2023-01-22 17:48:59

by Vincent Donnefort

Subject: [Bug] iwlwifi microcode error

Hi all,

Recently, the network card on my laptop (AX201) started to lose the wifi 3 or 4
times a day. When it happens, the only way I have to reconnect is to restart my
network manager.

I found in dmesg the following:

iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
iwlwifi 0000:00:14.3: Transport status: 0x0000004A, valid: 6
iwlwifi 0000:00:14.3: Loaded firmware version: 71.058653f6.0 QuZ-a0-hr-b0-71.ucode
iwlwifi 0000:00:14.3: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL
iwlwifi 0000:00:14.3: 0x0000A200 | trm_hw_status0
iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
iwlwifi 0000:00:14.3: 0x004CBE06 | branchlink2
iwlwifi 0000:00:14.3: 0x0001AB16 | interruptlink1
iwlwifi 0000:00:14.3: 0x0001AB16 | interruptlink2
iwlwifi 0000:00:14.3: 0x004C3E98 | data1
iwlwifi 0000:00:14.3: 0x00001000 | data2
iwlwifi 0000:00:14.3: 0x00000000 | data3
iwlwifi 0000:00:14.3: 0x96800FF7 | beacon time
iwlwifi 0000:00:14.3: 0x424B6011 | tsf low
iwlwifi 0000:00:14.3: 0x000001FB | tsf hi
iwlwifi 0000:00:14.3: 0x00000000 | time gp1
iwlwifi 0000:00:14.3: 0xACE77E1C | time gp2
iwlwifi 0000:00:14.3: 0x00000001 | uCode revision type
iwlwifi 0000:00:14.3: 0x00000047 | uCode version major
iwlwifi 0000:00:14.3: 0x058653F6 | uCode version minor
iwlwifi 0000:00:14.3: 0x00000351 | hw version
iwlwifi 0000:00:14.3: 0x00489001 | board version
iwlwifi 0000:00:14.3: 0x8008FC03 | hcmd
iwlwifi 0000:00:14.3: 0x24020000 | isr0
iwlwifi 0000:00:14.3: 0x01000000 | isr1
iwlwifi 0000:00:14.3: 0x08F04002 | isr2
iwlwifi 0000:00:14.3: 0x04C3200C | isr3
iwlwifi 0000:00:14.3: 0x00000000 | isr4
iwlwifi 0000:00:14.3: 0x04B1001C | last cmd Id
iwlwifi 0000:00:14.3: 0x004C3E98 | wait_event
iwlwifi 0000:00:14.3: 0x000002C8 | l2p_control
iwlwifi 0000:00:14.3: 0x00018014 | l2p_duration
iwlwifi 0000:00:14.3: 0x000000BF | l2p_mhvalid
iwlwifi 0000:00:14.3: 0x000000EF | l2p_addr_match
iwlwifi 0000:00:14.3: 0x00000008 | lmpm_pmg_sel
iwlwifi 0000:00:14.3: 0x00000000 | timestamp
iwlwifi 0000:00:14.3: 0x0000D0A0 | flow_handler
iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
iwlwifi 0000:00:14.3: Transport status: 0x0000004A, valid: 7
iwlwifi 0000:00:14.3: 0x20003463 | ADVANCED_SYSASSERT
iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
iwlwifi 0000:00:14.3: 0x80455B7C | umac branchlink2
iwlwifi 0000:00:14.3: 0xC0081200 | umac interruptlink1
iwlwifi 0000:00:14.3: 0x00000000 | umac interruptlink2
iwlwifi 0000:00:14.3: 0x424B6003 | umac data1
iwlwifi 0000:00:14.3: 0xACE77E0D | umac data2
iwlwifi 0000:00:14.3: 0x96653FD6 | umac data3
iwlwifi 0000:00:14.3: 0x00000047 | umac major
iwlwifi 0000:00:14.3: 0x058653F6 | umac minor
iwlwifi 0000:00:14.3: 0xACE77E16 | frame pointer
iwlwifi 0000:00:14.3: 0xC0885E00 | stack pointer
iwlwifi 0000:00:14.3: 0x0023010C | last host cmd
iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
iwlwifi 0000:00:14.3: IML/ROM dump:
iwlwifi 0000:00:14.3: 0x00000003 | IML/ROM error/state
iwlwifi 0000:00:14.3: 0x00005710 | IML/ROM data1
iwlwifi 0000:00:14.3: 0x00000080 | IML/ROM WFPM_AUTH_KEY_0
iwlwifi 0000:00:14.3: Fseq Registers:
iwlwifi 0000:00:14.3: 0x60000000 | FSEQ_ERROR_CODE
iwlwifi 0000:00:14.3: 0x80290033 | FSEQ_TOP_INIT_VERSION
iwlwifi 0000:00:14.3: 0x00090006 | FSEQ_CNVIO_INIT_VERSION
iwlwifi 0000:00:14.3: 0x0000A482 | FSEQ_OTP_VERSION
iwlwifi 0000:00:14.3: 0x00000003 | FSEQ_TOP_CONTENT_VERSION
iwlwifi 0000:00:14.3: 0x4552414E | FSEQ_ALIVE_TOKEN
iwlwifi 0000:00:14.3: 0x20000302 | FSEQ_CNVI_ID
iwlwifi 0000:00:14.3: 0x01300504 | FSEQ_CNVR_ID
iwlwifi 0000:00:14.3: 0x20000302 | CNVI_AUX_MISC_CHIP
iwlwifi 0000:00:14.3: 0x01300504 | CNVR_AUX_MISC_CHIP
iwlwifi 0000:00:14.3: 0x05B0905B | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
iwlwifi 0000:00:14.3: 0x0000025B | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
iwlwifi 0000:00:14.3: WRT: Collecting data: ini trigger 4 fired (delay=0ms).
ieee80211 phy0: Hardware restart was requested

