Groups > linux.debian.kernel > #52881 > unrolled thread

Bug#815037: "Microcode SW error detected. Restarting ..." every few seconds

Started by	Yaroslav Halchenko <debian@onerussian.com>
First post	2016-02-18 06:00 +0100
Last post	2021-03-14 16:40 +0100
Articles	6 — 6 participants

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  Bug#815037: "Microcode SW error detected.  Restarting ..." every few seconds Yaroslav Halchenko <debian@onerussian.com> - 2016-02-18 06:00 +0100
    Bug#815037: firmware-iwlwifi: still present in version 20170823-1 Eric Van Buggenhaut <ericvb69@gmail.com> - 2017-11-19 18:50 +0100
    Bug#815037: firmware-iwlwifi: Bug also leads to kernel panic and freezes "Daniel M." <danielhl.83@googlemail.com> - 2017-12-20 20:50 +0100
    Bug#815037: problem still present in Stretch and stretch-backports? Toni Mueller <toni@debian.org> - 2018-05-01 02:10 +0200
    Bug#815037: Fixed upstream? Paride Legovini <pl@ninthfloor.org> - 2019-02-19 10:30 +0100
    Bug#815037: marked as done ("Microcode SW error detected.   Restarting ..." every few seconds) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2021-03-14 16:40 +0100

#52881 — Bug#815037: "Microcode SW error detected. Restarting ..." every few seconds

From	Yaroslav Halchenko <debian@onerussian.com>
Date	2016-02-18 06:00 +0100
Subject	Bug#815037: "Microcode SW error detected. Restarting ..." every few seconds
Message-ID	<r3oR3-ir-1@gated-at.bofh.it>

Package: firmware-iwlwifi
Version: 20160110-1
Severity: normal

I don't remember since when it started but currently it seems to happen under
any load -- it does recover and manages to fetch the load but at slow speeds
and causing delayes, here is what is seen in messages:

Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: Microcode SW error detected.  Restarting 0x2000000.
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: CSR values:
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:        CSR_HW_IF_CONFIG_REG: 0X40489204
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:          CSR_INT_COALESCING: 0X8000ff40
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                     CSR_INT: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                CSR_INT_MASK: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:           CSR_FH_INT_STATUS: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                 CSR_GPIO_IN: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                   CSR_RESET: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                CSR_GP_CNTRL: 0X080403cd
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                  CSR_HW_REV: 0X00000144
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:              CSR_EEPROM_REG: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:               CSR_EEPROM_GP: 0X80000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:              CSR_OTP_GP_REG: 0X803a0000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                 CSR_GIO_REG: 0X001f0042
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:            CSR_GP_UCODE_REG: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:           CSR_GP_DRIVER_REG: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                 CSR_LED_REG: 0X00000060
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:        CSR_DRAM_INT_TBL_REG: 0X8843a242
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:             CSR_ANA_PLL_CFG: 0Xd55555d5
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:      CSR_MONITOR_STATUS_REG: 0X3d0801bd
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0010
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: FH register values:
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X43add500
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X043add40
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X00000008
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: Status: 0x00000000, count: 6
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: Loaded firmware version: 16.242414.0
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00002078 | ADVANCED_SYSASSERT          
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00A00281 | uPc
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000000 | branchlink1
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000B2C | branchlink2
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00016A90 | interruptlink1
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x001C46DA | interruptlink2
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0xDEADBEEF | data1
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0xDEADBEEF | data2
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0xDEADBEEF | data3
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x158099C9 | beacon time
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x6A82873B | tsf low
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000001 | tsf hi
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000000 | time gp1
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00EE014C | time gp2
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000000 | time gp3
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000010 | uCode version major
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x0003B2EE | uCode version minor
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000144 | hw version
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x40489204 | board version
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x0946004E | hcmd
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x20122080 | isr0
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000000 | isr1
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x0000000A | isr2
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x004000C0 | isr3
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000000 | isr4
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x01000112 | isr_pref
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000000 | wait_event
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00004288 | l2p_control
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00018824 | l2p_duration
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000000 | l2p_mhvalid
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x000000EF | l2p_addr_match
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000005 | lmpm_pmg_sel
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x17111905 | timestamp
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: 0x00000820 | flow_handler
Feb 17 23:44:38 hopa kernel: ieee80211 phy0: Hardware restart was requested
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
Feb 17 23:44:38 hopa kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled

some detail

1. kernel was built manually from dailies of intel drm team to troubleshoot a
problem I have with external dock, but I hope it is not relevant since a)
failure  seems to be coming from the firmware itself, b) I think it was working
more robustly before even with this kernel

