Public bug reported:

Ubuntu version:
Description:    Ubuntu Eoan Ermine (development branch)
Release:        19.10


System type:
    description: Notebook
    product: Precision 5530 (087D)
    vendor: Dell Inc.


Hardware having issue:
(wireless card info from previous working kernel)
           *-network
                description: Wireless interface
                product: Wireless-AC 9260
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:3b:00.0
                logical name: wlp59s0
                version: 29
                serial: 48:89:e7:d5:ab:b5
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress msix bus_master cap_list 
ethernet physical wireless
                configuration: broadcast=yes driver=iwlwifi 
driverversion=5.0.0-20-generic firmware=43.95eb4e97.0 ip=10.80.13.232 latency=0 
link=yes multicast=yes wireless=IEEE 802.11
                resources: irq:16 memory:ed400000-ed403fff


Grub config with settings for Dell laptop hardware set:
/etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
#GRUB_CMDLINE_LINUX_DEFAULT="nosplash"
GRUB_CMDLINE_LINUX="nouveau.blacklist=1 acpi_rev_override=1 acpi_osi=Linux 
nouveau.modeset=0 pcie_aspm=force drm.vblankoffdelay=1 scsi_mod.use_blk_mq=1 
nouveau.runpm=0 mem_sleep_default=deep"

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"


Iwlwifi config with 11n disabled, 11n wasn't ever stable before, so left it 
disabled.
/etc/modprobe.d/iwlwifi.conf 
# /etc/modprobe.d/iwlwifi.conf
# iwlwifi will dyamically load either iwldvm or iwlmvm depending on the
# microcode file installed on the system.  When removing iwlwifi, first
# remove the iwl?vm module and then iwlwifi.
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
options iwlwifi 11n_disable=1


Linux-Firmware package = 1.180
Nvidia Driver version = 430.34-0ubuntu2

Issue:
Problem with kernel 5.2.0-8-generic - Wifi firmware fails to load.  Works with 
5.0.0.-20-generic kernel.

