Comment 29 for bug 1838208

On 5.2.0-15-generic my WiFi stopped working and I see this in dmesg.

[52478.783342] iwlwifi 0000:01:00.0: Microcode SW error detected. Restarting 0x2000000.
[52478.783507] iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
[52478.783510] iwlwifi 0000:01:00.0: Status: 0x00000080, count: 6
[52478.783511] iwlwifi 0000:01:00.0: Loaded firmware version: 36.8fd77bb3.0
[52478.783513] iwlwifi 0000:01:00.0: 0x00000EDC | ADVANCED_SYSASSERT
[52478.783514] iwlwifi 0000:01:00.0: 0x00A00220 | trm_hw_status0
[52478.783515] iwlwifi 0000:01:00.0: 0x00000000 | trm_hw_status1
[52478.783516] iwlwifi 0000:01:00.0: 0x0002486C | branchlink2
[52478.783517] iwlwifi 0000:01:00.0: 0x0003A7CE | interruptlink1
[52478.783518] iwlwifi 0000:01:00.0: 0x00000000 | interruptlink2
[52478.783519] iwlwifi 0000:01:00.0: 0x0BE7001C | data1
[52478.783520] iwlwifi 0000:01:00.0: 0x20000606 | data2
[52478.783521] iwlwifi 0000:01:00.0: 0x00000E4C | data3
[52478.783522] iwlwifi 0000:01:00.0: 0x2EC0909D | beacon time
[52478.783523] iwlwifi 0000:01:00.0: 0x55F27F6B | tsf low
[52478.783524] iwlwifi 0000:01:00.0: 0x000003B7 | tsf hi
[52478.783525] iwlwifi 0000:01:00.0: 0x00000000 | time gp1
[52478.783526] iwlwifi 0000:01:00.0: 0xC9EF0F37 | time gp2
[52478.783527] iwlwifi 0000:01:00.0: 0x00000001 | uCode revision type
[52478.783528] iwlwifi 0000:01:00.0: 0x00000024 | uCode version major
[52478.783529] iwlwifi 0000:01:00.0: 0x8FD77BB3 | uCode version minor
[52478.783530] iwlwifi 0000:01:00.0: 0x00000230 | hw version
[52478.783531] iwlwifi 0000:01:00.0: 0x00C89000 | board version
[52478.783532] iwlwifi 0000:01:00.0: 0x20000606 | hcmd
[52478.783533] iwlwifi 0000:01:00.0: 0x24022002 | isr0
[52478.783534] iwlwifi 0000:01:00.0: 0x00000000 | isr1
[52478.783535] iwlwifi 0000:01:00.0: 0x08001802 | isr2
[52478.783536] iwlwifi 0000:01:00.0: 0x00417CC1 | isr3
[52478.783537] iwlwifi 0000:01:00.0: 0x00000000 | isr4
[52478.783538] iwlwifi 0000:01:00.0: 0x0BA8001C | last cmd Id
[52478.783539] iwlwifi 0000:01:00.0: 0x00000000 | wait_event
[52478.783540] iwlwifi 0000:01:00.0: 0x000000C4 | l2p_control
[52478.783541] iwlwifi 0000:01:00.0: 0x00018030 | l2p_duration
[52478.783542] iwlwifi 0000:01:00.0: 0x00000007 | l2p_mhvalid
[52478.783543] iwlwifi 0000:01:00.0: 0x00000081 | l2p_addr_match
[52478.783544] iwlwifi 0000:01:00.0: 0x0000001D | lmpm_pmg_sel
[52478.783545] iwlwifi 0000:01:00.0: 0x29051704 | timestamp
[52478.783546] iwlwifi 0000:01:00.0: 0x00005868 | flow_handler
[52478.783615] iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
[52478.783616] iwlwifi 0000:01:00.0: Status: 0x00000080, count: 7
[52478.783617] iwlwifi 0000:01:00.0: 0x00000070 | NMI_INTERRUPT_LMAC_FATAL
[52478.783618] iwlwifi 0000:01:00.0: 0x00000000 | umac branchlink1
[52478.783619] iwlwifi 0000:01:00.0: 0xC0086934 | umac branchlink2
[52478.783620] iwlwifi 0000:01:00.0: 0xC0083B0C | umac interruptlink1
[52478.783621] iwlwifi 0000:01:00.0: 0xC0083B0C | umac interruptlink2
[52478.783622] iwlwifi 0000:01:00.0: 0x00000800 | umac data1
[52478.783623] iwlwifi 0000:01:00.0: 0xC0083B0C | umac data2
[52478.783624] iwlwifi 0000:01:00.0: 0xDEADBEEF | umac data3
[52478.783624] iwlwifi 0000:01:00.0: 0x00000024 | umac major
[52478.783625] iwlwifi 0000:01:00.0: 0x8FD77BB3 | umac minor
[52478.783626] iwlwifi 0000:01:00.0: 0xC088628C | frame pointer
[52478.783627] iwlwifi 0000:01:00.0: 0xC088628C | stack pointer
[52478.783628] iwlwifi 0000:01:00.0: 0x00F9014E | last host cmd
[52478.783629] iwlwifi 0000:01:00.0: 0x00000000 | isr status reg
[52478.783657] iwlwifi 0000:01:00.0: Fseq Registers:
[52478.783667] iwlwifi 0000:01:00.0: 0x38376E8E | FSEQ_ERROR_CODE
[52478.783678] iwlwifi 0000:01:00.0: 0x015B6011 | FSEQ_TOP_INIT_VERSION
[52478.783688] iwlwifi 0000:01:00.0: 0x3727C216 | FSEQ_CNVIO_INIT_VERSION
[52478.783699] iwlwifi 0000:01:00.0: 0x0000A10B | FSEQ_OTP_VERSION
[52478.783710] iwlwifi 0000:01:00.0: 0xEDE3F1DF | FSEQ_TOP_CONTENT_VERSION
[52478.783720] iwlwifi 0000:01:00.0: 0xDF1522B6 | FSEQ_ALIVE_TOKEN
[52478.783731] iwlwifi 0000:01:00.0: 0x6FAD1A96 | FSEQ_CNVI_ID
[52478.783741] iwlwifi 0000:01:00.0: 0xA16E30DC | FSEQ_CNVR_ID
[52478.783752] iwlwifi 0000:01:00.0: 0x00000010 | CNVI_AUX_MISC_CHIP
[52478.783760] iwlwifi 0000:01:00.0: 0x0BADCAFE | CNVR_AUX_MISC_CHIP
[52478.783770] iwlwifi 0000:01:00.0: 0x0BADCAFE | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[52478.783781] iwlwifi 0000:01:00.0: 0x0BADCAFE | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[52478.783794] iwlwifi 0000:01:00.0: Collecting data: trigger 2 fired.
[52478.783802] ieee80211 phy0: Hardware restart was requested
[52479.289828] iwlwifi 0000:01:00.0: Failing on timeout while stopping DMA channel 8 [0x07fd0001]