I have a Dell XPS 13 9360 with a this Intel wifi card:
iwlwifi 0000:3a:00.0: Detected Intel(R) Dual Band Wireless AC 3160, REV=0x164
(Note that this laptop did not originally ship with this card.
It shipped with a card from another vendor that was so
unreliable for suspend/resume endurance testing that I had to replace it.
And until now, this Intel card has been performing well)
I recently installed Fedora 35, and the card worked fine.
But when I built and booted a 5.15 or 5.16 upstream kernel from src,
the card fails at initialization and I've not found a way to revive it.
(dmesg below)
Since the word "Microcode" was involved, I feared there was some
mis-match between Fedora and upstream. So I installed Ubuntu 21.10 --
but the same thing happened. wifi worked for the Ubuntu kernel, but
not for an upstream 5.16 kernel.
(I use a config that starts with the distro config, and is updated
with a "make localmodconfig", any any other tweaks to turn off
distro-specific stuff that doesn't build upstream)
Is this a known problem (with a known solution?)
thanks,
Len Brown, Intel Open Source Technology Center
lenb@lenb-Dell-XPS-13-9360:~$ grep iwlwifi dmesg.ubuntu
[ 2.018698] iwlwifi 0000:3a:00.0: enabling device (0000 -> 0002)
[ 2.035549] iwlwifi 0000:3a:00.0: loaded firmware version
17.3216344376.0 3160-17.ucode op_mode iwlmvm
[ 2.118226] iwlwifi 0000:3a:00.0: Detected Intel(R) Dual Band
Wireless AC 3160, REV=0x164
[ 2.144883] iwlwifi 0000:3a:00.0: base HW address: e4:02:9b:c0:4d:f1
[ 3.049603] iwlwifi 0000:3a:00.0 wlp58s0: renamed from wlan0
[ 11.406530] iwlwifi 0000:3a:00.0: Microcode SW error detected.
Restarting 0x2000000.
[ 11.408338] iwlwifi 0000:3a:00.0: Start IWL Error Log Dump:
[ 11.409829] iwlwifi 0000:3a:00.0: Transport status: 0x0000004B, valid: 6
[ 11.411533] iwlwifi 0000:3a:00.0: Loaded firmware version:
17.3216344376.0 3160-17.ucode
[ 11.412815] iwlwifi 0000:3a:00.0: 0x00000038 | BAD_COMMAND
[ 11.414597] iwlwifi 0000:3a:00.0: 0x000002F0 | trm_hw_status0
[ 11.416155] iwlwifi 0000:3a:00.0: 0x00000000 | trm_hw_status1
[ 11.417542] iwlwifi 0000:3a:00.0: 0x00000B30 | branchlink2
[ 11.419140] iwlwifi 0000:3a:00.0: 0x00014908 | interruptlink1
[ 11.420414] iwlwifi 0000:3a:00.0: 0x00000000 | interruptlink2
[ 11.421799] iwlwifi 0000:3a:00.0: 0xDEADBEEF | data1
[ 11.424074] iwlwifi 0000:3a:00.0: 0xDEADBEEF | data2
[ 11.425305] iwlwifi 0000:3a:00.0: 0xDEADBEEF | data3
[ 11.427531] iwlwifi 0000:3a:00.0: 0x003FE220 | beacon time
[ 11.429713] iwlwifi 0000:3a:00.0: 0x00001DDE | tsf low
[ 11.432221] iwlwifi 0000:3a:00.0: 0x00000000 | tsf hi
[ 11.434755] iwlwifi 0000:3a:00.0: 0x00000000 | time gp1
[ 11.437282] iwlwifi 0000:3a:00.0: 0x00001DE0 | time gp2
[ 11.439847] iwlwifi 0000:3a:00.0: 0x00000000 | uCode revision type