This seems to only happen when I'm connected to a 802.11e capable router and
after my firmware has been upgraded from 20210818-1 to 20221012-1.

Is that a known issue?

--
Vincent

2023-01-22 19:05:23

by Greenman, Gregory

Subject: Re: [Bug] iwlwifi microcode error

On Sun, 2023-01-22 at 17:48 +0000, Vincent Donnefort wrote:
> Hi all,
>
> Recently, the network card on my laptop (AX201) started to lose the wifi 3 or 4
> times a day. When it happens, the only way I have to reconnect is to restart my
> network manager.
>
> I found in dmesg the following:
>
> iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
> iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
> iwlwifi 0000:00:14.3: Transport status: 0x0000004A, valid: 6
> iwlwifi 0000:00:14.3: Loaded firmware version: 71.058653f6.0 QuZ-a0-hr-b0-71.ucode
> iwlwifi 0000:00:14.3: 0x00000071 | NMI_INTERRUPT_UMAC_FATAL   
> iwlwifi 0000:00:14.3: 0x0000A200 | trm_hw_status0
> iwlwifi 0000:00:14.3: 0x00000000 | trm_hw_status1
> iwlwifi 0000:00:14.3: 0x004CBE06 | branchlink2
> iwlwifi 0000:00:14.3: 0x0001AB16 | interruptlink1
> iwlwifi 0000:00:14.3: 0x0001AB16 | interruptlink2
> iwlwifi 0000:00:14.3: 0x004C3E98 | data1
> iwlwifi 0000:00:14.3: 0x00001000 | data2
> iwlwifi 0000:00:14.3: 0x00000000 | data3
> iwlwifi 0000:00:14.3: 0x96800FF7 | beacon time
> iwlwifi 0000:00:14.3: 0x424B6011 | tsf low
> iwlwifi 0000:00:14.3: 0x000001FB | tsf hi
> iwlwifi 0000:00:14.3: 0x00000000 | time gp1
> iwlwifi 0000:00:14.3: 0xACE77E1C | time gp2
> iwlwifi 0000:00:14.3: 0x00000001 | uCode revision type
> iwlwifi 0000:00:14.3: 0x00000047 | uCode version major
> iwlwifi 0000:00:14.3: 0x058653F6 | uCode version minor
> iwlwifi 0000:00:14.3: 0x00000351 | hw version
> iwlwifi 0000:00:14.3: 0x00489001 | board version
> iwlwifi 0000:00:14.3: 0x8008FC03 | hcmd
> iwlwifi 0000:00:14.3: 0x24020000 | isr0
> iwlwifi 0000:00:14.3: 0x01000000 | isr1
> iwlwifi 0000:00:14.3: 0x08F04002 | isr2
> iwlwifi 0000:00:14.3: 0x04C3200C | isr3
> iwlwifi 0000:00:14.3: 0x00000000 | isr4
> iwlwifi 0000:00:14.3: 0x04B1001C | last cmd Id
> iwlwifi 0000:00:14.3: 0x004C3E98 | wait_event
> iwlwifi 0000:00:14.3: 0x000002C8 | l2p_control
> iwlwifi 0000:00:14.3: 0x00018014 | l2p_duration
> iwlwifi 0000:00:14.3: 0x000000BF | l2p_mhvalid
> iwlwifi 0000:00:14.3: 0x000000EF | l2p_addr_match
> iwlwifi 0000:00:14.3: 0x00000008 | lmpm_pmg_sel
> iwlwifi 0000:00:14.3: 0x00000000 | timestamp
> iwlwifi 0000:00:14.3: 0x0000D0A0 | flow_handler
> iwlwifi 0000:00:14.3: Start IWL Error Log Dump:
> iwlwifi 0000:00:14.3: Transport status: 0x0000004A, valid: 7
> iwlwifi 0000:00:14.3: 0x20003463 | ADVANCED_SYSASSERT
> iwlwifi 0000:00:14.3: 0x00000000 | umac branchlink1
> iwlwifi 0000:00:14.3: 0x80455B7C | umac branchlink2
> iwlwifi 0000:00:14.3: 0xC0081200 | umac interruptlink1
> iwlwifi 0000:00:14.3: 0x00000000 | umac interruptlink2
> iwlwifi 0000:00:14.3: 0x424B6003 | umac data1
> iwlwifi 0000:00:14.3: 0xACE77E0D | umac data2
> iwlwifi 0000:00:14.3: 0x96653FD6 | umac data3
> iwlwifi 0000:00:14.3: 0x00000047 | umac major
> iwlwifi 0000:00:14.3: 0x058653F6 | umac minor
> iwlwifi 0000:00:14.3: 0xACE77E16 | frame pointer
> iwlwifi 0000:00:14.3: 0xC0885E00 | stack pointer
> iwlwifi 0000:00:14.3: 0x0023010C | last host cmd
> iwlwifi 0000:00:14.3: 0x00000000 | isr status reg
> iwlwifi 0000:00:14.3: IML/ROM dump:
> iwlwifi 0000:00:14.3: 0x00000003 | IML/ROM error/state
> iwlwifi 0000:00:14.3: 0x00005710 | IML/ROM data1
> iwlwifi 0000:00:14.3: 0x00000080 | IML/ROM WFPM_AUTH_KEY_0
> iwlwifi 0000:00:14.3: Fseq Registers:
> iwlwifi 0000:00:14.3: 0x60000000 | FSEQ_ERROR_CODE
> iwlwifi 0000:00:14.3: 0x80290033 | FSEQ_TOP_INIT_VERSION
> iwlwifi 0000:00:14.3: 0x00090006 | FSEQ_CNVIO_INIT_VERSION
> iwlwifi 0000:00:14.3: 0x0000A482 | FSEQ_OTP_VERSION
> iwlwifi 0000:00:14.3: 0x00000003 | FSEQ_TOP_CONTENT_VERSION
> iwlwifi 0000:00:14.3: 0x4552414E | FSEQ_ALIVE_TOKEN
> iwlwifi 0000:00:14.3: 0x20000302 | FSEQ_CNVI_ID
> iwlwifi 0000:00:14.3: 0x01300504 | FSEQ_CNVR_ID
> iwlwifi 0000:00:14.3: 0x20000302 | CNVI_AUX_MISC_CHIP
> iwlwifi 0000:00:14.3: 0x01300504 | CNVR_AUX_MISC_CHIP
> iwlwifi 0000:00:14.3: 0x05B0905B | CNVR_SCU_SD_REGS_SD_REG_DIG_DCDC_VTRIM
> iwlwifi 0000:00:14.3: 0x0000025B | CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR
> iwlwifi 0000:00:14.3: WRT: Collecting data: ini trigger 4 fired (delay=0ms).
> ieee80211 phy0: Hardware restart was requested
>
> This seems to only happen when I'm connected to a 802.11e capable router and
> after my firmware has been upgraded from 20210818-1 to 20221012-1.
>
> Is that a known issue?
>

It's not a known issue. The firmware crash is related to 802.11ax Target Wake Time (TWT) feature.
Since it's a a firmware crash, I'd like to ask to collect some debug information, so we'd be able
to understand what caused it. In [1] we have directions how to do it. If you you can collect trace-cmd
and firmware dump will be great, but if you can also collect an air-sniffer it'll really help to
get to the root cause. Thanks! 

[1] https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging