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My laptop wifi has started acting up. I have tested with both the latest Archlinux kernel and with the LTS kernel, and tried a couple of firmware versions.
[ 609.695860] Intel(R) Wireless WiFi driver for Linux
[ 609.695861] Copyright(c) 2003- 2015 Intel Corporation
[ 609.698526] iwlwifi 0000:3d:00.0: loaded firmware version 17.459231.0 op_mode iwlmvm
[ 609.702379] iwlwifi 0000:3d:00.0: Detected Intel(R) Dual Band Wireless N 7260, REV=0x144
[ 609.705342] iwlwifi 0000:3d:00.0: L1 Enabled - LTR Enabled
[ 609.708049] iwlwifi 0000:3d:00.0: L1 Enabled - LTR Enabled
[ 609.931517] ieee80211 phy3: Selected rate control algorithm 'iwl-mvm-rs'
[ 609.937815] iwlwifi 0000:3d:00.0 wlp61s0: renamed from wlan0
[ 610.025037] iwlwifi 0000:3d:00.0: L1 Enabled - LTR Enabled
[ 610.025562] iwlwifi 0000:3d:00.0: L1 Enabled - LTR Enabled
[ 610.226908] iwlwifi 0000:3d:00.0: FW Error notification: type 0x00000000 cmd_id 0x77
[ 610.226910] iwlwifi 0000:3d:00.0: FW Error notification: seq 0x0908 service 0x00000077
[ 610.226912] iwlwifi 0000:3d:00.0: FW Error notification: timestamp 0x 2F24A
[ 610.227008] iwlwifi 0000:3d:00.0: Microcode SW error detected. Restarting 0x2000000.
[ 610.227010] iwlwifi 0000:3d:00.0: CSR values:
[ 610.227011] iwlwifi 0000:3d:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
[ 610.227093] iwlwifi 0000:3d:00.0: CSR_HW_IF_CONFIG_REG: 0X40489204
[ 610.227180] iwlwifi 0000:3d:00.0: CSR_INT_COALESCING: 0X8000ff40
[ 610.227257] iwlwifi 0000:3d:00.0: CSR_INT: 0X00000000
[ 610.227261] iwlwifi 0000:3d:00.0: CSR_INT_MASK: 0X00000000
[ 610.227266] iwlwifi 0000:3d:00.0: CSR_FH_INT_STATUS: 0X00000000
[ 610.227270] iwlwifi 0000:3d:00.0: CSR_GPIO_IN: 0X00000000
[ 610.227274] iwlwifi 0000:3d:00.0: CSR_RESET: 0X00000000
[ 610.227279] iwlwifi 0000:3d:00.0: CSR_GP_CNTRL: 0X080403cd
[ 610.227283] iwlwifi 0000:3d:00.0: CSR_HW_REV: 0X00000144
[ 610.227288] iwlwifi 0000:3d:00.0: CSR_EEPROM_REG: 0X00000000
[ 610.227292] iwlwifi 0000:3d:00.0: CSR_EEPROM_GP: 0X80000000
[ 610.227297] iwlwifi 0000:3d:00.0: CSR_OTP_GP_REG: 0X803a0000
[ 610.227301] iwlwifi 0000:3d:00.0: CSR_GIO_REG: 0X00080042
[ 610.227306] iwlwifi 0000:3d:00.0: CSR_GP_UCODE_REG: 0X00000000
[ 610.227310] iwlwifi 0000:3d:00.0: CSR_GP_DRIVER_REG: 0X00000000
[ 610.227314] iwlwifi 0000:3d:00.0: CSR_UCODE_DRV_GP1: 0X00000000
[ 610.227319] iwlwifi 0000:3d:00.0: CSR_UCODE_DRV_GP2: 0X00000000
[ 610.227323] iwlwifi 0000:3d:00.0: CSR_LED_REG: 0X00000060
[ 610.227328] iwlwifi 0000:3d:00.0: CSR_DRAM_INT_TBL_REG: 0X88440cf3
[ 610.227332] iwlwifi 0000:3d:00.0: CSR_GIO_CHICKEN_BITS: 0X27800200
[ 610.227336] iwlwifi 0000:3d:00.0: CSR_ANA_PLL_CFG: 0Xd55555d5
[ 610.227341] iwlwifi 0000:3d:00.0: CSR_MONITOR_STATUS_REG: 0X3d0c01bd
[ 610.227345] iwlwifi 0000:3d:00.0: CSR_HW_REV_WA_REG: 0X0001001a
[ 610.227350] iwlwifi 0000:3d:00.0: CSR_DBG_HPET_MEM_REG: 0Xffff0000
[ 610.227350] iwlwifi 0000:3d:00.0: FH register values:
[ 610.227429] iwlwifi 0000:3d:00.0: FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X48877600
[ 610.227506] iwlwifi 0000:3d:00.0: FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X044e2400
[ 610.227511] iwlwifi 0000:3d:00.0: FH_RSCSR_CHNL0_WPTR: 0X00000018
