Created attachment 285151 [details]
The full dmesg

I have a laptop equipped with i5-7200U and Intel Wireless-AC 3168NGW.  The WiFi becomes failed after I upgrade my system to kernel 5.3.1.  It also hangs up the system if I turned on WiFi.

I seems related to microcode.

[    8.586598] iwlwifi 0000:3b:00.0: Microcode SW error detected.  Restarting 0x82000000.
[    8.586729] iwlwifi 0000:3b:00.0: Start IWL Error Log Dump:
[    8.586734] iwlwifi 0000:3b:00.0: Status: 0x00000080, count: 6
[    8.586737] iwlwifi 0000:3b:00.0: Loaded firmware version: 29.1654887522.0
[    8.586741] iwlwifi 0000:3b:00.0: 0x00000038 | BAD_COMMAND                 
[    8.586743] iwlwifi 0000:3b:00.0: 0x000002A0 | trm_hw_status0
[    8.586746] iwlwifi 0000:3b:00.0: 0x00000000 | trm_hw_status1
[    8.586749] iwlwifi 0000:3b:00.0: 0x00043D6C | branchlink2
[    8.586751] iwlwifi 0000:3b:00.0: 0x0004AFA2 | interruptlink1
[    8.586754] iwlwifi 0000:3b:00.0: 0x00000000 | interruptlink2
[    8.586756] iwlwifi 0000:3b:00.0: 0x002C0405 | data1
[    8.586759] iwlwifi 0000:3b:00.0: 0x0000002D | data2
[    8.586761] iwlwifi 0000:3b:00.0: 0x0000002D | data3
[    8.586764] iwlwifi 0000:3b:00.0: 0x000A4E1E | beacon time
[    8.586767] iwlwifi 0000:3b:00.0: 0x00370C12 | tsf low
[    8.586769] iwlwifi 0000:3b:00.0: 0x00000000 | tsf hi
[    8.586771] iwlwifi 0000:3b:00.0: 0x00000000 | time gp1
[    8.586774] iwlwifi 0000:3b:00.0: 0x00370C12 | time gp2
[    8.586777] iwlwifi 0000:3b:00.0: 0x00000001 | uCode revision type
[    8.586779] iwlwifi 0000:3b:00.0: 0x0000001D | uCode version major
[    8.586782] iwlwifi 0000:3b:00.0: 0x62A39462 | uCode version minor
[    8.586784] iwlwifi 0000:3b:00.0: 0x00000220 | hw version
[    8.586787] iwlwifi 0000:3b:00.0: 0x00C89200 | board version
[    8.586789] iwlwifi 0000:3b:00.0: 0x002C0405 | hcmd
[    8.586792] iwlwifi 0000:3b:00.0: 0x00022080 | isr0
[    8.586794] iwlwifi 0000:3b:00.0: 0x00000000 | isr1
[    8.586797] iwlwifi 0000:3b:00.0: 0x00000002 | isr2
[    8.586799] iwlwifi 0000:3b:00.0: 0x00417C80 | isr3
[    8.586801] iwlwifi 0000:3b:00.0: 0x00000000 | isr4
[    8.586804] iwlwifi 0000:3b:00.0: 0x002B01C8 | last cmd Id
[    8.586807] iwlwifi 0000:3b:00.0: 0x00000000 | wait_event
[    8.586809] iwlwifi 0000:3b:00.0: 0x00000050 | l2p_control
[    8.586812] iwlwifi 0000:3b:00.0: 0x00018020 | l2p_duration
[    8.586814] iwlwifi 0000:3b:00.0: 0x0000003F | l2p_mhvalid
[    8.586816] iwlwifi 0000:3b:00.0: 0x00000000 | l2p_addr_match
[    8.586819] iwlwifi 0000:3b:00.0: 0x00000007 | lmpm_pmg_sel
[    8.586822] iwlwifi 0000:3b:00.0: 0x16070617 | timestamp
[    8.586824] iwlwifi 0000:3b:00.0: 0x00004050 | flow_handler
[    8.586828] iwlwifi 0000:3b:00.0: Fseq Registers:
[    8.586844] iwlwifi 0000:3b:00.0: 0x00000000 | FSEQ_ERROR_CODE
[    8.586860] iwlwifi 0000:3b:00.0: 0x00000000 | FSEQ_TOP_INIT_VERSION
[    8.586876] iwlwifi 0000:3b:00.0: 0x00000000 | FSEQ_CNVIO_INIT_VERSION
[    8.586891] iwlwifi 0000:3b:00.0: 0x00000000 | FSEQ_OTP_VERSION
[    8.586907] iwlwifi 0000:3b:00.0: 0x00000000 | FSEQ_TOP_CONTENT_VERSION
[    8.586923] iwlwifi 0000:3b:00.0: 0x00000000 | FSEQ_ALIVE_TOKEN
[    8.586939] iwlwifi 0000:3b:00.0: 0x00000000 | FSEQ_CNVI_ID
[    8.586955] iwlwifi 0000:3b:00.0: 0x00000000 | FSEQ_CNVR_ID
[    8.586971] iwlwifi 0000:3b:00.0: 0x00000000 | CNVI_AUX_MISC_CHIP
[    8.586987] iwlwifi 0000:3b:00.0: 0x00000000 | CNVR_AUX_MISC_CHIP
[    8.587003] iwlwifi 0000:3b:00.0: 0x00000000 | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[    8.587019] iwlwifi 0000:3b:00.0: 0x00000000 | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[    8.587036] iwlwifi 0000:3b:00.0: Collecting data: trigger 2 fired.
[    8.587046] ieee80211 phy0: Hardware restart was requested

I checked the firmware which is corresponding to linux-firmware repository commit 07b925b450bf "Install only listed firmware files".