[ 11.441340] iwlwifi 0000:3a:00.0: 0x00000011 | uCode version major
[ 11.443347] iwlwifi 0000:3a:00.0: 0xBFB58538 | uCode version minor
[ 11.445820] iwlwifi 0000:3a:00.0: 0x00000164 | hw version
[ 11.448265] iwlwifi 0000:3a:00.0: 0x00C89204 | board version
[ 11.450758] iwlwifi 0000:3a:00.0: 0x001E0405 | hcmd
[ 11.453217] iwlwifi 0000:3a:00.0: 0x00022080 | isr0
[ 11.455648] iwlwifi 0000:3a:00.0: 0x00000000 | isr1
[ 11.458300] iwlwifi 0000:3a:00.0: 0x00000002 | isr2
[ 11.460747] iwlwifi 0000:3a:00.0: 0x004000C0 | isr3
[ 11.463125] iwlwifi 0000:3a:00.0: 0x00000000 | isr4
[ 11.465510] iwlwifi 0000:3a:00.0: 0x01000112 | last cmd Id
[ 11.467867] iwlwifi 0000:3a:00.0: 0x00000000 | wait_event
[ 11.470215] iwlwifi 0000:3a:00.0: 0x000000D4 | l2p_control
[ 11.472553] iwlwifi 0000:3a:00.0: 0x00000000 | l2p_duration
[ 11.474865] iwlwifi 0000:3a:00.0: 0x00000000 | l2p_mhvalid
[ 11.477236] iwlwifi 0000:3a:00.0: 0x00000000 | l2p_addr_match
[ 11.479364] iwlwifi 0000:3a:00.0: 0x00000007 | lmpm_pmg_sel
[ 11.481481] iwlwifi 0000:3a:00.0: 0x15041745 | timestamp
[ 11.483595] iwlwifi 0000:3a:00.0: 0x00001828 | flow_handler
[ 11.485692] iwlwifi 0000:3a:00.0: Fseq Registers:
[ 11.487917] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_ERROR_CODE
[ 11.490156] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_TOP_INIT_VERSION
[ 11.492372] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_CNVIO_INIT_VERSION
[ 11.494577] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_OTP_VERSION
[ 11.496734] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_TOP_CONTENT_VERSION
[ 11.498586] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_ALIVE_TOKEN
[ 11.499921] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_CNVI_ID
[ 11.501279] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_CNVR_ID
[ 11.502465] iwlwifi 0000:3a:00.0: 0x00000000 | CNVI_AUX_MISC_CHIP
[ 11.503572] iwlwifi 0000:3a:00.0: 0x00000000 | CNVR_AUX_MISC_CHIP
[ 11.504681] iwlwifi 0000:3a:00.0: 0x00000000 |
CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[ 11.505770] iwlwifi 0000:3a:00.0: 0x00000000 |
CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[ 11.506709] iwlwifi 0000:3a:00.0: Starting mac, retry will be
triggered anyway
[ 11.507645] iwlwifi 0000:3a:00.0: FW error in SYNC CMD
PER_CHAIN_LIMIT_OFFSET_CMD
[ 11.508634] iwl_trans_txq_send_hcmd+0x45c/0x470 [iwlwifi]
[ 11.508657] iwl_trans_send_cmd+0x66/0xf0 [iwlwifi]
[ 11.508926] iwlwifi 0000:3a:00.0: Failed to send MAC context (action:1): -5
[ 11.509884] iwlwifi 0000:3a:00.0: Failed to disable queue 1 (ret=-5)
[ 11.510899] iwlwifi 0000:3a:00.0: Failed to remove station. Id=1
[ 11.511864] iwlwifi 0000:3a:00.0: Failed sending remove station
[ 11.687220] iwlwifi 0000:3a:00.0: Microcode SW error detected.
Restarting 0x2000000.