[ 610.227516] iwlwifi 0000:3d:00.0: FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
[ 610.227520] iwlwifi 0000:3d:00.0: FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
[ 610.227525] iwlwifi 0000:3d:00.0: FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
[ 610.227530] iwlwifi 0000:3d:00.0: FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
[ 610.227535] iwlwifi 0000:3d:00.0: FH_TSSR_TX_STATUS_REG: 0X07ff0001
[ 610.227539] iwlwifi 0000:3d:00.0: FH_TSSR_TX_ERROR_REG: 0X00000000
[ 610.227670] iwlwifi 0000:3d:00.0: Start IWL Error Log Dump:
[ 610.227671] iwlwifi 0000:3d:00.0: Status: 0x00000000, count: 6
[ 610.227672] iwlwifi 0000:3d:00.0: Loaded firmware version: 17.459231.0
[ 610.227673] iwlwifi 0000:3d:00.0: 0x00000038 | BAD_COMMAND
[ 610.227674] iwlwifi 0000:3d:00.0: 0x000002F0 | trm_hw_status0
[ 610.227675] iwlwifi 0000:3d:00.0: 0x00000000 | trm_hw_status1
[ 610.227676] iwlwifi 0000:3d:00.0: 0x0000099A | branchlink2
[ 610.227677] iwlwifi 0000:3d:00.0: 0x0000D340 | interruptlink1
[ 610.227677] iwlwifi 0000:3d:00.0: 0x00000000 | interruptlink2
[ 610.227678] iwlwifi 0000:3d:00.0: 0xDEADBEEF | data1
[ 610.227679] iwlwifi 0000:3d:00.0: 0xDEADBEEF | data2
[ 610.227680] iwlwifi 0000:3d:00.0: 0xDEADBEEF | data3
[ 610.227680] iwlwifi 0000:3d:00.0: 0x003D0DB1 | beacon time
[ 610.227681] iwlwifi 0000:3d:00.0: 0x0002F24D | tsf low
[ 610.227682] iwlwifi 0000:3d:00.0: 0x00000000 | tsf hi
[ 610.227683] iwlwifi 0000:3d:00.0: 0x00000000 | time gp1
[ 610.227683] iwlwifi 0000:3d:00.0: 0x0002F24E | time gp2
[ 610.227684] iwlwifi 0000:3d:00.0: 0x00000000 | uCode revision type
[ 610.227685] iwlwifi 0000:3d:00.0: 0x00000011 | uCode version major
[ 610.227686] iwlwifi 0000:3d:00.0: 0x000701DF | uCode version minor
[ 610.227687] iwlwifi 0000:3d:00.0: 0x00000144 | hw version
[ 610.227687] iwlwifi 0000:3d:00.0: 0x40489204 | board version
[ 610.227688] iwlwifi 0000:3d:00.0: 0x09080177 | hcmd
[ 610.227689] iwlwifi 0000:3d:00.0: 0x00022080 | isr0
[ 610.227690] iwlwifi 0000:3d:00.0: 0x00000000 | isr1
[ 610.227690] iwlwifi 0000:3d:00.0: 0x00000002 | isr2
[ 610.227691] iwlwifi 0000:3d:00.0: 0x004000C0 | isr3
[ 610.227692] iwlwifi 0000:3d:00.0: 0x00000000 | isr4
[ 610.227693] iwlwifi 0000:3d:00.0: 0x01000112 | last cmd Id
[ 610.227693] iwlwifi 0000:3d:00.0: 0x00000000 | wait_event
[ 610.227694] iwlwifi 0000:3d:00.0: 0x0000BACF | l2p_control
[ 610.227695] iwlwifi 0000:3d:00.0: 0x00000000 | l2p_duration
[ 610.227696] iwlwifi 0000:3d:00.0: 0x00000000 | l2p_mhvalid
[ 610.227697] iwlwifi 0000:3d:00.0: 0x00000000 | l2p_addr_match
[ 610.227697] iwlwifi 0000:3d:00.0: 0x00000007 | lmpm_pmg_sel
[ 610.227698] iwlwifi 0000:3d:00.0: 0x11011743 | timestamp
[ 610.227699] iwlwifi 0000:3d:00.0: 0x00001820 | flow_handler
[ 610.227725] iwlwifi 0000:3d:00.0: FW error in SYNC CMD POWER_TABLE_CMD
[ 610.227738] CPU: 6 PID: 323 Comm: systemd-network Not tainted 4.9.56-1-lts #1
[ 610.227739] Hardware name: Hewlett-Packard HP ZBook 15 G2/2253, BIOS M70 Ver. 01.12 09/23/2015
[ 610.227740] ffffc90001f43670 ffffffff812f9edd ffff88043e5d0018 ffffc90001f43730
[ 610.227741] ffffc90001f436e0 ffffffffa07629bb ffff88043e5d7e30 ffffffff00000000
[ 610.227742] ffff880486794740 ffffffff810c1880 ffffc90001f436a0 ffffc90001f436a0
