c:2176 iwl_mvm_bss_info_changed+0x880/0x9d0 [iwlmvm]
nov 14 14:06:20 XPS kernel:  intel_wmi_thunderbolt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel mxm_wmi pcbc snd_hda_intel dell_laptop iwlwifi dell_smbios snd_hda_codec irqbypass i2c_algo_bit dell_wmi_descriptor drm_kms_helper aesni_intel aes_x86_64 crypto_simd cryptd glue_helper dcdbas intel_cstate snd_hda_core cfg80211 drm snd_hwdep snd_pcm psmouse intel_uncore snd_timer intel_rapl_perf snd input_leds pcspkr rtsx_pci_ms intel_gtt soundcore rfkill memstick agpgart i2c_i801 mei_me syscopyarea tpm_tis sysfillrect mei idma64 tpm_tis_core sysimgblt fb_sys_fops tpm processor_thermal_device intel_lpss_pci intel_lpss intel_pch_thermal intel_soc_dts_iosf rng_core i2c_hid squashfs int3403_thermal intel_hid wmi sparse_keymap int3402_thermal battery ac int340x_thermal_zone evdev int3400_thermal acpi_thermal_rel pcc_cpufreq
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending REMOVE_STA: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to remove station. Id=0
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: failed to remove AP station
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending TIME_QUOTA_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to send quota: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: failed to update quotas
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to send MAC context (action:2): -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: failed to update MAC 10:4a:7d:11:aa:c1 (clear after unassoc)
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_PM_POWER_TABLE: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: failed to update power mode
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending TIME_QUOTA_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to send quota: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending BINDING_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to send binding (action:3): -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_PM_POWER_TABLE: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to send MAC context (action:2): -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: failed to update MAC 10:4a:7d:11:aa:c1
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: Error sending PHY_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 14 14:06:20 XPS kernel: iwlwifi 0000:02:00.0: PHY ctxt cmd error. ret=-5
nov 14 14:06:21 XPS kernel: iwlwifi 0000:02:00.0: Queue 5 is active on fifo 2 and stuck for 10000 ms. SW [11, 12] HW [90, 90] FH TRB=0x05a5a5a5a
nov 14 14:06:22 XPS kernel: iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 5
nov 14 14:06:22 XPS kernel: iwlwifi 0000:02:00.0: Queue 5 is active on fifo 2 and stuck for 10000 ms. SW [11, 12] HW [90, 90] FH TRB=0x05a5a5a5a

lspci:

02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

#2

Here is a discussion about the iwlwifi that is used by your card and the one from this post:


Go trough it, and add here what you have done so far, as there are some suggestions you could follow too.


#3

Try this temporary test to fix slow speeds and (or) random disconnections.

Issue this command:

sudo sysctl net.ipv4.tcp_ecn=0

If your connectivity improves, then make the solution permanent.

To set the ECN to 0 permanently, create the following file:

/etc/sysctl.d/99-ecn.conf

Add the following entry to the /etc/sysctl.d/99-ecn.conf file:

net.ipv4.tcp_ecn=0

#4

Thanks for the replies! I will try the mentioned workaround in the other topic.

Meanwhile I gave kernel 4.4 a try and the issue did not come up. The ucode version for this card is -17 in kernel 4.14 and up, but it is -13 in kernel 4.4 - so this might be a bug in iwlwifi driver.

Can I lock a ucode version for future kernel releases?


#5

Ok, I don’t know what gone wrong in the kernel, but it seems a complete disaster: the bug happens even on kernel 4.4.

I tried all the mentioned workarounds and options, to no avail:

$ cat /etc/sysctl.d/99-ecn.conf 
net.ipv4.tcp_ecn=0
$ cat /etc/modprobe.d/iwlwifi.conf  
options iwlwifi power_save=0
options iwlwifi swcrypto=1
options iwlwifi 11n_disable=8
options iwlwifi bt_coex_active=0
uname -ar
Linux XPS 4.19.4-1-MANJARO #1 SMP PREEMPT Fri Nov 23 18:23:26 UTC 2018 x86_64 GNU/Linux
$ journalctl | grep iwlwifi
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 28 19:02:49 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Error sending SCD_QUEUE_CFG: enqueue_hcmd failed: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to disable queue 2 (ret=-5)
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Error sending REMOVE_STA: enqueue_hcmd failed: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to remove station. Id=2
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed sending remove station
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Error sending BINDING_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to send binding (action:3): -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Error sending PHY_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: PHY ctxt cmd error. ret=-5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_PM_POWER_TABLE: enqueue_hcmd failed: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to remove MAC context: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: Error sending MCAST_FILTER_CMD: enqueue_hcmd failed: -5
nov 28 19:02:53 XPS kernel: iwlwifi 0000:02:00.0: mcast filter cmd error. ret=-5
nov 28 19:02:54 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:54 XPS kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
nov 28 19:02:54 XPS kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
nov 28 19:02:54 XPS kernel: iwlwifi 0000:02:00.0: flush request fail
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 5
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Queue 5 is active on fifo 2 and stuck for 10000 ms. SW [33, 34] HW [90, 90] FH TRB=0x05a5a5a5a
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
nov 28 19:02:56 XPS kernel: iwlwifi 0000:02:00.0: Couldn't flush the AGG queue
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 11
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Queue 11 is active on fifo 2 and stuck for 10000 ms. SW [129, 28] HW [90, 90] FH TRB=0x05a5a5a5a
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending REPLY_BEACON_FILTERING_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: WARNING: CPU: 5 PID: 913 at drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c:2959 iwl_mvm_mac_sta_state+0x4af/0x680 [iwlmvm]
nov 28 19:02:58 XPS kernel:  snd_hda_codec kvm wmi_bmof dell_wmi vfat fat intel_wmi_thunderbolt mxm_wmi snd_hda_core dell_laptop i2c_algo_bit iwlwifi irqbypass drm_kms_helper snd_hwdep crct10dif_pclmul crc32_pclmul dell_smbios ghash_clmulni_intel pcbc snd_pcm dell_wmi_descriptor dcdbas aesni_intel drm cfg80211 aes_x86_64 crypto_simd cryptd glue_helper psmouse intel_cstate intel_uncore intel_rapl_perf snd_timer tpm_tis input_leds intel_gtt tpm_tis_core pcspkr tpm idma64 snd agpgart i2c_i801 syscopyarea i2c_hid soundcore mei_me intel_hid sysfillrect intel_lpss_pci rtsx_pci_ms sysimgblt processor_thermal_device sparse_keymap mei rfkill memstick fb_sys_fops hid intel_lpss intel_pch_thermal rng_core intel_soc_dts_iosf battery int3403_thermal wmi evdev mac_hid int3402_thermal int340x_thermal_zone ac int3400_thermal pcc_cpufreq
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending ADD_STA: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel:  snd_hda_codec kvm wmi_bmof dell_wmi vfat fat intel_wmi_thunderbolt mxm_wmi snd_hda_core dell_laptop i2c_algo_bit iwlwifi irqbypass drm_kms_helper snd_hwdep crct10dif_pclmul crc32_pclmul dell_smbios ghash_clmulni_intel pcbc snd_pcm dell_wmi_descriptor dcdbas aesni_intel drm cfg80211 aes_x86_64 crypto_simd cryptd glue_helper psmouse intel_cstate intel_uncore intel_rapl_perf snd_timer tpm_tis input_leds intel_gtt tpm_tis_core pcspkr tpm idma64 snd agpgart i2c_i801 syscopyarea i2c_hid soundcore mei_me intel_hid sysfillrect intel_lpss_pci rtsx_pci_ms sysimgblt processor_thermal_device sparse_keymap mei rfkill memstick fb_sys_fops hid intel_lpss intel_pch_thermal rng_core intel_soc_dts_iosf battery int3403_thermal wmi evdev mac_hid int3402_thermal int340x_thermal_zone ac int3400_thermal pcc_cpufreq
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to send MAC context (action:2): -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: failed to update MAC 10:4a:7d:11:aa:c1
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending REPLY_SF_CFG_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: WARNING: CPU: 5 PID: 913 at drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c:2179 iwl_mvm_bss_info_changed+0x880/0x9d0 [iwlmvm]
nov 28 19:02:58 XPS kernel:  snd_hda_codec kvm wmi_bmof dell_wmi vfat fat intel_wmi_thunderbolt mxm_wmi snd_hda_core dell_laptop i2c_algo_bit iwlwifi irqbypass drm_kms_helper snd_hwdep crct10dif_pclmul crc32_pclmul dell_smbios ghash_clmulni_intel pcbc snd_pcm dell_wmi_descriptor dcdbas aesni_intel drm cfg80211 aes_x86_64 crypto_simd cryptd glue_helper psmouse intel_cstate intel_uncore intel_rapl_perf snd_timer tpm_tis input_leds intel_gtt tpm_tis_core pcspkr tpm idma64 snd agpgart i2c_i801 syscopyarea i2c_hid soundcore mei_me intel_hid sysfillrect intel_lpss_pci rtsx_pci_ms sysimgblt processor_thermal_device sparse_keymap mei rfkill memstick fb_sys_fops hid intel_lpss intel_pch_thermal rng_core intel_soc_dts_iosf battery int3403_thermal wmi evdev mac_hid int3402_thermal int340x_thermal_zone ac int3400_thermal pcc_cpufreq
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending REMOVE_STA: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to remove station. Id=0
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: failed to remove AP station
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending TIME_QUOTA_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to send quota: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: failed to update quotas
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to send MAC context (action:2): -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: failed to update MAC 10:4a:7d:11:aa:c1 (clear after unassoc)
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_PM_POWER_TABLE: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: failed to update power mode
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending TIME_QUOTA_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to send quota: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending BINDING_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to send binding (action:3): -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_PM_POWER_TABLE: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending MAC_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to send MAC context (action:2): -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: failed to update MAC 10:4a:7d:11:aa:c1
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: Error sending PHY_CONTEXT_CMD: enqueue_hcmd failed: -5
nov 28 19:02:58 XPS kernel: iwlwifi 0000:02:00.0: PHY ctxt cmd error. ret=-5
nov 28 19:02:59 XPS kernel: iwlwifi 0000:02:00.0: Queue 10 is active on fifo 2 and stuck for 10000 ms. SW [3, 6] HW [90, 90] FH TRB=0x05a5a5a5a
nov 28 19:03:00 XPS kernel: iwlwifi 0000:02:00.0: fail to flush all tx fifo queues Q 5
nov 28 19:03:00 XPS kernel: iwlwifi 0000:02:00.0: Queue 5 is active on fifo 2 and stuck for 10000 ms. SW [33, 34] HW [90, 90] FH TRB=0x05a5a5a5a