Syslog:
Jul 17 15:13:31 Lappy kernel: [   85.319088] iwlwifi 0000:3b:00.0: Microcode SW 
error detected. Restarting 0x0.
Jul 17 15:13:31 Lappy kernel: [   85.320158] iwlwifi 0000:3b:00.0: Start IWL 
Error Log Dump:
Jul 17 15:13:31 Lappy kernel: [   85.320161] iwlwifi 0000:3b:00.0: Status: 
0x00000080, count: 6
Jul 17 15:13:31 Lappy kernel: [   85.320162] iwlwifi 0000:3b:00.0: Loaded 
firmware version: 46.a41adfe7.0
Jul 17 15:13:31 Lappy kernel: [   85.320164] iwlwifi 0000:3b:00.0: 0x00000071 | 
NMI_INTERRUPT_UMAC_FATAL    
Jul 17 15:13:31 Lappy kernel: [   85.320166] iwlwifi 0000:3b:00.0: 0x00A022F0 | 
trm_hw_status0
Jul 17 15:13:31 Lappy kernel: [   85.320167] iwlwifi 0000:3b:00.0: 0x00000000 | 
trm_hw_status1
Jul 17 15:13:31 Lappy kernel: [   85.320168] iwlwifi 0000:3b:00.0: 0x004882F2 | 
branchlink2
Jul 17 15:13:31 Lappy kernel: [   85.320169] iwlwifi 0000:3b:00.0: 0x004793A2 | 
interruptlink1
Jul 17 15:13:31 Lappy kernel: [   85.320171] iwlwifi 0000:3b:00.0: 0x00480EA2 | 
interruptlink2
Jul 17 15:13:31 Lappy kernel: [   85.320172] iwlwifi 0000:3b:00.0: 0x0001A7D2 | 
data1
Jul 17 15:13:31 Lappy kernel: [   85.320173] iwlwifi 0000:3b:00.0: 0x00001000 | 
data2
Jul 17 15:13:31 Lappy kernel: [   85.320174] iwlwifi 0000:3b:00.0: 0xE0000008 | 
data3
Jul 17 15:13:31 Lappy kernel: [   85.320176] iwlwifi 0000:3b:00.0: 0x00000000 | 
beacon time
Jul 17 15:13:31 Lappy kernel: [   85.320177] iwlwifi 0000:3b:00.0: 0x0003ED44 | 
tsf low
Jul 17 15:13:31 Lappy kernel: [   85.320178] iwlwifi 0000:3b:00.0: 0x00000000 | 
tsf hi
Jul 17 15:13:31 Lappy kernel: [   85.320180] iwlwifi 0000:3b:00.0: 0x00000000 | 
time gp1
Jul 17 15:13:31 Lappy kernel: [   85.320181] iwlwifi 0000:3b:00.0: 0x0003ED44 | 
time gp2
Jul 17 15:13:31 Lappy kernel: [   85.320182] iwlwifi 0000:3b:00.0: 0x00000001 | 
uCode revision type
Jul 17 15:13:31 Lappy kernel: [   85.320183] iwlwifi 0000:3b:00.0: 0x0000002E | 
uCode version major
Jul 17 15:13:31 Lappy kernel: [   85.320185] iwlwifi 0000:3b:00.0: 0xA41ADFE7 | 
uCode version minor
Jul 17 15:13:31 Lappy kernel: [   85.320186] iwlwifi 0000:3b:00.0: 0x00000321 | 
hw version
Jul 17 15:13:31 Lappy kernel: [   85.320187] iwlwifi 0000:3b:00.0: 0x00489004 | 
board version
Jul 17 15:13:31 Lappy kernel: [   85.320188] iwlwifi 0000:3b:00.0: 0x00240405 | 
hcmd
Jul 17 15:13:31 Lappy kernel: [   85.320190] iwlwifi 0000:3b:00.0: 0x00022000 | 
isr0
Jul 17 15:13:31 Lappy kernel: [   85.320191] iwlwifi 0000:3b:00.0: 0x00000000 | 
isr1
Jul 17 15:13:31 Lappy kernel: [   85.320192] iwlwifi 0000:3b:00.0: 0x20001802 | 
isr2
Jul 17 15:13:31 Lappy kernel: [   85.320193] iwlwifi 0000:3b:00.0: 0x404000C0 | 
isr3
Jul 17 15:13:31 Lappy kernel: [   85.320195] iwlwifi 0000:3b:00.0: 0x00000000 | 
isr4
Jul 17 15:13:31 Lappy kernel: [   85.320196] iwlwifi 0000:3b:00.0: 0x00240405 | 
last cmd Id
Jul 17 15:13:31 Lappy kernel: [   85.320197] iwlwifi 0000:3b:00.0: 0x0001A7D2 | 
wait_event
Jul 17 15:13:31 Lappy kernel: [   85.320198] iwlwifi 0000:3b:00.0: 0x00000000 | 
l2p_control
Jul 17 15:13:31 Lappy kernel: [   85.320199] iwlwifi 0000:3b:00.0: 0x00000020 | 
l2p_duration
Jul 17 15:13:31 Lappy kernel: [   85.320200] iwlwifi 0000:3b:00.0: 0x00000000 | 
l2p_mhvalid
Jul 17 15:13:31 Lappy kernel: [   85.320202] iwlwifi 0000:3b:00.0: 0x00000000 | 
l2p_addr_match
Jul 17 15:13:31 Lappy kernel: [   85.320203] iwlwifi 0000:3b:00.0: 0x0000000D | 
lmpm_pmg_sel
Jul 17 15:13:31 Lappy kernel: [   85.320204] iwlwifi 0000:3b:00.0: 0x19062027 | 
timestamp
Jul 17 15:13:31 Lappy kernel: [   85.320206] iwlwifi 0000:3b:00.0: 0x00001840 | 
flow_handler
Jul 17 15:13:31 Lappy kernel: [   85.320768] iwlwifi 0000:3b:00.0: Start IWL 
Error Log Dump:
Jul 17 15:13:31 Lappy kernel: [   85.320772] iwlwifi 0000:3b:00.0: Status: 
0x00000080, count: 7
Jul 17 15:13:31 Lappy kernel: [   85.320776] iwlwifi 0000:3b:00.0: 0x20000034 | 
NMI_INTERRUPT_WDG
Jul 17 15:13:31 Lappy kernel: [   85.320779] iwlwifi 0000:3b:00.0: 0x00000000 | 
umac branchlink1
Jul 17 15:13:31 Lappy kernel: [   85.320783] iwlwifi 0000:3b:00.0: 0xC008887A | 
umac branchlink2
Jul 17 15:13:31 Lappy kernel: [   85.320786] iwlwifi 0000:3b:00.0: 0xC0084C80 | 
umac interruptlink1
Jul 17 15:13:31 Lappy kernel: [   85.320789] iwlwifi 0000:3b:00.0: 0xC0080708 | 
umac interruptlink2
Jul 17 15:13:31 Lappy kernel: [   85.320793] iwlwifi 0000:3b:00.0: 0x00000400 | 
umac data1
Jul 17 15:13:31 Lappy kernel: [   85.320796] iwlwifi 0000:3b:00.0: 0xC0080708 | 
umac data2
Jul 17 15:13:31 Lappy kernel: [   85.320800] iwlwifi 0000:3b:00.0: 0xDEADBEEF | 
umac data3
Jul 17 15:13:31 Lappy kernel: [   85.320804] iwlwifi 0000:3b:00.0: 0x0000002E | 
umac major
Jul 17 15:13:31 Lappy kernel: [   85.320805] iwlwifi 0000:3b:00.0: 0xA41ADFE7 | 
umac minor
Jul 17 15:13:31 Lappy kernel: [   85.320807] iwlwifi 0000:3b:00.0: 0x0003ED2B | 
frame pointer
Jul 17 15:13:31 Lappy kernel: [   85.320810] iwlwifi 0000:3b:00.0: 0xC0886C44 | 
