Ubuntu
linux-firmware package

Microcode SW error detected.

Bug #1405842 reported by Laurent Bonnaud
26
This bug affects 5 people
Affects Status Importance Assigned to Milestone
linux-firmware (Ubuntu)
Fix Released
Medium
Unassigned

Bug Description

I just saw this error in the kernel log:

[171056.176336] iwlwifi 0000:02:00.0: Microcode SW error detected. Restarting 0x2000000.
[171056.176341] iwlwifi 0000:02:00.0: CSR values:
[171056.176343] iwlwifi 0000:02:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
[171056.176359] iwlwifi 0000:02:00.0: CSR_HW_IF_CONFIG_REG: 0X40489204
[171056.176373] iwlwifi 0000:02:00.0: CSR_INT_COALESCING: 0X80000040
[171056.176387] iwlwifi 0000:02:00.0: CSR_INT: 0X00000000
[171056.176401] iwlwifi 0000:02:00.0: CSR_INT_MASK: 0X00000000
[171056.176414] iwlwifi 0000:02:00.0: CSR_FH_INT_STATUS: 0X00000000
[171056.176428] iwlwifi 0000:02:00.0: CSR_GPIO_IN: 0X00000000
[171056.176442] iwlwifi 0000:02:00.0: CSR_RESET: 0X00000000
[171056.176456] iwlwifi 0000:02:00.0: CSR_GP_CNTRL: 0X080403c5
[171056.176470] iwlwifi 0000:02:00.0: CSR_HW_REV: 0X00000144
[171056.176484] iwlwifi 0000:02:00.0: CSR_EEPROM_REG: 0X00000000
[171056.176498] iwlwifi 0000:02:00.0: CSR_EEPROM_GP: 0X80000000
[171056.176512] iwlwifi 0000:02:00.0: CSR_OTP_GP_REG: 0X803a0000
[171056.176526] iwlwifi 0000:02:00.0: CSR_GIO_REG: 0X00080042
[171056.176540] iwlwifi 0000:02:00.0: CSR_GP_UCODE_REG: 0X00000000
[171056.176554] iwlwifi 0000:02:00.0: CSR_GP_DRIVER_REG: 0X00000000
[171056.176568] iwlwifi 0000:02:00.0: CSR_UCODE_DRV_GP1: 0X00000000
[171056.176582] iwlwifi 0000:02:00.0: CSR_UCODE_DRV_GP2: 0X00000000
[171056.176596] iwlwifi 0000:02:00.0: CSR_LED_REG: 0X00000060
[171056.176610] iwlwifi 0000:02:00.0: CSR_DRAM_INT_TBL_REG: 0X8821dad1
[171056.176624] iwlwifi 0000:02:00.0: CSR_GIO_CHICKEN_BITS: 0X27800200
[171056.176638] iwlwifi 0000:02:00.0: CSR_ANA_PLL_CFG: 0Xd55555d5
[171056.176652] iwlwifi 0000:02:00.0: CSR_MONITOR_STATUS_REG: 0X3c08019d
[171056.176666] iwlwifi 0000:02:00.0: CSR_HW_REV_WA_REG: 0X0001001a
[171056.176680] iwlwifi 0000:02:00.0: CSR_DBG_HPET_MEM_REG: 0Xffff0010
[171056.176682] iwlwifi 0000:02:00.0: FH register values:
[171056.176707] iwlwifi 0000:02:00.0: FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X0c483900
[171056.176723] iwlwifi 0000:02:00.0: FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X00c48380
[171056.176739] iwlwifi 0000:02:00.0: FH_RSCSR_CHNL0_WPTR: 0X00000050
[171056.176755] iwlwifi 0000:02:00.0: FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X00801114
[171056.176771] iwlwifi 0000:02:00.0: FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
[171056.176786] iwlwifi 0000:02:00.0: FH_MEM_RSSR_RX_STATUS_REG: 0X02030000
[171056.176802] iwlwifi 0000:02:00.0: FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
[171056.176817] iwlwifi 0000:02:00.0: FH_TSSR_TX_STATUS_REG: 0X07ff0001
[171056.176833] iwlwifi 0000:02:00.0: FH_TSSR_TX_ERROR_REG: 0X00000000
[171056.176975] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[171056.176977] iwlwifi 0000:02:00.0: Status: 0x00000000, count: 6
[171056.176978] iwlwifi 0000:02:00.0: Loaded firmware version: 25.228.9.0
[171056.176980] iwlwifi 0000:02:00.0: 0x00000034 | NMI_INTERRUPT_WDG
[171056.176982] iwlwifi 0000:02:00.0: 0x000000E3 | uPc
[171056.176984] iwlwifi 0000:02:00.0: 0x00000000 | branchlink1
[171056.176985] iwlwifi 0000:02:00.0: 0x00000BA4 | branchlink2
[171056.176987] iwlwifi 0000:02:00.0: 0x0001626C | interruptlink1
[171056.176988] iwlwifi 0000:02:00.0: 0x00029676 | interruptlink2
[171056.176990] iwlwifi 0000:02:00.0: 0x00000000 | data1
[171056.176991] iwlwifi 0000:02:00.0: 0x00000002 | data2
[171056.176992] iwlwifi 0000:02:00.0: 0x02039842 | data3
[171056.176994] iwlwifi 0000:02:00.0: 0xDE803F2A | beacon time
[171056.176996] iwlwifi 0000:02:00.0: 0x8DBC10F8 | tsf low
[171056.176997] iwlwifi 0000:02:00.0: 0x00000001 | tsf hi
[171056.176998] iwlwifi 0000:02:00.0: 0x00000000 | time gp1
[171056.177000] iwlwifi 0000:02:00.0: 0x0BE49F4E | time gp2
[171056.177001] iwlwifi 0000:02:00.0: 0x00000000 | time gp3
[171056.177003] iwlwifi 0000:02:00.0: 0x000419E4 | uCode version
[171056.177004] iwlwifi 0000:02:00.0: 0x00000144 | hw version
[171056.177006] iwlwifi 0000:02:00.0: 0x40489204 | board version
[171056.177007] iwlwifi 0000:02:00.0: 0x1041001C | hcmd
[171056.177009] iwlwifi 0000:02:00.0: 0x26F63002 | isr0
[171056.177010] iwlwifi 0000:02:00.0: 0x11806000 | isr1
[171056.177012] iwlwifi 0000:02:00.0: 0x0000001A | isr2
[171056.177013] iwlwifi 0000:02:00.0: 0x40417CC2 | isr3
[171056.177015] iwlwifi 0000:02:00.0: 0x00000000 | isr4
[171056.177016] iwlwifi 0000:02:00.0: 0x10804112 | isr_pref
[171056.177018] iwlwifi 0000:02:00.0: 0x00000000 | wait_event
[171056.177020] iwlwifi 0000:02:00.0: 0x00004288 | l2p_control
[171056.177021] iwlwifi 0000:02:00.0: 0x00009C22 | l2p_duration
[171056.177023] iwlwifi 0000:02:00.0: 0x000003BF | l2p_mhvalid
[171056.177024] iwlwifi 0000:02:00.0: 0x000000EF | l2p_addr_match
[171056.177026] iwlwifi 0000:02:00.0: 0x00000017 | lmpm_pmg_sel
[171056.177027] iwlwifi 0000:02:00.0: 0x20111734 | timestamp
[171056.177029] iwlwifi 0000:02:00.0: 0x19605058 | flow_handler
[171056.177032] ieee80211 phy0: Hardware restart was requested
[171056.297652] iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled
[171056.298033] iwlwifi 0000:02:00.0: L1 Enabled - LTR Disabled