$> uname -a
Linux hopa 4.4.0-rc1+ #1 SMP Thu Nov 19 21:18:51 EST 2015 x86_64 GNU/Linux


2. loading firmware -- updated firmware-iwlwifi recently,  not sure why
it is seeking for -17.ucode since I have only /lib/firmware/iwlwifi-7260-16.ucode
(how to fetch a version from the firmware file to see what 16.242414.0  matches?)

$> journalctl -b 0 | grep iwlwifi | head
Feb 16 13:57:14 hopa kernel: iwlwifi: unknown parameter 'disable_11n' ignored
Feb 16 13:57:14 hopa kernel: iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7260-17.ucode failed with error -2
Feb 16 13:57:14 hopa kernel: iwlwifi 0000:02:00.0: loaded firmware version 16.242414.0 op_mode iwlmvm
Feb 16 13:57:14 hopa kernel: iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless N 7260, REV=0x144
Feb 16 13:57:14 hopa kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
Feb 16 13:57:14 hopa kernel: iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
Feb 16 13:57:14 hopa kernel: iwlwifi 0000:02:00.0 wlan0: set_features() failed (-1); wanted 0x0000000000004000, left 0x0000000000004800
Feb 16 13:57:29 hopa kernel: iwlwifi 0000:02:00.0 wlan0: set_features() failed (-1); wanted 0x0000000000006000, left 0x0000000000006800

3. iwconfig reports:

$> iwconfig wlan0
wlan0     IEEE 802.11abgn  ESSID:"ESCAPE"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: C4:3D:C7:57:1F:CE   
          Bit Rate=150 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=67/70  Signal level=-43 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:244  Invalid misc:7152   Missed beacon:0

4. my wireless:

$> lspci | grep Wireless
02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73)


any advice on how to mitigate this erratic behavior would be appreciated!

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (900, 'testing'), (600, 'unstable'), (300, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.4.0-rc1+ (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

firmware-iwlwifi depends on no packages.

firmware-iwlwifi recommends no packages.

Versions of packages firmware-iwlwifi suggests:
ii  initramfs-tools  0.120

-- no debconf information

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#59443 — Bug#815037: firmware-iwlwifi: still present in version 20170823-1

From	Eric Van Buggenhaut <ericvb69@gmail.com>
Date	2017-11-19 18:50 +0100
Subject	Bug#815037: firmware-iwlwifi: still present in version 20170823-1
Message-ID	<uNBTb-2r9-5@gated-at.bofh.it>
In reply to	#52881

I still experience this bug in firmware 18.168.6.1 which ships in latest sid.

My card is:

Intel Wireless 6005/6205 firmware, version 18.168.6.1
   (iwlwifi-6000g2a-6.ucode)

[155772.452945] iwlwifi 0000:03:00.0: Microcode SW error detected.
Restarting 0x2000000.
[155772.452961] iwlwifi 0000:03:00.0: CSR values:
[155772.452963] iwlwifi 0000:03:00.0: (2nd byte of CSR_INT_COALESCING
is CSR_INT_PERIODIC_REG)
[155772.452993] iwlwifi 0000:03:00.0:        CSR_HW_IF_CONFIG_REG: 0X00488700
[155772.453019] iwlwifi 0000:03:00.0:          CSR_INT_COALESCING: 0X0000ff40
[155772.453045] iwlwifi 0000:03:00.0:                     CSR_INT: 0X00000000
[155772.453071] iwlwifi 0000:03:00.0:                CSR_INT_MASK: 0X00000000
[155772.453097] iwlwifi 0000:03:00.0:           CSR_FH_INT_STATUS: 0X00000000
[155772.453123] iwlwifi 0000:03:00.0:                 CSR_GPIO_IN: 0X00000030
[155772.453149] iwlwifi 0000:03:00.0:                   CSR_RESET: 0X00000000
[155772.453174] iwlwifi 0000:03:00.0:                CSR_GP_CNTRL: 0X080403c5
[155772.453200] iwlwifi 0000:03:00.0:                  CSR_HW_REV: 0X000000b0
[155772.453226] iwlwifi 0000:03:00.0:              CSR_EEPROM_REG: 0Xb4440ffd
[155772.453252] iwlwifi 0000:03:00.0:               CSR_EEPROM_GP: 0X90000001
[155772.453278] iwlwifi 0000:03:00.0:              CSR_OTP_GP_REG: 0X00030001
[155772.453304] iwlwifi 0000:03:00.0:                 CSR_GIO_REG: 0X00080042
[155772.453330] iwlwifi 0000:03:00.0:            CSR_GP_UCODE_REG: 0X0000026f
[155772.453356] iwlwifi 0000:03:00.0:           CSR_GP_DRIVER_REG: 0X00000000
[155772.453382] iwlwifi 0000:03:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
[155772.453409] iwlwifi 0000:03:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
[155772.453435] iwlwifi 0000:03:00.0:                 CSR_LED_REG: 0X00000040
[155772.453462] iwlwifi 0000:03:00.0:        CSR_DRAM_INT_TBL_REG: 0X8828c7fd
[155772.453489] iwlwifi 0000:03:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
[155772.453515] iwlwifi 0000:03:00.0:             CSR_ANA_PLL_CFG: 0X00000000
[155772.453541] iwlwifi 0000:03:00.0:      CSR_MONITOR_STATUS_REG: 0X6bf7f757
[155772.453568] iwlwifi 0000:03:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
[155772.453594] iwlwifi 0000:03:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0000
[155772.453596] iwlwifi 0000:03:00.0: FH register values:
[155772.453634] iwlwifi 0000:03:00.0:
FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X28bbb700
[155772.453656] iwlwifi 0000:03:00.0:
FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X02907d60
[155772.453678] iwlwifi 0000:03:00.0:
FH_RSCSR_CHNL0_WPTR: 0X00000040
[155772.453701] iwlwifi 0000:03:00.0:
FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
[155772.453728] iwlwifi 0000:03:00.0:
FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
[155772.453772] iwlwifi 0000:03:00.0:
FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
[155772.453795] iwlwifi 0000:03:00.0:
FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
[155772.453822] iwlwifi 0000:03:00.0:
FH_TSSR_TX_STATUS_REG: 0X07ff0001
[155772.453845] iwlwifi 0000:03:00.0:
FH_TSSR_TX_ERROR_REG: 0X00000000

[155772.453848] iwlwifi 0000:03:00.0: Loaded firmware version: 18.168.6.1
[155772.454009] iwlwifi 0000:03:00.0: Start IWL Error Log Dump:
[155772.454012] iwlwifi 0000:03:00.0: Status: 0x000002CC, count: 6
[155772.454014] iwlwifi 0000:03:00.0: 0x000014E1 | ADVANCED_SYSASSERT
[155772.454016] iwlwifi 0000:03:00.0: 0x00017144 | uPc
[155772.454018] iwlwifi 0000:03:00.0: 0x000171AC | branchlink1
[155772.454020] iwlwifi 0000:03:00.0: 0x000171AC | branchlink2
[155772.454022] iwlwifi 0000:03:00.0: 0x0000D6BE | interruptlink1
[155772.454023] iwlwifi 0000:03:00.0: 0x00000000 | interruptlink2
[155772.454025] iwlwifi 0000:03:00.0: 0x00000000 | data1
[155772.454027] iwlwifi 0000:03:00.0: 0x00000000 | data2
[155772.454028] iwlwifi 0000:03:00.0: 0x000000A2 | line
[155772.454030] iwlwifi 0000:03:00.0: 0x0500C839 | beacon time
[155772.454032] iwlwifi 0000:03:00.0: 0x002007C7 | tsf low
[155772.454033] iwlwifi 0000:03:00.0: 0x00000000 | tsf hi
[155772.454035] iwlwifi 0000:03:00.0: 0x00000000 | time gp1
[155772.454037] iwlwifi 0000:03:00.0: 0x00213537 | time gp2
[155772.454038] iwlwifi 0000:03:00.0: 0x00000000 | time gp3
[155772.454040] iwlwifi 0000:03:00.0: 0x754312A8 | uCode version
[155772.454042] iwlwifi 0000:03:00.0: 0x000000B0 | hw version
[155772.454044] iwlwifi 0000:03:00.0: 0x00488700 | board version
[155772.454045] iwlwifi 0000:03:00.0: 0x0000001C | hcmd
[155772.454047] iwlwifi 0000:03:00.0: 0x27863040 | isr0
[155772.454048] iwlwifi 0000:03:00.0: 0x11004000 | isr1
[155772.454050] iwlwifi 0000:03:00.0: 0x00000E02 | isr2
[155772.454052] iwlwifi 0000:03:00.0: 0x01451CC2 | isr3
[155772.454054] iwlwifi 0000:03:00.0: 0x00000000 | isr4
[155772.454055] iwlwifi 0000:03:00.0: 0x00080110 | isr_pref
[155772.454057] iwlwifi 0000:03:00.0: 0x00000272 | wait_event
[155772.454059] iwlwifi 0000:03:00.0: 0x00000288 | l2p_control
[155772.454061] iwlwifi 0000:03:00.0: 0x0000002C | l2p_duration
[155772.454062] iwlwifi 0000:03:00.0: 0x000000BF | l2p_mhvalid
[155772.454064] iwlwifi 0000:03:00.0: 0x00000000 | l2p_addr_match
[155772.454065] iwlwifi 0000:03:00.0: 0x00000005 | lmpm_pmg_sel
[155772.454067] iwlwifi 0000:03:00.0: 0x06061222 | timestamp
[155772.454069] iwlwifi 0000:03:00.0: 0x00003850 | flow_handler
[155772.454155] iwlwifi 0000:03:00.0: Start IWL Event Log Dump: nothing in log


-- 
Eric

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#59713 — Bug#815037: firmware-iwlwifi: Bug also leads to kernel panic and freezes

From	"Daniel M." <danielhl.83@googlemail.com>
Date	2017-12-20 20:50 +0100
Subject	Bug#815037: firmware-iwlwifi: Bug also leads to kernel panic and freezes
Message-ID	<uYSxj-HH-1@gated-at.bofh.it>
In reply to	#52881

Bug message and freezes / panic is solved when I downgraded to stable.
So no HW problem.

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#60790 — Bug#815037: problem still present in Stretch and stretch-backports?

From	Toni Mueller <toni@debian.org>
Date	2018-05-01 02:10 +0200
Subject	Bug#815037: problem still present in Stretch and stretch-backports?
Message-ID	<vKr1M-390-7@gated-at.bofh.it>
In reply to	#52881


Hi,

I am seeing this problem with

linux-image-4.15.0-0.bpo.2-amd64 4.15.11-1~bpo9+1 amd64 and firmware-iwlwifi 20170823-1~bpo9+1, and with their counterparts from Stable on my
XPS 13 from around 2013.

FWIW, on some networks, I have no trouble connecting, but on others, it just
won't work at all. I've tried this backport version after losing
connectivity with the stable package.



$ journalctl -b 0 | grep iwlwifi | head
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: can't disable ASPM; OS doesn't have ASPM control
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: firmware: direct-loading firmware iwlwifi-6000g2b-6.ucode
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: loaded firmware version 18.168.6.1 op_mode iwldvm
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEBUG disabled
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 30 23:27:08 debian kernel: iwlwifi 0000:01:00.0: Detected Intel(R) Centrino(R) Advanced-N 6235 AGN, REV=0xB0
Apr 30 23:27:09 debian kernel: iwlwifi 0000:01:00.0: Radio type=0x2-0x1-0x0
Apr 30 23:27:09 debian kernel: iwlwifi 0000:01:00.0: Radio type=0x2-0x1-0x0
Apr 30 23:27:38 debian kernel: iwlwifi 0000:01:00.0: Radio type=0x2-0x1-0x0


$ iwconfig wlan0                       
wlan0     IEEE 802.11  ESSID:off/any  
          Mode:Managed  Frequency:5.22 GHz  Access Point: Not-Associated   
          Tx-Power=15 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off




Here's one such section from the logs, I get them every few seconds:


Apr 30 23:43:30 debian kernel: [  995.983609] ieee80211 phy0: Hardware restart was requested
Apr 30 23:43:30 debian kernel: [  995.996648] iwlwifi 0000:01:00.0: Radio type=0x2-0x1-0x0
Apr 30 23:43:30 debian kernel: [  996.297641] iwlwifi 0000:01:00.0: Radio type=0x2-0x1-0x0
Apr 30 23:43:38 debian kernel: [ 1003.669572] iwlwifi 0000:01:00.0: Microcode SW error detected.  Restarting 0x2000000.
Apr 30 23:43:38 debian kernel: [ 1003.669589] iwlwifi 0000:01:00.0: Loaded firmware version: 18.168.6.1
Apr 30 23:43:38 debian kernel: [ 1003.669781] iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
Apr 30 23:43:38 debian kernel: [ 1003.669789] iwlwifi 0000:01:00.0: Status: 0x0000004C, count: 6
Apr 30 23:43:38 debian kernel: [ 1003.669797] iwlwifi 0000:01:00.0: 0x00000034 | NMI_INTERRUPT_WDG           
Apr 30 23:43:38 debian kernel: [ 1003.669803] iwlwifi 0000:01:00.0: 0x00010564 | uPc
Apr 30 23:43:38 debian kernel: [ 1003.669810] iwlwifi 0000:01:00.0: 0x0001054E | branchlink1
Apr 30 23:43:38 debian kernel: [ 1003.669816] iwlwifi 0000:01:00.0: 0x00010580 | branchlink2
Apr 30 23:43:38 debian kernel: [ 1003.669824] iwlwifi 0000:01:00.0: 0x0000DBEA | interruptlink1
Apr 30 23:43:38 debian kernel: [ 1003.669831] iwlwifi 0000:01:00.0: 0x0001CB38 | interruptlink2
Apr 30 23:43:38 debian kernel: [ 1003.669837] iwlwifi 0000:01:00.0: 0x00000002 | data1
Apr 30 23:43:38 debian kernel: [ 1003.669844] iwlwifi 0000:01:00.0: 0x07030000 | data2
Apr 30 23:43:38 debian kernel: [ 1003.669851] iwlwifi 0000:01:00.0: 0x0002617C | line
Apr 30 23:43:38 debian kernel: [ 1003.669858] iwlwifi 0000:01:00.0: 0x11C0121E | beacon time
Apr 30 23:43:38 debian kernel: [ 1003.669865] iwlwifi 0000:01:00.0: 0x9B5B2DE2 | tsf low
Apr 30 23:43:38 debian kernel: [ 1003.669871] iwlwifi 0000:01:00.0: 0x00000055 | tsf hi
Apr 30 23:43:38 debian kernel: [ 1003.669876] iwlwifi 0000:01:00.0: 0x00000000 | time gp1
Apr 30 23:43:38 debian kernel: [ 1003.669882] iwlwifi 0000:01:00.0: 0x0070585B | time gp2
Apr 30 23:43:38 debian kernel: [ 1003.669889] iwlwifi 0000:01:00.0: 0x00000000 | time gp3
Apr 30 23:43:38 debian kernel: [ 1003.669896] iwlwifi 0000:01:00.0: 0x754312A8 | uCode version
Apr 30 23:43:38 debian kernel: [ 1003.669905] iwlwifi 0000:01:00.0: 0x000000B0 | hw version
Apr 30 23:43:38 debian kernel: [ 1003.669911] iwlwifi 0000:01:00.0: 0x00484B00 | board version
Apr 30 23:43:38 debian kernel: [ 1003.669918] iwlwifi 0000:01:00.0: 0x0207001C | hcmd
Apr 30 23:43:38 debian kernel: [ 1003.669924] iwlwifi 0000:01:00.0: 0xA7863002 | isr0
Apr 30 23:43:38 debian kernel: [ 1003.669930] iwlwifi 0000:01:00.0: 0x11898000 | isr1
Apr 30 23:43:38 debian kernel: [ 1003.669935] iwlwifi 0000:01:00.0: 0x00000E17 | isr2
Apr 30 23:43:38 debian kernel: [ 1003.669941] iwlwifi 0000:01:00.0: 0x8543FCC0 | isr3
Apr 30 23:43:38 debian kernel: [ 1003.669947] iwlwifi 0000:01:00.0: 0x00000000 | isr4
Apr 30 23:43:38 debian kernel: [ 1003.669954] iwlwifi 0000:01:00.0: 0x00804110 | isr_pref
Apr 30 23:43:38 debian kernel: [ 1003.669961] iwlwifi 0000:01:00.0: 0x0002617C | wait_event
Apr 30 23:43:38 debian kernel: [ 1003.669969] iwlwifi 0000:01:00.0: 0x000000B4 | l2p_control
Apr 30 23:43:38 debian kernel: [ 1003.669976] iwlwifi 0000:01:00.0: 0x000000A4 | l2p_duration
Apr 30 23:43:38 debian kernel: [ 1003.669983] iwlwifi 0000:01:00.0: 0x0000000F | l2p_mhvalid
Apr 30 23:43:38 debian kernel: [ 1003.669989] iwlwifi 0000:01:00.0: 0x001050C0 | l2p_addr_match
Apr 30 23:43:38 debian kernel: [ 1003.669996] iwlwifi 0000:01:00.0: 0x00000005 | lmpm_pmg_sel
Apr 30 23:43:38 debian kernel: [ 1003.670004] iwlwifi 0000:01:00.0: 0x13011136 | timestamp
Apr 30 23:43:38 debian kernel: [ 1003.670009] iwlwifi 0000:01:00.0: 0x0000A8C0 | flow_handler
Apr 30 23:43:38 debian kernel: [ 1003.670105] iwlwifi 0000:01:00.0: Start IWL Event Log Dump: display last 1 entries
Apr 30 23:43:38 debian kernel: [ 1003.670160] iwlwifi 0000:01:00.0: EVT_LOGT:0007362647:0x0000010c:0123
Apr 30 23:43:38 debian kernel: [ 1003.682688] ieee80211 phy0: Hardware restart was requested