stack pointer
Jul 17 15:13:31 Lappy kernel: [   85.320813] iwlwifi 0000:3b:00.0: 0x00240405 | 
last host cmd
Jul 17 15:13:31 Lappy kernel: [   85.320814] iwlwifi 0000:3b:00.0: 0x00004008 | 
isr status reg
Jul 17 15:13:31 Lappy kernel: [   85.320988] iwlwifi 0000:3b:00.0: Fseq 
Registers:
Jul 17 15:13:31 Lappy kernel: [   85.321039] iwlwifi 0000:3b:00.0: 0xA8211AA1 | 
FSEQ_ERROR_CODE
Jul 17 15:13:31 Lappy kernel: [   85.321092] iwlwifi 0000:3b:00.0: 0x00000000 | 
FSEQ_TOP_INIT_VERSION
Jul 17 15:13:31 Lappy kernel: [   85.321145] iwlwifi 0000:3b:00.0: 0xB944C8F9 | 
FSEQ_CNVIO_INIT_VERSION
Jul 17 15:13:31 Lappy kernel: [   85.321198] iwlwifi 0000:3b:00.0: 0x0000A371 | 
FSEQ_OTP_VERSION
Jul 17 15:13:31 Lappy kernel: [   85.321251] iwlwifi 0000:3b:00.0: 0x7C907AAE | 
FSEQ_TOP_CONTENT_VERSION
Jul 17 15:13:31 Lappy kernel: [   85.321304] iwlwifi 0000:3b:00.0: 0xDA4530B8 | 
FSEQ_ALIVE_TOKEN
Jul 17 15:13:31 Lappy kernel: [   85.321356] iwlwifi 0000:3b:00.0: 0x653524CD | 
FSEQ_CNVI_ID
Jul 17 15:13:31 Lappy kernel: [   85.321409] iwlwifi 0000:3b:00.0: 0x0ECAA810 | 
FSEQ_CNVR_ID
Jul 17 15:13:31 Lappy kernel: [   85.321462] iwlwifi 0000:3b:00.0: 0x01000200 | 
CNVI_AUX_MISC_CHIP
Jul 17 15:13:31 Lappy kernel: [   85.321517] iwlwifi 0000:3b:00.0: 0x01300202 | 
CNVR_AUX_MISC_CHIP
Jul 17 15:13:31 Lappy kernel: [   85.321572] iwlwifi 0000:3b:00.0: 0x0000485B | 
CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
Jul 17 15:13:31 Lappy kernel: [   85.321677] iwlwifi 0000:3b:00.0: 0x0BADCAFE | 
CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
Jul 17 15:13:31 Lappy kernel: [   85.321731] iwlwifi 0000:3b:00.0: Collecting 
data: trigger 2 fired.
Jul 17 15:13:31 Lappy kernel: [   85.321735] ieee80211 phy0: Hardware restart 
was requested
Jul 17 15:13:31 Lappy kernel: [   85.321747] iwlwifi 0000:3b:00.0: iwlwifi 
transaction failed, dumping registers
Jul 17 15:13:31 Lappy kernel: [   85.321749] iwlwifi 0000:3b:00.0: iwlwifi 
device config registers:
Jul 17 15:13:31 Lappy kernel: [   85.322632] iwlwifi 0000:3b:00.0: 00000000: 
25268086 00100406 02800029 00000010 ed400004 00000000 00000000 00000000
Jul 17 15:13:31 Lappy kernel: [   85.322636] iwlwifi 0000:3b:00.0: 00000020: 
00000000 00000000 00000000 40108086 00000000 000000c8 00000000 000001ff
Jul 17 15:13:31 Lappy kernel: [   85.322637] iwlwifi 0000:3b:00.0: iwlwifi 
device memory mapped registers:
Jul 17 15:13:31 Lappy kernel: [   85.323220] iwlwifi 0000:3b:00.0: 00000000: 
00489004 00000040 00000000 00000000 00000000 00000000 00027e1f 00000000
Jul 17 15:13:31 Lappy kernel: [   85.323223] iwlwifi 0000:3b:00.0: 00000020: 
00000000 0c040005 00000321 d55555d5 d55555d5 d55555d5 80008040 041f0042
Jul 17 15:13:31 Lappy kernel: [   85.323345] iwlwifi 0000:3b:00.0: iwlwifi 
device AER capability structure:
Jul 17 15:13:31 Lappy kernel: [   85.323904] iwlwifi 0000:3b:00.0: 00000000: 
14c10001 00000000 00000000 00462031 00000000 00002000 00000000 00000000
Jul 17 15:13:31 Lappy kernel: [   85.323906] iwlwifi 0000:3b:00.0: 00000020: 
00000000 00000000 00000000
Jul 17 15:13:31 Lappy kernel: [   85.323908] iwlwifi 0000:3b:00.0: iwlwifi 
parent port (0000:00:1c.0) config registers:
Jul 17 15:13:31 Lappy kernel: [   85.323945] iwlwifi 0000:00:1c.0: 00000000: 
a3388086 00100407 060400f0 00810010 00000000 00000000 003b3b00 200000f0
Jul 17 15:13:31 Lappy kernel: [   85.323947] iwlwifi 0000:00:1c.0: 00000020: 
ed40ed40 0001fff1 00000000 00000000 00000000 00000040 00000000 001201ff
Jul 17 15:13:31 Lappy kernel: [   85.323951] iwlwifi 0000:3b:00.0: iwlwifi root 
port (0000:00:1c.0) AER cap structure:
Jul 17 15:13:31 Lappy kernel: [   85.323969] iwlwifi 0000:00:1c.0: 00000000: 
14010001 00000000 00010000 00060011 00000000 00002000 00000000 00000000
Jul 17 15:13:31 Lappy kernel: [   85.323971] iwlwifi 0000:00:1c.0: 00000020: 
00000000 00000000 00000000 00000000 00000000 00000000
Jul 17 15:13:31 Lappy kernel: [   85.323973] iwlwifi 0000:3b:00.0: FW error in 
SYNC CMD GEO_TX_POWER_LIMIT
Jul 17 15:13:31 Lappy kernel: [   85.323976] CPU: 9 PID: 1350 Comm: 
NetworkManager Tainted: P           OE     5.2.0-8-generic #9-Ubuntu
Jul 17 15:13:31 Lappy kernel: [   85.323976] Hardware name: Dell Inc. Precision 
5530/0NFGCT, BIOS 1.11.2 05/29/2019
Jul 17 15:13:31 Lappy kernel: [   85.323977] Call Trace:
Jul 17 15:13:31 Lappy kernel: [   85.323983]  dump_stack+0x63/0x8a
Jul 17 15:13:31 Lappy kernel: [   85.323994]  
iwl_pcie_send_hcmd_sync+0x497/0x4b0 [iwlwifi]
Jul 17 15:13:31 Lappy kernel: [   85.323997]  ? wait_woken+0x80/0x80
Jul 17 15:13:31 Lappy kernel: [   85.324003]  
iwl_trans_pcie_send_hcmd+0x34/0xf0 [iwlwifi]
Jul 17 15:13:31 Lappy kernel: [   85.324010]  iwl_trans_send_cmd+0x59/0xc0 
[iwlwifi]
Jul 17 15:13:31 Lappy kernel: [   85.324017]  iwl_mvm_send_cmd+0x30/0xa0 
[iwlmvm]
Jul 17 15:13:31 Lappy kernel: [   85.324022]  iwl_mvm_send_cmd_pdu+0x51/0x70 