What should I do now? I tried every option I know. :frowning_face:


#6

Well, it didn’t got any better - might be a hardware fault?


#7

Try these options:

Create the following file:

/etc/modprobe.d/iwlwifi.conf 

Add the following content:

options iwlwifi 11n_disable=1
options iwlwifi swcrypto=1
options iwlwifi 11n_disable=8
options iwlwifi bt_coex_active=0

Reboot.

I would also suggest installing and testing different kernels. Try at least these different kernels 4.14, 4.18, 4.19 and 4.20. Install kernels through Manjaro Settings Manager, and always have at least two kernels installed at all times for safety.

You really need to find the root of this issue to get a proper fix for this. As a bit of a workaround you could probably prevent having to restart by scripting a full network shutdown/restart. This doesn’t solve your problem, but it might at least get rid of the need to reboot when the connection is lost.

You may want to try severely limiting the number of global connections that are permitted in your bittorent client, (if these drops are often a result of downloading torrents).

Also, if you can change your connection settings in your router configuration, try lowering the channel number to 36. Please read this router setup and troubleshooting guide:

Please post the output of the following command:

hwinfo --netcard --wlan --bluetooth | grep -Ei "model\:|driver\:|status\:|cmd\:|file\:|detected\:" | grep -v "Config Status" 

#8

Dear tbg,

thanks for the reply! Below you will find the output of the command:

  Model: "Intel Dual Band Wireless-AC 7260"
  Driver: "iwlwifi"
  Device File: wlp2s0
  Link detected: yes
    Driver Status: iwlwifi is active
    Driver Activation Cmd: "modprobe iwlwifi"
  Model: "Intel Bluetooth Device"
  Driver: "btusb"
    Driver Status: btusb is active
    Driver Activation Cmd: "modprobe btusb"

I already tested with kernel 4.19, 4.14, 4.4 but it happened on all of them.

My /etc/modprobe.d/iwlwifi.conf is the following:

options iwlwifi power_save=0
options iwlwifi swcrypto=1
options iwlwifi 11n_disable=8
options iwlwifi bt_coex_active=0

Now I tried downgrading the BIOS from 1.9.0 to 1.8.0, we will see if this solves the problem.


#9

You need to test kernels 4.18 and 4.20.

You also did not test the alternate options I posted?


#10

I tested all LTS kernel releases, I am not really into switching to non-LTS versions.

I didn’t changed any router settings as it should work, because it worked earlier, and the channels are good (tested with LinSSID).

I don’t want to judge too early but it seems that the cause of the errors was the BIOS upgrade from 1.8.0 to 1.9.0.


#11

It’s possible it was a faulty bios upgrade. However, I tend to think all the posts about poor connectivity with this adapter lay the odds against it.

Good luck with your network issue. I hope you have it resolved.


#12

Thanks!

I tried to remove the options from my /etc/modprobe.d/iwlwifi.conf file, but shortly after that the error happened again. So one of those options solves the issue. Just had to find out which one. :slight_smile:


#13

This would be the most likely fix. This option completely disables the “N” band.


#14

Thank you for your recommendation but this is completely sub-optimal as it will limit the wifi speed to ~50 Mbps, which is, well… slow. I am looking for a permanent and 100% working fix, not a ducktape.


#15

As a follow-up: I tested the following kernels:

4.4 - BUG PRESENT
4.9 - BUG PRESENT
4.14 - BUG PRESENT
4.18 - BUG PRESENT
4.19 - BUG PRESENT
4.20 - BUG PRESENT

/etc/modprobe.d/iwlwifi.conf

# Power saving 
options iwlwifi power_save=0 
options iwlwifi d0i3_disable=0 
options iwlwifi uapsd_disable=0

# Misc
options iwlwifi 11n_disable=8
options iwlwifi swcrypto=1
options iwlwifi bt_coex_active=0

#16

I successfully narrowed the problem: it happens when the channel width is greater than 20 MHz (e.g. 40 or 80 MHz).

The options copy-pasted above are still in place.


#17

I tried with a live Ubuntu 18.10 and the error did happen.

I switched back to the original Broadcom chip (BCM20703A1), works flawlessly.