I've installed Ubuntu 20.04 LTS a few days and started having issues with the wifi adapter,where it would randomly stop working after some point of time . Looking through dmesg for clues as to what is going on, I saw
Queue 11 is active on fifo 1 and stuck for 10000 ms. SW [210, 236] HW [210, 236] FH TRB=0x0c010b0e1
I used Ubnuntu 18.04 LTS on this computer and never happened, but when I change 20.04 then happened frquently .It makes me hard to use SSH to control my computer.
[ 3.853816] iwlwifi 0000:01:00.0: Found debug destination: EXTERNAL_DRAM
[ 3.853818] iwlwifi 0000:01:00.0: Found debug configuration: 0
[ 3.853972] iwlwifi 0000:01:00.0: loaded firmware version 29.1654887522.0 7265D-29.ucode op_mode iwlmvm
[ 3.916546] iwlwifi 0000:01:00.0: Detected Intel(R) Dual Band Wireless AC 3165, REV=0x210
[ 3.930317] iwlwifi 0000:01:00.0: Applying debug destination EXTERNAL_DRAM
[ 3.930587] iwlwifi 0000:01:00.0: Allocated 0x00400000 bytes for firmware monitor.
[ 3.935431] iwlwifi 0000:01:00.0: base HW address: b4:6b:fc:58:0d:63
[ 3.996019] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 3.999858] iwlwifi 0000:01:00.0 wlp1s0: renamed from wlan0
[ 5.348555] iwlwifi 0000:01:00.0: Applying debug destination EXTERNAL_DRAM
[ 5.431408] iwlwifi 0000:01:00.0: Applying debug destination EXTERNAL_DRAM
[ 5.432571] iwlwifi 0000:01:00.0: FW already configured (0) - re-configuring
[ 26.444024] iwlwifi 0000:01:00.0: Queue 11 is active on fifo 1 and stuck for 10000 ms. SW [78, 106] HW [78, 106] FH TRB=0x0c010b05d
[ 26.445096] iwlwifi 0000:01:00.0: Microcode SW error detected. Restarting 0x2000000.
[ 26.445256] iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
[ 26.445257] iwlwifi 0000:01:00.0: Status: 0x00000040, count: 6
[ 26.445259] iwlwifi 0000:01:00.0: Loaded firmware version: 29.1654887522.0 7265D-29.ucode
[ 26.445260] iwlwifi 0000:01:00.0: 0x00000084 | NMI_INTERRUPT_UNKNOWN
[ 26.445262] iwlwifi 0000:01:00.0: 0x000006F7 | trm_hw_status0
[ 26.445263] iwlwifi 0000:01:00.0: 0x00000000 | trm_hw_status1
[ 26.445264] iwlwifi 0000:01:00.0: 0x00043D6C | branchlink2
[ 26.445265] iwlwifi 0000:01:00.0: 0x0004AFD6 | interruptlink1
[ 26.445266] iwlwifi 0000:01:00.0: 0x0000734C | interruptlink2
[ 26.445267] iwlwifi 0000:01:00.0: 0x00000000 | data1
[ 26.445268] iwlwifi 0000:01:00.0: 0x00000080 | data2
[ 26.445269] iwlwifi 0000:01:00.0: 0x03030000 | data3
[ 26.445270] iwlwifi 0000:01:00.0: 0x2A009873 | beacon time
[ 26.445271] iwlwifi 0000:01:00.0: 0x77D6E78E | tsf low
[ 26.445272] iwlwifi 0000:01:00.0: 0x000000B2 | tsf hi
[ 26.445273] iwlwifi 0000:01:00.0: 0x00000000 | time gp1
[ 26.445274] iwlwifi 0000:01:00.0: 0x0140A4B0 | time gp2
[ 26.445275] iwlwifi 0000:01:00.0: 0x00000001 | uCode revision type
[ 26.445276] iwlwifi 0000:01:00.0: 0x0000001D | uCode version major
[ 26.445277] iwlwifi 0000:01:00.0: 0x62A39462 | uCode version minor
[ 26.445278] iwlwifi 0000:01:00.0: 0x00000210 | hw version
[ 26.445279] iwlwifi 0000:01:00.0: 0x00C89200 | board version
[ 26.445280] iwlwifi 0000:01:00.0: 0x0B4E001C | hcmd
[ 26.445281] iwlwifi 0000:01:00.0: 0x82E22002 | isr0
[ 26.445282] iwlwifi 0000:01:00.0: 0x01804000 | isr1
[ 26.445283] iwlwifi 0000:01:00.0: 0x0000000A | isr2
[ 26.445284] iwlwifi 0000:01:00.0: 0x00400086 | isr3
[ 26.445285] iwlwifi 0000:01:00.0: 0x00000000 | isr4
[ 26.445286] iwlwifi 0000:01:00.0: 0x007E019C | last cmd Id
[ 26.445287] iwlwifi 0000:01:00.0: 0x00000000 | wait_event
[ 26.445288] iwlwifi 0000:01:00.0: 0x00000850 | l2p_control
[ 26.445289] iwlwifi 0000:01:00.0: 0x00003C22 | l2p_duration
[ 26.445290] iwlwifi 0000:01:00.0: 0x0000003F | l2p_mhvalid
[ 26.445291] iwlwifi 0000:01:00.0: 0x00000000 | l2p_addr_match
[ 26.445292] iwlwifi 0000:01:00.0: 0x00000007 | lmpm_pmg_sel
[ 26.445293] iwlwifi 0000:01:00.0: 0x16070611 | timestamp
[ 26.445294] iwlwifi 0000:01:00.0: 0x003498A8 | flow_handler
[ 26.445306] iwlwifi 0000:01:00.0: Fseq Registers:
[ 26.445312] iwlwifi 0000:01:00.0: 0x00000000 | FSEQ_ERROR_CODE
[ 26.445318] iwlwifi 0000:01:00.0: 0x00000000 | FSEQ_TOP_INIT_VERSION
[ 26.445324] iwlwifi 0000:01:00.0: 0x00000000 | FSEQ_CNVIO_INIT_VERSION
[ 26.445330] iwlwifi 0000:01:00.0: 0x00000000 | FSEQ_OTP_VERSION
[ 26.445336] iwlwifi 0000:01:00.0: 0x00000000 | FSEQ_TOP_CONTENT_VERSION
[ 26.445342] iwlwifi 0000:01:00.0: 0x00000000 | FSEQ_ALIVE_TOKEN
[ 26.445348] iwlwifi 0000:01:00.0: 0x00000000 | FSEQ_CNVI_ID
[ 26.445354] iwlwifi 0000:01:00.0: 0x00000000 | FSEQ_CNVR_ID
[ 26.445360] iwlwifi 0000:01:00.0: 0x00000000 | CNVI_AUX_MISC_CHIP
[ 26.445366] iwlwifi 0000:01:00.0: 0x00000000 | CNVR_AUX_MISC_CHIP
[ 26.445372] iwlwifi 0000:01:00.0: 0x00000000 | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[ 26.445378] iwlwifi 0000:01:00.0: 0x00000000 | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[ 26.445383] iwlwifi 0000:01:00.0: Collecting data: trigger 2 fired.
[ 26.611294] iwlwifi 0000:01:00.0: Applying debug destination EXTERNAL_DRAM
[ 26.688984] iwlwifi 0000:01:00.0: Applying debug destination EXTERNAL_DRAM
[ 26.690194] iwlwifi 0000:01:00.0: FW already configured (0) - re-configuring ```