[iwlmvm]
Jul 17 15:13:31 Lappy kernel: [   85.324027]  iwl_mvm_up+0x99f/0xa30 [iwlmvm]
Jul 17 15:13:31 Lappy kernel: [   85.324033]  __iwl_mvm_mac_start+0x1b2/0x2c0 
[iwlmvm]
Jul 17 15:13:31 Lappy kernel: [   85.324038]  iwl_mvm_mac_start+0x4a/0x120 
[iwlmvm]
Jul 17 15:13:31 Lappy kernel: [   85.324040]  ? skb_dequeue+0x5a/0x70
Jul 17 15:13:31 Lappy kernel: [   85.324054]  drv_start+0x48/0x100 [mac80211]
Jul 17 15:13:31 Lappy kernel: [   85.324067]  ieee80211_do_open+0x21a/0x860 
[mac80211]
Jul 17 15:13:31 Lappy kernel: [   85.324079]  ieee80211_open+0x52/0x60 
[mac80211]
Jul 17 15:13:31 Lappy kernel: [   85.324082]  __dev_open+0xd4/0x170
Jul 17 15:13:31 Lappy kernel: [   85.324084]  __dev_change_flags+0x191/0x1f0
Jul 17 15:13:31 Lappy kernel: [   85.324086]  dev_change_flags+0x26/0x60
Jul 17 15:13:31 Lappy kernel: [   85.324087]  do_setlink+0x82e/0x970
Jul 17 15:13:31 Lappy kernel: [   85.324090]  ? __nla_parse+0x23/0x30
Jul 17 15:13:31 Lappy kernel: [   85.324091]  ? cpumask_next+0x1b/0x20
Jul 17 15:13:31 Lappy kernel: [   85.324094]  ? 
__snmp6_fill_stats64.isra.0+0xe7/0x110
Jul 17 15:13:31 Lappy kernel: [   85.324095]  ? __nla_validate_parse+0x42/0x150
Jul 17 15:13:31 Lappy kernel: [   85.324097]  __rtnl_newlink+0x580/0x970
Jul 17 15:13:31 Lappy kernel: [   85.324099]  ? __nla_put+0x20/0x30
Jul 17 15:13:31 Lappy kernel: [   85.324102]  ? 
__kmalloc_node_track_caller+0x1e1/0x2b0
Jul 17 15:13:31 Lappy kernel: [   85.324103]  ? pskb_expand_head+0x75/0x2d0
Jul 17 15:13:31 Lappy kernel: [   85.324104]  ? 
__kmalloc_reserve.isra.0+0x31/0x90
Jul 17 15:13:31 Lappy kernel: [   85.324106]  ? security_sock_rcv_skb+0x39/0x50
Jul 17 15:13:31 Lappy kernel: [   85.324108]  ? sk_filter_trim_cap+0x48/0x220
Jul 17 15:13:31 Lappy kernel: [   85.324110]  ? skb_queue_tail+0x43/0x50
Jul 17 15:13:31 Lappy kernel: [   85.324111]  ? __netlink_sendskb+0x42/0x50
Jul 17 15:13:31 Lappy kernel: [   85.324114]  ? security_capable+0x47/0x70
Jul 17 15:13:31 Lappy kernel: [   85.324116]  ? _cond_resched+0x19/0x30
Jul 17 15:13:31 Lappy kernel: [   85.324117]  ? 
kmem_cache_alloc_trace+0x155/0x1d0
Jul 17 15:13:31 Lappy kernel: [   85.324118]  rtnl_newlink+0x49/0x70
Jul 17 15:13:31 Lappy kernel: [   85.324119]  rtnetlink_rcv_msg+0x2c0/0x380
Jul 17 15:13:31 Lappy kernel: [   85.324122]  ? sprintf+0x56/0x70
Jul 17 15:13:31 Lappy kernel: [   85.324123]  ? rtnl_calcit.isra.0+0x100/0x100
Jul 17 15:13:31 Lappy kernel: [   85.324124]  netlink_rcv_skb+0x50/0x120
Jul 17 15:13:31 Lappy kernel: [   85.324126]  rtnetlink_rcv+0x15/0x20
Jul 17 15:13:31 Lappy kernel: [   85.324128]  netlink_unicast+0x187/0x220
Jul 17 15:13:31 Lappy kernel: [   85.324129]  netlink_sendmsg+0x204/0x3c0
Jul 17 15:13:31 Lappy kernel: [   85.324131]  sock_sendmsg+0x56/0x60
Jul 17 15:13:31 Lappy kernel: [   85.324132]  ___sys_sendmsg+0x2ae/0x320
Jul 17 15:13:31 Lappy kernel: [   85.324134]  ? netdev_run_todo+0x61/0x2a0
Jul 17 15:13:31 Lappy kernel: [   85.324136]  ? rtnl_unlock+0xe/0x10
Jul 17 15:13:31 Lappy kernel: [   85.324138]  ? 
addrconf_sysctl_forward+0x111/0x280
Jul 17 15:13:31 Lappy kernel: [   85.324141]  ? __fget_light+0x57/0x70
Jul 17 15:13:31 Lappy kernel: [   85.324142]  __sys_sendmsg+0x5c/0xa0
Jul 17 15:13:31 Lappy kernel: [   85.324144]  __x64_sys_sendmsg+0x1f/0x30
Jul 17 15:13:31 Lappy kernel: [   85.324146]  do_syscall_64+0x5a/0x140
Jul 17 15:13:31 Lappy kernel: [   85.324148]  
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Jul 17 15:13:31 Lappy kernel: [   85.324150] RIP: 0033:0x7f65843e75b7
Jul 17 15:13:31 Lappy kernel: [   85.324152] Code: c3 66 90 41 54 41 89 d4 55 
48 89 f5 53 89 fb 48 83 ec 10 e8 eb ec ff ff 44 89 e2 48 89 ee 89 df 41 89 c0 
b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 48 89 44 24 08 e8 24 ed 
ff ff 48
Jul 17 15:13:31 Lappy kernel: [   85.324153] RSP: 002b:00007ffdc089ca10 EFLAGS: 
00000293 ORIG_RAX: 000000000000002e
Jul 17 15:13:31 Lappy kernel: [   85.324154] RAX: ffffffffffffffda RBX: 
000000000000000a RCX: 00007f65843e75b7
Jul 17 15:13:31 Lappy kernel: [   85.324155] RDX: 0000000000000000 RSI: 
00007ffdc089ca60 RDI: 000000000000000a
Jul 17 15:13:31 Lappy kernel: [   85.324155] RBP: 00007ffdc089ca60 R08: 
0000000000000000 R09: 0000000000000000
Jul 17 15:13:31 Lappy kernel: [   85.324156] R10: 00007f65843ccca0 R11: 
0000000000000293 R12: 0000000000000000
Jul 17 15:13:31 Lappy kernel: [   85.324156] R13: 0000000000000000 R14: 
00007ffdc089cc18 R15: 00007ffdc089cc0c
Jul 17 15:13:31 Lappy kernel: [   85.324183] iwlwifi 0000:3b:00.0: Firmware not 
running - cannot dump error
Jul 17 15:13:31 Lappy NetworkManager[1350]: <warn>  [1563401611.0974] 
platform-linux: do-change-link[2]: failure changing link: failure 5 
(Input/output error)
Jul 17 15:13:31 Lappy NetworkManager[1350]: <warn>  [1563401611.0995] Error: 
failed to open /run/network/ifstate