Cheers,
Toni



-- System Information:
Debian Release: 9.4
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.15.0-0.bpo.2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

firmware-iwlwifi depends on no packages.

firmware-iwlwifi recommends no packages.

Versions of packages firmware-iwlwifi suggests:
ii  initramfs-tools  0.130

-- no debconf information
          


$ lspci         
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 1 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QS77 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C216 Chipset Family SMBus Controller (rev 04)
01:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24)

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#63408 — Bug#815037: Fixed upstream?

From	Paride Legovini <pl@ninthfloor.org>
Date	2019-02-19 10:30 +0100
Subject	Bug#815037: Fixed upstream?
Message-ID	<xt9SV-3g5-1@gated-at.bofh.it>
In reply to	#52881

According to:

https://bugs.launchpad.net/ubuntu/+bug/1808389

the latest iwlwifi firmware fixed this.

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#69811 — Bug#815037: marked as done ("Microcode SW error detected. Restarting ..." every few seconds)

From	"Debian Bug Tracking System" <owner@bugs.debian.org>
Date	2021-03-14 16:40 +0100
Subject	Bug#815037: marked as done ("Microcode SW error detected. Restarting ..." every few seconds)
Message-ID	<BSB0t-2NY-7@gated-at.bofh.it>
In reply to	#52881

[Multipart message — attachments visible in raw view] — view raw

Your message dated Sun, 14 Mar 2021 16:35:10 +0100
with message-id <YE4tLlpVfJR8CWTV@photino.stro.at>
and subject line Re:  "Microcode SW error detected. Restarting ..." every few seconds
has caused the Debian Bug report #815037,
regarding "Microcode SW error detected.  Restarting ..." every few seconds
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
815037: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815037
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

[toc] | [prev] | [standalone]

csiph-web

Bug#815037: "Microcode SW error detected. Restarting ..." every few seconds

Contents

#52881 — Bug#815037: "Microcode SW error detected. Restarting ..." every few seconds

#59443 — Bug#815037: firmware-iwlwifi: still present in version 20170823-1

#59713 — Bug#815037: firmware-iwlwifi: Bug also leads to kernel panic and freezes

#60790 — Bug#815037: problem still present in Stretch and stretch-backports?

#63408 — Bug#815037: Fixed upstream?

#69811 — Bug#815037: marked as done ("Microcode SW error detected. Restarting ..." every few seconds)