[ 610.227744] Call Trace:
[ 610.227749] [<ffffffff812f9edd>] dump_stack+0x63/0x86
[ 610.227754] [<ffffffffa07629bb>] iwl_trans_pcie_send_hcmd+0x50b/0x550 [iwlwifi]
[ 610.227756] [<ffffffff810c1880>] ? wake_bit_function+0x60/0x60
[ 610.227758] [<ffffffffa0769885>] iwl_trans_send_cmd+0x55/0xb0 [iwlwifi]
[ 610.227763] [<ffffffffa0b8af99>] iwl_mvm_send_cmd+0x29/0x80 [iwlmvm]
[ 610.227765] [<ffffffffa0b8b041>] iwl_mvm_send_cmd_pdu+0x51/0x70 [iwlmvm]
[ 610.227768] [<ffffffffa0ba394d>] iwl_mvm_power_update_device+0x7d/0xb0 [iwlmvm]
[ 610.227770] [<ffffffffa0ba39e4>] iwl_mvm_power_set_ps+0x64/0x90 [iwlmvm]
[ 610.227772] [<ffffffffa0ba3d47>] iwl_mvm_power_update_mac+0x117/0x200 [iwlmvm]
[ 610.227774] [<ffffffffa0b83c06>] iwl_mvm_mac_add_interface+0x146/0x270 [iwlmvm]
[ 610.227785] [<ffffffffa0ab8734>] drv_add_interface+0x44/0x130 [mac80211]
[ 610.227789] [<ffffffffa0acdb5f>] ieee80211_do_open+0x34f/0x900 [mac80211]
[ 610.227793] [<ffffffffa0ace162>] ieee80211_open+0x52/0x60 [mac80211]
[ 610.227795] [<ffffffff814eadf4>] __dev_open+0xc4/0x150
[ 610.227796] [<ffffffff815fd4ca>] ? _raw_spin_unlock_bh+0x1a/0x20
[ 610.227797] [<ffffffff814eb11d>] __dev_change_flags+0x9d/0x160
[ 610.227798] [<ffffffff814eb209>] dev_change_flags+0x29/0x60
[ 610.227799] [<ffffffff814fbd07>] do_setlink+0x407/0xe20
[ 610.227801] [<ffffffff81328819>] ? nla_parse+0x99/0x100
[ 610.227803] [<ffffffff8159bd3c>] ? inet6_validate_link_af+0x4c/0x70
[ 610.227804] [<ffffffff814fc7f3>] rtnl_setlink+0xd3/0x120
[ 610.227806] [<ffffffff8151bbbb>] ? __netlink_ns_capable+0x3b/0x40
[ 610.227806] [<ffffffff814fed6b>] rtnetlink_rcv_msg+0x19b/0x1f0
[ 610.227808] [<ffffffff811e6495>] ? __kmalloc_node_track_caller+0x35/0x280
[ 610.227810] [<ffffffff814d3437>] ? __alloc_skb+0x87/0x200
[ 610.227810] [<ffffffff814febd0>] ? rtnl_newlink+0x880/0x880
[ 610.227811] [<ffffffff8151f5e1>] netlink_rcv_skb+0x51/0xe0
[ 610.227813] [<ffffffff814fb148>] rtnetlink_rcv+0x28/0x30
[ 610.227814] [<ffffffff8151ef50>] netlink_unicast+0x190/0x240
[ 610.227815] [<ffffffff8151f40a>] netlink_sendmsg+0x34a/0x3a0
[ 610.227816] [<ffffffff814c92a7>] sock_sendmsg+0x17/0x30
[ 610.227817] [<ffffffff814ca6bf>] SyS_sendto+0xcf/0x180
[ 610.227819] [<ffffffff811226c5>] ? __secure_computing+0x35/0xa0
[ 610.227821] [<ffffffff8100385d>] ? syscall_trace_enter+0xdd/0x290
[ 610.227822] [<ffffffff81003b04>] do_syscall_64+0x54/0xc0
[ 610.227823] [<ffffffff815fd86b>] entry_SYSCALL64_slow_path+0x25/0x25
[ 610.227824] iwlwifi 0000:3d:00.0: Failed to remove MAC context: -5
[ 610.227826] iwlwifi 0000:3d:00.0: Failed to disable queue 0 (ret=-5)
[ 610.227827] iwlwifi 0000:3d:00.0: Failed to disable queue 1 (ret=-5)
[ 610.227828] iwlwifi 0000:3d:00.0: Failed to disable queue 2 (ret=-5)
[ 610.227829] iwlwifi 0000:3d:00.0: Failed to disable queue 3 (ret=-5)My boot parameters are
BOOT_IMAGE=/vmlinuz-linux-lts root=XXX LANG=en_US.UTF-8 acpi_backlight=vendor intel_iommu=off quietAny ideas what to try next? Funny thing is that the latest Fedora live image works fine and has the same firmware version. I would suspect that the iwlwifi driver is somehow broken, but this is the lts kernel.
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