The above error repeats over and over as the driver keeps trying to
reload.

** Affects: linux-signed (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: 5.2.0-8-generic iwlwifi linux-firmware

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https://bugs.launchpad.net/bugs/1836986

Title:
  Kernel 5.2.0-8: iwlwifi Microcode SW error detected Wireless-AC 9260

Status in linux-signed package in Ubuntu:
  New

Bug description:
  Ubuntu version:
  Description:  Ubuntu Eoan Ermine (development branch)
  Release:      19.10


  System type:
      description: Notebook
      product: Precision 5530 (087D)
      vendor: Dell Inc.

  
  Hardware having issue:
  (wireless card info from previous working kernel)
             *-network
                  description: Wireless interface
                  product: Wireless-AC 9260
                  vendor: Intel Corporation
                  physical id: 0
                  bus info: pci@0000:3b:00.0
                  logical name: wlp59s0
                  version: 29
                  serial: 48:89:e7:d5:ab:b5
                  width: 64 bits
                  clock: 33MHz
                  capabilities: pm msi pciexpress msix bus_master cap_list 
ethernet physical wireless
                  configuration: broadcast=yes driver=iwlwifi 
driverversion=5.0.0-20-generic firmware=43.95eb4e97.0 ip=10.80.13.232 latency=0 
link=yes multicast=yes wireless=IEEE 802.11
                  resources: irq:16 memory:ed400000-ed403fff

  
  Grub config with settings for Dell laptop hardware set:
  /etc/default/grub
  # If you change this file, run 'update-grub' afterwards to update
  # /boot/grub/grub.cfg.
  # For full documentation of the options in this file, see:
  #   info -f grub -n 'Simple configuration'

  GRUB_DEFAULT=0
  GRUB_TIMEOUT=0
  GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
  #GRUB_CMDLINE_LINUX_DEFAULT="nosplash"
  GRUB_CMDLINE_LINUX="nouveau.blacklist=1 acpi_rev_override=1 acpi_osi=Linux 
nouveau.modeset=0 pcie_aspm=force drm.vblankoffdelay=1 scsi_mod.use_blk_mq=1 
nouveau.runpm=0 mem_sleep_default=deep"

  # Uncomment to enable BadRAM filtering, modify to suit your needs
  # This works with Linux (no patch required) and with any kernel that obtains
  # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
  #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

  # Uncomment to disable graphical terminal (grub-pc only)
  #GRUB_TERMINAL=console

  # The resolution used on graphical terminal
  # note that you can use only modes which your graphic card supports via VBE
  # you can see them in real GRUB with the command `vbeinfo'
  #GRUB_GFXMODE=640x480

  # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
  #GRUB_DISABLE_LINUX_UUID=true

  # Uncomment to disable generation of recovery mode menu entries
  #GRUB_DISABLE_RECOVERY="true"

  # Uncomment to get a beep at grub start
  #GRUB_INIT_TUNE="480 440 1"


  Iwlwifi config with 11n disabled, 11n wasn't ever stable before, so left it 
disabled.
  /etc/modprobe.d/iwlwifi.conf 
  # /etc/modprobe.d/iwlwifi.conf
  # iwlwifi will dyamically load either iwldvm or iwlmvm depending on the
  # microcode file installed on the system.  When removing iwlwifi, first
  # remove the iwl?vm module and then iwlwifi.
  remove iwlwifi \
  (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) 
\
  && /sbin/modprobe -r mac80211
  options iwlwifi 11n_disable=1


  Linux-Firmware package = 1.180
  Nvidia Driver version = 430.34-0ubuntu2

  Issue:
  Problem with kernel 5.2.0-8-generic - Wifi firmware fails to load.  Works 
with 5.0.0.-20-generic kernel.

  Syslog:
  Jul 17 15:13:31 Lappy kernel: [   85.319088] iwlwifi 0000:3b:00.0: Microcode 
SW error detected. Restarting 0x0.
  Jul 17 15:13:31 Lappy kernel: [   85.320158] iwlwifi 0000:3b:00.0: Start IWL 
Error Log Dump:
  Jul 17 15:13:31 Lappy kernel: [   85.320161] iwlwifi 0000:3b:00.0: Status: 
0x00000080, count: 6
  Jul 17 15:13:31 Lappy kernel: [   85.320162] iwlwifi 0000:3b:00.0: Loaded 
firmware version: 46.a41adfe7.0
  Jul 17 15:13:31 Lappy kernel: [   85.320164] iwlwifi 0000:3b:00.0: 0x00000071 
| NMI_INTERRUPT_UMAC_FATAL    
  Jul 17 15:13:31 Lappy kernel: [   85.320166] iwlwifi 0000:3b:00.0: 0x00A022F0 
| trm_hw_status0
  Jul 17 15:13:31 Lappy kernel: [   85.320167] iwlwifi 0000:3b:00.0: 0x00000000 
| trm_hw_status1
  Jul 17 15:13:31 Lappy kernel: [   85.320168] iwlwifi 0000:3b:00.0: 0x004882F2 
| branchlink2
  Jul 17 15:13:31 Lappy kernel: [   85.320169] iwlwifi 0000:3b:00.0: 0x004793A2 
| interruptlink1
  Jul 17 15:13:31 Lappy kernel: [   85.320171] iwlwifi 0000:3b:00.0: 0x00480EA2 
| interruptlink2
  Jul 17 15:13:31 Lappy kernel: [   85.320172] iwlwifi 0000:3b:00.0: 0x0001A7D2 
| data1
  Jul 17 15:13:31 Lappy kernel: [   85.320173] iwlwifi 0000:3b:00.0: 0x00001000 
| data2
  Jul 17 15:13:31 Lappy kernel: [   85.320174] iwlwifi 0000:3b:00.0: 0xE0000008 
| data3
  Jul 17 15:13:31 Lappy kernel: [   85.320176] iwlwifi 0000:3b:00.0: 0x00000000 
| beacon time
  Jul 17 15:13:31 Lappy kernel: [   85.320177] iwlwifi 0000:3b:00.0: 0x0003ED44 
| tsf low
  Jul 17 15:13:31 Lappy kernel: [   85.320178] iwlwifi 0000:3b:00.0: 0x00000000 
| tsf hi
  Jul 17 15:13:31 Lappy kernel: [   85.320180] iwlwifi 0000:3b:00.0: 0x00000000 
| time gp1
  Jul 17 15:13:31 Lappy kernel: [   85.320181] iwlwifi 0000:3b:00.0: 0x0003ED44 
| time gp2
  Jul 17 15:13:31 Lappy kernel: [   85.320182] iwlwifi 0000:3b:00.0: 0x00000001 
| uCode revision type
  Jul 17 15:13:31 Lappy kernel: [   85.320183] iwlwifi 0000:3b:00.0: 0x0000002E 
| uCode version major
  Jul 17 15:13:31 Lappy kernel: [   85.320185] iwlwifi 0000:3b:00.0: 0xA41ADFE7 
| uCode version minor
  Jul 17 15:13:31 Lappy kernel: [   85.320186] iwlwifi 0000:3b:00.0: 0x00000321 
| hw version
  Jul 17 15:13:31 Lappy kernel: [   85.320187] iwlwifi 0000:3b:00.0: 0x00489004 
| board version
  Jul 17 15:13:31 Lappy kernel: [   85.320188] iwlwifi 0000:3b:00.0: 0x00240405 
| hcmd
  Jul 17 15:13:31 Lappy kernel: [   85.320190] iwlwifi 0000:3b:00.0: 0x00022000 
| isr0
  Jul 17 15:13:31 Lappy kernel: [   85.320191] iwlwifi 0000:3b:00.0: 0x00000000 
| isr1
  Jul 17 15:13:31 Lappy kernel: [   85.320192] iwlwifi 0000:3b:00.0: 0x20001802 
| isr2
  Jul 17 15:13:31 Lappy kernel: [   85.320193] iwlwifi 0000:3b:00.0: 0x404000C0 
| isr3
  Jul 17 15:13:31 Lappy kernel: [   85.320195] iwlwifi 0000:3b:00.0: 0x00000000 
| isr4
  Jul 17 15:13:31 Lappy kernel: [   85.320196] iwlwifi 0000:3b:00.0: 0x00240405 
| last cmd Id
  Jul 17 15:13:31 Lappy kernel: [   85.320197] iwlwifi 0000:3b:00.0: 0x0001A7D2 
| wait_event
  Jul 17 15:13:31 Lappy kernel: [   85.320198] iwlwifi 0000:3b:00.0: 0x00000000 
| l2p_control
  Jul 17 15:13:31 Lappy kernel: [   85.320199] iwlwifi 0000:3b:00.0: 0x00000020 
| l2p_duration
  Jul 17 15:13:31 Lappy kernel: [   85.320200] iwlwifi 0000:3b:00.0: 0x00000000 
| l2p_mhvalid
  Jul 17 15:13:31 Lappy kernel: [   85.320202] iwlwifi 0000:3b:00.0: 0x00000000 
| l2p_addr_match
  Jul 17 15:13:31 Lappy kernel: [   85.320203] iwlwifi 0000:3b:00.0: 0x0000000D 
| lmpm_pmg_sel
  Jul 17 15:13:31 Lappy kernel: [   85.320204] iwlwifi 0000:3b:00.0: 0x19062027 
| timestamp
  Jul 17 15:13:31 Lappy kernel: [   85.320206] iwlwifi 0000:3b:00.0: 0x00001840 
| flow_handler
  Jul 17 15:13:31 Lappy kernel: [   85.320768] iwlwifi 0000:3b:00.0: Start IWL 
Error Log Dump:
  Jul 17 15:13:31 Lappy kernel: [   85.320772] iwlwifi 0000:3b:00.0: Status: 
0x00000080, count: 7
  Jul 17 15:13:31 Lappy kernel: [   85.320776] iwlwifi 0000:3b:00.0: 0x20000034 
| NMI_INTERRUPT_WDG
  Jul 17 15:13:31 Lappy kernel: [   85.320779] iwlwifi 0000:3b:00.0: 0x00000000 
| umac branchlink1
  Jul 17 15:13:31 Lappy kernel: [   85.320783] iwlwifi 0000:3b:00.0: 0xC008887A 
| umac branchlink2
  Jul 17 15:13:31 Lappy kernel: [   85.320786] iwlwifi 0000:3b:00.0: 0xC0084C80 
| umac interruptlink1
  Jul 17 15:13:31 Lappy kernel: [   85.320789] iwlwifi 0000:3b:00.0: 0xC0080708 
| umac interruptlink2
  Jul 17 15:13:31 Lappy kernel: [   85.320793] iwlwifi 0000:3b:00.0: 0x00000400 
| umac data1
  Jul 17 15:13:31 Lappy kernel: [   85.320796] iwlwifi 0000:3b:00.0: 0xC0080708 
| umac data2
  Jul 17 15:13:31 Lappy kernel: [   85.320800] iwlwifi 0000:3b:00.0: 0xDEADBEEF 
| umac data3
  Jul 17 15:13:31 Lappy kernel: [   85.320804] iwlwifi 0000:3b:00.0: 0x0000002E 
| umac major
  Jul 17 15:13:31 Lappy kernel: [   85.320805] iwlwifi 0000:3b:00.0: 0xA41ADFE7 
| umac minor
  Jul 17 15:13:31 Lappy kernel: [   85.320807] iwlwifi 0000:3b:00.0: 0x0003ED2B 
| frame pointer
  Jul 17 15:13:31 Lappy kernel: [   85.320810] iwlwifi 0000:3b:00.0: 0xC0886C44 
| stack pointer
  Jul 17 15:13:31 Lappy kernel: [   85.320813] iwlwifi 0000:3b:00.0: 0x00240405 
| last host cmd
  Jul 17 15:13:31 Lappy kernel: [   85.320814] iwlwifi 0000:3b:00.0: 0x00004008 
| isr status reg
  Jul 17 15:13:31 Lappy kernel: [   85.320988] iwlwifi 0000:3b:00.0: Fseq 
Registers:
  Jul 17 15:13:31 Lappy kernel: [   85.321039] iwlwifi 0000:3b:00.0: 0xA8211AA1 
| FSEQ_ERROR_CODE
  Jul 17 15:13:31 Lappy kernel: [   85.321092] iwlwifi 0000:3b:00.0: 0x00000000 
| FSEQ_TOP_INIT_VERSION
  Jul 17 15:13:31 Lappy kernel: [   85.321145] iwlwifi 0000:3b:00.0: 0xB944C8F9 
| FSEQ_CNVIO_INIT_VERSION
  Jul 17 15:13:31 Lappy kernel: [   85.321198] iwlwifi 0000:3b:00.0: 0x0000A371 
| FSEQ_OTP_VERSION
  Jul 17 15:13:31 Lappy kernel: [   85.321251] iwlwifi 0000:3b:00.0: 0x7C907AAE 
| FSEQ_TOP_CONTENT_VERSION
  Jul 17 15:13:31 Lappy kernel: [   85.321304] iwlwifi 0000:3b:00.0: 0xDA4530B8 
| FSEQ_ALIVE_TOKEN
  Jul 17 15:13:31 Lappy kernel: [   85.321356] iwlwifi 0000:3b:00.0: 0x653524CD 
| FSEQ_CNVI_ID
  Jul 17 15:13:31 Lappy kernel: [   85.321409] iwlwifi 0000:3b:00.0: 0x0ECAA810 
| FSEQ_CNVR_ID
  Jul 17 15:13:31 Lappy kernel: [   85.321462] iwlwifi 0000:3b:00.0: 0x01000200 
| CNVI_AUX_MISC_CHIP
  Jul 17 15:13:31 Lappy kernel: [   85.321517] iwlwifi 0000:3b:00.0: 0x01300202 
| CNVR_AUX_MISC_CHIP
  Jul 17 15:13:31 Lappy kernel: [   85.321572] iwlwifi 0000:3b:00.0: 0x0000485B 
| CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
  Jul 17 15:13:31 Lappy kernel: [   85.321677] iwlwifi 0000:3b:00.0: 0x0BADCAFE 
| CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
  Jul 17 15:13:31 Lappy kernel: [   85.321731] iwlwifi 0000:3b:00.0: Collecting 
data: trigger 2 fired.
  Jul 17 15:13:31 Lappy kernel: [   85.321735] ieee80211 phy0: Hardware restart 
was requested
  Jul 17 15:13:31 Lappy kernel: [   85.321747] iwlwifi 0000:3b:00.0: iwlwifi 
transaction failed, dumping registers
  Jul 17 15:13:31 Lappy kernel: [   85.321749] iwlwifi 0000:3b:00.0: iwlwifi 
device config registers:
  Jul 17 15:13:31 Lappy kernel: [   85.322632] iwlwifi 0000:3b:00.0: 00000000: 
25268086 00100406 02800029 00000010 ed400004 00000000 00000000 00000000
  Jul 17 15:13:31 Lappy kernel: [   85.322636] iwlwifi 0000:3b:00.0: 00000020: 
00000000 00000000 00000000 40108086 00000000 000000c8 00000000 000001ff
  Jul 17 15:13:31 Lappy kernel: [   85.322637] iwlwifi 0000:3b:00.0: iwlwifi 
device memory mapped registers:
  Jul 17 15:13:31 Lappy kernel: [   85.323220] iwlwifi 0000:3b:00.0: 00000000: 
00489004 00000040 00000000 00000000 00000000 00000000 00027e1f 00000000
  Jul 17 15:13:31 Lappy kernel: [   85.323223] iwlwifi 0000:3b:00.0: 00000020: 
00000000 0c040005 00000321 d55555d5 d55555d5 d55555d5 80008040 041f0042
  Jul 17 15:13:31 Lappy kernel: [   85.323345] iwlwifi 0000:3b:00.0: iwlwifi 
device AER capability structure:
  Jul 17 15:13:31 Lappy kernel: [   85.323904] iwlwifi 0000:3b:00.0: 00000000: 
14c10001 00000000 00000000 00462031 00000000 00002000 00000000 00000000
  Jul 17 15:13:31 Lappy kernel: [   85.323906] iwlwifi 0000:3b:00.0: 00000020: 
00000000 00000000 00000000
  Jul 17 15:13:31 Lappy kernel: [   85.323908] iwlwifi 0000:3b:00.0: iwlwifi 
parent port (0000:00:1c.0) config registers:
  Jul 17 15:13:31 Lappy kernel: [   85.323945] iwlwifi 0000:00:1c.0: 00000000: 
a3388086 00100407 060400f0 00810010 00000000 00000000 003b3b00 200000f0
  Jul 17 15:13:31 Lappy kernel: [   85.323947] iwlwifi 0000:00:1c.0: 00000020: 
ed40ed40 0001fff1 00000000 00000000 00000000 00000040 00000000 001201ff
  Jul 17 15:13:31 Lappy kernel: [   85.323951] iwlwifi 0000:3b:00.0: iwlwifi 
root port (0000:00:1c.0) AER cap structure:
  Jul 17 15:13:31 Lappy kernel: [   85.323969] iwlwifi 0000:00:1c.0: 00000000: 
14010001 00000000 00010000 00060011 00000000 00002000 00000000 00000000
  Jul 17 15:13:31 Lappy kernel: [   85.323971] iwlwifi 0000:00:1c.0: 00000020: 
00000000 00000000 00000000 00000000 00000000 00000000
  Jul 17 15:13:31 Lappy kernel: [   85.323973] iwlwifi 0000:3b:00.0: FW error 
in SYNC CMD GEO_TX_POWER_LIMIT
  Jul 17 15:13:31 Lappy kernel: [   85.323976] CPU: 9 PID: 1350 Comm: 
NetworkManager Tainted: P           OE     5.2.0-8-generic #9-Ubuntu
  Jul 17 15:13:31 Lappy kernel: [   85.323976] Hardware name: Dell Inc. 
Precision 5530/0NFGCT, BIOS 1.11.2 05/29/2019
  Jul 17 15:13:31 Lappy kernel: [   85.323977] Call Trace:
  Jul 17 15:13:31 Lappy kernel: [   85.323983]  dump_stack+0x63/0x8a
  Jul 17 15:13:31 Lappy kernel: [   85.323994]  
iwl_pcie_send_hcmd_sync+0x497/0x4b0 [iwlwifi]
  Jul 17 15:13:31 Lappy kernel: [   85.323997]  ? wait_woken+0x80/0x80
  Jul 17 15:13:31 Lappy kernel: [   85.324003]  
iwl_trans_pcie_send_hcmd+0x34/0xf0 [iwlwifi]
  Jul 17 15:13:31 Lappy kernel: [   85.324010]  iwl_trans_send_cmd+0x59/0xc0 
[iwlwifi]
  Jul 17 15:13:31 Lappy kernel: [   85.324017]  iwl_mvm_send_cmd+0x30/0xa0 
[iwlmvm]
  Jul 17 15:13:31 Lappy kernel: [   85.324022]  iwl_mvm_send_cmd_pdu+0x51/0x70 
[iwlmvm]
  Jul 17 15:13:31 Lappy kernel: [   85.324027]  iwl_mvm_up+0x99f/0xa30 [iwlmvm]
  Jul 17 15:13:31 Lappy kernel: [   85.324033]  __iwl_mvm_mac_start+0x1b2/0x2c0 
[iwlmvm]
  Jul 17 15:13:31 Lappy kernel: [   85.324038]  iwl_mvm_mac_start+0x4a/0x120 
[iwlmvm]
  Jul 17 15:13:31 Lappy kernel: [   85.324040]  ? skb_dequeue+0x5a/0x70
  Jul 17 15:13:31 Lappy kernel: [   85.324054]  drv_start+0x48/0x100 [mac80211]
  Jul 17 15:13:31 Lappy kernel: [   85.324067]  ieee80211_do_open+0x21a/0x860 
[mac80211]
  Jul 17 15:13:31 Lappy kernel: [   85.324079]  ieee80211_open+0x52/0x60 
[mac80211]
  Jul 17 15:13:31 Lappy kernel: [   85.324082]  __dev_open+0xd4/0x170
  Jul 17 15:13:31 Lappy kernel: [   85.324084]  __dev_change_flags+0x191/0x1f0
  Jul 17 15:13:31 Lappy kernel: [   85.324086]  dev_change_flags+0x26/0x60
  Jul 17 15:13:31 Lappy kernel: [   85.324087]  do_setlink+0x82e/0x970
  Jul 17 15:13:31 Lappy kernel: [   85.324090]  ? __nla_parse+0x23/0x30
  Jul 17 15:13:31 Lappy kernel: [   85.324091]  ? cpumask_next+0x1b/0x20
  Jul 17 15:13:31 Lappy kernel: [   85.324094]  ? 
__snmp6_fill_stats64.isra.0+0xe7/0x110
  Jul 17 15:13:31 Lappy kernel: [   85.324095]  ? 
__nla_validate_parse+0x42/0x150
  Jul 17 15:13:31 Lappy kernel: [   85.324097]  __rtnl_newlink+0x580/0x970
  Jul 17 15:13:31 Lappy kernel: [   85.324099]  ? __nla_put+0x20/0x30
  Jul 17 15:13:31 Lappy kernel: [   85.324102]  ? 
__kmalloc_node_track_caller+0x1e1/0x2b0
  Jul 17 15:13:31 Lappy kernel: [   85.324103]  ? pskb_expand_head+0x75/0x2d0
  Jul 17 15:13:31 Lappy kernel: [   85.324104]  ? 
__kmalloc_reserve.isra.0+0x31/0x90
  Jul 17 15:13:31 Lappy kernel: [   85.324106]  ? 
security_sock_rcv_skb+0x39/0x50
  Jul 17 15:13:31 Lappy kernel: [   85.324108]  ? sk_filter_trim_cap+0x48/0x220
  Jul 17 15:13:31 Lappy kernel: [   85.324110]  ? skb_queue_tail+0x43/0x50
  Jul 17 15:13:31 Lappy kernel: [   85.324111]  ? __netlink_sendskb+0x42/0x50
  Jul 17 15:13:31 Lappy kernel: [   85.324114]  ? security_capable+0x47/0x70
  Jul 17 15:13:31 Lappy kernel: [   85.324116]  ? _cond_resched+0x19/0x30
  Jul 17 15:13:31 Lappy kernel: [   85.324117]  ? 
kmem_cache_alloc_trace+0x155/0x1d0
  Jul 17 15:13:31 Lappy kernel: [   85.324118]  rtnl_newlink+0x49/0x70
  Jul 17 15:13:31 Lappy kernel: [   85.324119]  rtnetlink_rcv_msg+0x2c0/0x380
  Jul 17 15:13:31 Lappy kernel: [   85.324122]  ? sprintf+0x56/0x70
  Jul 17 15:13:31 Lappy kernel: [   85.324123]  ? rtnl_calcit.isra.0+0x100/0x100
  Jul 17 15:13:31 Lappy kernel: [   85.324124]  netlink_rcv_skb+0x50/0x120
  Jul 17 15:13:31 Lappy kernel: [   85.324126]  rtnetlink_rcv+0x15/0x20
  Jul 17 15:13:31 Lappy kernel: [   85.324128]  netlink_unicast+0x187/0x220
  Jul 17 15:13:31 Lappy kernel: [   85.324129]  netlink_sendmsg+0x204/0x3c0
  Jul 17 15:13:31 Lappy kernel: [   85.324131]  sock_sendmsg+0x56/0x60
  Jul 17 15:13:31 Lappy kernel: [   85.324132]  ___sys_sendmsg+0x2ae/0x320
  Jul 17 15:13:31 Lappy kernel: [   85.324134]  ? netdev_run_todo+0x61/0x2a0
  Jul 17 15:13:31 Lappy kernel: [   85.324136]  ? rtnl_unlock+0xe/0x10
  Jul 17 15:13:31 Lappy kernel: [   85.324138]  ? 
addrconf_sysctl_forward+0x111/0x280
  Jul 17 15:13:31 Lappy kernel: [   85.324141]  ? __fget_light+0x57/0x70
  Jul 17 15:13:31 Lappy kernel: [   85.324142]  __sys_sendmsg+0x5c/0xa0
  Jul 17 15:13:31 Lappy kernel: [   85.324144]  __x64_sys_sendmsg+0x1f/0x30
  Jul 17 15:13:31 Lappy kernel: [   85.324146]  do_syscall_64+0x5a/0x140
  Jul 17 15:13:31 Lappy kernel: [   85.324148]  
entry_SYSCALL_64_after_hwframe+0x44/0xa9
  Jul 17 15:13:31 Lappy kernel: [   85.324150] RIP: 0033:0x7f65843e75b7
  Jul 17 15:13:31 Lappy kernel: [   85.324152] Code: c3 66 90 41 54 41 89 d4 55 
48 89 f5 53 89 fb 48 83 ec 10 e8 eb ec ff ff 44 89 e2 48 89 ee 89 df 41 89 c0 
b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 48 89 44 24 08 e8 24 ed 
ff ff 48
  Jul 17 15:13:31 Lappy kernel: [   85.324153] RSP: 002b:00007ffdc089ca10 
EFLAGS: 00000293 ORIG_RAX: 000000000000002e
  Jul 17 15:13:31 Lappy kernel: [   85.324154] RAX: ffffffffffffffda RBX: 
000000000000000a RCX: 00007f65843e75b7
  Jul 17 15:13:31 Lappy kernel: [   85.324155] RDX: 0000000000000000 RSI: 
00007ffdc089ca60 RDI: 000000000000000a
  Jul 17 15:13:31 Lappy kernel: [   85.324155] RBP: 00007ffdc089ca60 R08: 
0000000000000000 R09: 0000000000000000
  Jul 17 15:13:31 Lappy kernel: [   85.324156] R10: 00007f65843ccca0 R11: 
0000000000000293 R12: 0000000000000000
  Jul 17 15:13:31 Lappy kernel: [   85.324156] R13: 0000000000000000 R14: 
00007ffdc089cc18 R15: 00007ffdc089cc0c
  Jul 17 15:13:31 Lappy kernel: [   85.324183] iwlwifi 0000:3b:00.0: Firmware 
not running - cannot dump error
  Jul 17 15:13:31 Lappy NetworkManager[1350]: <warn>  [1563401611.0974] 
platform-linux: do-change-link[2]: failure changing link: failure 5 
(Input/output error)
  Jul 17 15:13:31 Lappy NetworkManager[1350]: <warn>  [1563401611.0995] Error: 
failed to open /run/network/ifstate


  The above error repeats over and over as the driver keeps trying to
  reload.

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