[ 11.687472] iwlwifi 0000:3a:00.0: Start IWL Error Log Dump:
[ 11.687475] iwlwifi 0000:3a:00.0: Transport status: 0x0000004B, valid: 6
[ 11.687479] iwlwifi 0000:3a:00.0: Loaded firmware version:
17.3216344376.0 3160-17.ucode
[ 11.687481] iwlwifi 0000:3a:00.0: 0x00000038 | BAD_COMMAND
[ 11.687484] iwlwifi 0000:3a:00.0: 0x000002F0 | trm_hw_status0
[ 11.687487] iwlwifi 0000:3a:00.0: 0x00000000 | trm_hw_status1
[ 11.687489] iwlwifi 0000:3a:00.0: 0x00000B30 | branchlink2
[ 11.687491] iwlwifi 0000:3a:00.0: 0x00014908 | interruptlink1
[ 11.687493] iwlwifi 0000:3a:00.0: 0x00000000 | interruptlink2
[ 11.687495] iwlwifi 0000:3a:00.0: 0xDEADBEEF | data1
[ 11.687496] iwlwifi 0000:3a:00.0: 0xDEADBEEF | data2
[ 11.687498] iwlwifi 0000:3a:00.0: 0xDEADBEEF | data3
[ 11.687499] iwlwifi 0000:3a:00.0: 0x003FD637 | beacon time
[ 11.687501] iwlwifi 0000:3a:00.0: 0x000029C7 | tsf low
[ 11.687502] iwlwifi 0000:3a:00.0: 0x00000000 | tsf hi
[ 11.687504] iwlwifi 0000:3a:00.0: 0x00000000 | time gp1
[ 11.687506] iwlwifi 0000:3a:00.0: 0x000029C8 | time gp2
[ 11.687508] iwlwifi 0000:3a:00.0: 0x00000000 | uCode revision type
[ 11.687509] iwlwifi 0000:3a:00.0: 0x00000011 | uCode version major
[ 11.687511] iwlwifi 0000:3a:00.0: 0xBFB58538 | uCode version minor
[ 11.687513] iwlwifi 0000:3a:00.0: 0x00000164 | hw version
[ 11.687515] iwlwifi 0000:3a:00.0: 0x00C89204 | board version
[ 11.687517] iwlwifi 0000:3a:00.0: 0x001D0405 | hcmd
[ 11.687519] iwlwifi 0000:3a:00.0: 0x00022080 | isr0
[ 11.687522] iwlwifi 0000:3a:00.0: 0x00000000 | isr1
[ 11.687524] iwlwifi 0000:3a:00.0: 0x00000002 | isr2
[ 11.687526] iwlwifi 0000:3a:00.0: 0x004000C0 | isr3
[ 11.687527] iwlwifi 0000:3a:00.0: 0x00000000 | isr4
[ 11.687530] iwlwifi 0000:3a:00.0: 0x01000112 | last cmd Id
[ 11.687532] iwlwifi 0000:3a:00.0: 0x00000000 | wait_event
[ 11.687534] iwlwifi 0000:3a:00.0: 0x000000D4 | l2p_control
[ 11.687536] iwlwifi 0000:3a:00.0: 0x00000000 | l2p_duration
[ 11.687538] iwlwifi 0000:3a:00.0: 0x00000000 | l2p_mhvalid
[ 11.687541] iwlwifi 0000:3a:00.0: 0x00000000 | l2p_addr_match
[ 11.687543] iwlwifi 0000:3a:00.0: 0x00000007 | lmpm_pmg_sel
[ 11.687544] iwlwifi 0000:3a:00.0: 0x15041745 | timestamp
[ 11.687546] iwlwifi 0000:3a:00.0: 0x00001828 | flow_handler
[ 11.687549] iwlwifi 0000:3a:00.0: Fseq Registers:
[ 11.687694] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_ERROR_CODE
[ 11.687749] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_TOP_INIT_VERSION
[ 11.687804] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_CNVIO_INIT_VERSION
[ 11.687859] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_OTP_VERSION
[ 11.687914] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_TOP_CONTENT_VERSION
[ 11.687964] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_ALIVE_TOKEN
[ 11.688019] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_CNVI_ID
[ 11.688074] iwlwifi 0000:3a:00.0: 0x00000000 | FSEQ_CNVR_ID
[ 11.688130] iwlwifi 0000:3a:00.0: 0x00000000 | CNVI_AUX_MISC_CHIP
[ 11.688185] iwlwifi 0000:3a:00.0: 0x00000000 | CNVR_AUX_MISC_CHIP
[ 11.688240] iwlwifi 0000:3a:00.0: 0x00000000 |
CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
[ 11.688295] iwlwifi 0000:3a:00.0: 0x00000000 |
CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
[ 11.688299] iwlwifi 0000:3a:00.0: Starting mac, retry will be
triggered anyway
[ 11.688317] iwlwifi 0000:3a:00.0: FW error in SYNC CMD
PER_CHAIN_LIMIT_OFFSET_CMD
[ 11.688339] iwl_trans_txq_send_hcmd+0x45c/0x470 [iwlwifi]
[ 11.688366] iwl_trans_send_cmd+0x66/0xf0 [iwlwifi]
...