This is with this kernel version:

ii linux-image-3.18.0-031800-generic 3.18.0-031800.201412071935 amd64 Linux kernel image for version 3.18.0 on 64 bit x86 SMP

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-firmware 1.138.1
Uname: Linux 3.18.0-031800-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: KDE
Date: Fri Dec 26 20:39:07 2014
Dependencies:

EcryptfsInUse: Yes
PackageArchitecture: all
SourcePackage: linux-firmware
UpgradeStatus: No upgrade log present (probably fresh install)

Revision history for this message
Laurent Bonnaud (laurent-bonnaud) wrote :
Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

Did this issue start happening after an update/upgrade? Was there a kernel version where you were not having this particular problem? This will help determine if the problem you are seeing is the result of a regression, and when this regression was introduced. If this is a regression, we can perform a kernel bisect to identify the commit that introduced the problem.

Changed in linux-firmware (Ubuntu):
importance: Undecided → Medium
status: New → Incomplete
Revision history for this message
Laurent Bonnaud (laurent-bonnaud) wrote :

> Did this issue start happening after an update/upgrade?

No idea. I only saw this problem once and I cannot reproduce it. Therefore I do not know if it occurs rarely or if it occurs with specific kernel+FW versions.

Revision history for this message
Benjamin Xiao (ben-r-xiao) wrote :

I am on Ubuntu 15.04 and this error pops up very frequently. Each time it happens a crash report dialog pops up talking about NMI_INTERRUPT_WDG with the iwlwifi driver.

Laurent Bonnaud (laurent-bonnaud)
Changed in linux-firmware (Ubuntu):
status: Incomplete → Confirmed
Revision history for this message
Rodrigo Azevedo (rodrigoams) wrote :

I am on Ubuntu 14.10 and I see this error every time. I just sent many "crash reports" about that.
kernel 3.16.0-30-generic

[ 12.449818] iwlwifi 0000:08:00.0: irq 62 for MSI/MSI-X
[ 12.961430] iwlwifi 0000:08:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm
[ 12.972905] iwlwifi 0000:08:00.0: Detected Intel(R) Wireless N 7260, REV=0x144
[ 12.972969] iwlwifi 0000:08:00.0: L1 Enabled - LTR Enabled
[ 12.973200] iwlwifi 0000:08:00.0: L1 Enabled - LTR Enabled
[ 20.244107] iwlwifi 0000:08:00.0: L1 Enabled - LTR Enabled
[ 20.244658] iwlwifi 0000:08:00.0: L1 Enabled - LTR Enabled
[ 456.638342] iwlwifi 0000:08:00.0: Microcode SW error detected. Restarting 0x2000000.
[ 456.638353] iwlwifi 0000:08:00.0: CSR values:
[ 456.638357] iwlwifi 0000:08:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
etc

Revision history for this message
Rodrigo Azevedo (rodrigoams) wrote :

Maybe this is a solution

https://communities.intel.com/thread/59595
http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/commit/?id=a876c69f042cf4732755b325d3b709125bb51a06

but i don't know how to confirm.

Revision history for this message
Ruud Koot (ruudkoot) wrote :

It seems a recent Ubuntu update has overwritten my /etc/modprobe.d/iwlwifi.conf re-enabling 11n.

Setting disable_11n=1 made this problem go away again.

Revision history for this message
Laurent Bonnaud (laurent-bonnaud) wrote :

I am closing this bug because it seems to have been fixed in more recent microcode versions.

Changed in linux-firmware (Ubuntu):
status: Confirmed → Fix Released
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