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[Bug 1487214] Re: Intel AC 7260 unstable WiFi: Microcode SW error detected

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1487214@xxxxxxxxxxxxxxxxxx>
Date: Tue, 27 Oct 2015 04:17:32 -0000
Reply-to: Bug 1487214 <1487214@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1487214

Title:
  Intel AC 7260 unstable WiFi: Microcode SW error detected

Status in linux package in Ubuntu:
  Expired

Bug description:
  The WiFi connectivity with the Intel AC 7260 is very unstable.
  When the connectivity is lost, the only solution appear to be to restart the network-manager via: 

  sudo service network-manager restart

  Below you can find additional information.

  Ubuntu 15.04
  linux-firmware: 1.143.3

  dmesg | grep iwl:
  [    2.600428] iwlwifi 0000:06:00.0: loaded firmware version 25.17.12.0 op_mode iwlmvm
  [    2.645054] iwlwifi 0000:06:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144

  kern.log:
  [ 4324.645405] ieee80211 phy0: Hardware restart was requested
  [ 4324.761175] iwlwifi 0000:06:00.0: L1 Disabled - LTR Disabled
  [ 4324.761329] iwlwifi 0000:06:00.0: L1 Disabled - LTR Disabled
  [ 4478.866610] iwlwifi 0000:06:00.0: Microcode SW error detected.  Restarting 0x2000000.
  [ 4478.866614] iwlwifi 0000:06:00.0: CSR values:
  [ 4478.866616] iwlwifi 0000:06:00.0: (2nd byte of CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
  [ 4478.866620] iwlwifi 0000:06:00.0:        CSR_HW_IF_CONFIG_REG: 0X40489204
  [ 4478.866623] iwlwifi 0000:06:00.0:          CSR_INT_COALESCING: 0X8000ff40
  [ 4478.866627] iwlwifi 0000:06:00.0:                     CSR_INT: 0X00000000
  [ 4478.866631] iwlwifi 0000:06:00.0:                CSR_INT_MASK: 0X00000000
  [ 4478.866634] iwlwifi 0000:06:00.0:           CSR_FH_INT_STATUS: 0X00000000
  [ 4478.866638] iwlwifi 0000:06:00.0:                 CSR_GPIO_IN: 0X00000000
  [ 4478.866641] iwlwifi 0000:06:00.0:                   CSR_RESET: 0X00000000
  [ 4478.866645] iwlwifi 0000:06:00.0:                CSR_GP_CNTRL: 0X080403cd
  [ 4478.866649] iwlwifi 0000:06:00.0:                  CSR_HW_REV: 0X00000144
  [ 4478.866652] iwlwifi 0000:06:00.0:              CSR_EEPROM_REG: 0X00000000
  [ 4478.866656] iwlwifi 0000:06:00.0:               CSR_EEPROM_GP: 0X80000000
  [ 4478.866659] iwlwifi 0000:06:00.0:              CSR_OTP_GP_REG: 0X803a0000
  [ 4478.866663] iwlwifi 0000:06:00.0:                 CSR_GIO_REG: 0X00080044
  [ 4478.866667] iwlwifi 0000:06:00.0:            CSR_GP_UCODE_REG: 0X00000000
  [ 4478.866670] iwlwifi 0000:06:00.0:           CSR_GP_DRIVER_REG: 0X00000000
  [ 4478.866674] iwlwifi 0000:06:00.0:           CSR_UCODE_DRV_GP1: 0X00000000
  [ 4478.866677] iwlwifi 0000:06:00.0:           CSR_UCODE_DRV_GP2: 0X00000000
  [ 4478.866681] iwlwifi 0000:06:00.0:                 CSR_LED_REG: 0X00000060
  [ 4478.866685] iwlwifi 0000:06:00.0:        CSR_DRAM_INT_TBL_REG: 0X8841b127
  [ 4478.866688] iwlwifi 0000:06:00.0:        CSR_GIO_CHICKEN_BITS: 0X27800200
  [ 4478.866692] iwlwifi 0000:06:00.0:             CSR_ANA_PLL_CFG: 0Xd55555d5
  [ 4478.866695] iwlwifi 0000:06:00.0:      CSR_MONITOR_STATUS_REG: 0X3d0801bd
  [ 4478.866699] iwlwifi 0000:06:00.0:           CSR_HW_REV_WA_REG: 0X0001001a
  [ 4478.866702] iwlwifi 0000:06:00.0:        CSR_DBG_HPET_MEM_REG: 0Xffff0010
  [ 4478.866704] iwlwifi 0000:06:00.0: FH register values:
  [ 4478.866708] iwlwifi 0000:06:00.0:         FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X41d25b00
  [ 4478.866712] iwlwifi 0000:06:00.0:        FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X0419ebf0
  [ 4478.866716] iwlwifi 0000:06:00.0:                  FH_RSCSR_CHNL0_WPTR: 0X00000088
  [ 4478.866720] iwlwifi 0000:06:00.0:         FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
  [ 4478.866723] iwlwifi 0000:06:00.0:          FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
  [ 4478.866727] iwlwifi 0000:06:00.0:            FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
  [ 4478.866731] iwlwifi 0000:06:00.0:    FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
  [ 4478.866735] iwlwifi 0000:06:00.0:                FH_TSSR_TX_STATUS_REG: 0X07ff0001
  [ 4478.866739] iwlwifi 0000:06:00.0:                 FH_TSSR_TX_ERROR_REG: 0X00000000
  [ 4478.866837] iwlwifi 0000:06:00.0: Start IWL Error Log Dump:
  [ 4478.866839] iwlwifi 0000:06:00.0: Status: 0x00000000, count: 6
  [ 4478.866840] iwlwifi 0000:06:00.0: Loaded firmware version: 25.17.12.0
  [ 4478.866842] iwlwifi 0000:06:00.0: 0x00002078 | ADVANCED_SYSASSERT          
  [ 4478.866843] iwlwifi 0000:06:00.0: 0x00000222 | uPc
  [ 4478.866844] iwlwifi 0000:06:00.0: 0x00000000 | branchlink1
  [ 4478.866846] iwlwifi 0000:06:00.0: 0x00000B34 | branchlink2
  [ 4478.866847] iwlwifi 0000:06:00.0: 0x000165BC | interruptlink1
  [ 4478.866848] iwlwifi 0000:06:00.0: 0x00525153 | interruptlink2
  [ 4478.866849] iwlwifi 0000:06:00.0: 0x00000000 | data1
  [ 4478.866851] iwlwifi 0000:06:00.0: 0x00008904 | data2
  [ 4478.866852] iwlwifi 0000:06:00.0: 0xDEADBEEF | data3
  [ 4478.866853] iwlwifi 0000:06:00.0: 0x92803CB6 | beacon time
  [ 4478.866854] iwlwifi 0000:06:00.0: 0x40E9D34D | tsf low
  [ 4478.866855] iwlwifi 0000:06:00.0: 0x00000070 | tsf hi
  [ 4478.866857] iwlwifi 0000:06:00.0: 0x00000000 | time gp1
  [ 4478.866858] iwlwifi 0000:06:00.0: 0x092D7A70 | time gp2
  [ 4478.866859] iwlwifi 0000:06:00.0: 0x00000000 | time gp3
  [ 4478.866860] iwlwifi 0000:06:00.0: 0x00041911 | uCode version
  [ 4478.866861] iwlwifi 0000:06:00.0: 0x00000144 | hw version
  [ 4478.866863] iwlwifi 0000:06:00.0: 0x40489204 | board version
  [ 4478.866864] iwlwifi 0000:06:00.0: 0x0965004E | hcmd
  [ 4478.866865] iwlwifi 0000:06:00.0: 0x26222082 | isr0
  [ 4478.866866] iwlwifi 0000:06:00.0: 0x00000000 | isr1
  [ 4478.866867] iwlwifi 0000:06:00.0: 0x00000002 | isr2
  [ 4478.866868] iwlwifi 0000:06:00.0: 0x00400080 | isr3
  [ 4478.866870] iwlwifi 0000:06:00.0: 0x00000000 | isr4
  [ 4478.866871] iwlwifi 0000:06:00.0: 0x11000112 | isr_pref
  [ 4478.866872] iwlwifi 0000:06:00.0: 0x00000000 | wait_event
  [ 4478.866873] iwlwifi 0000:06:00.0: 0x00004188 | l2p_control
  [ 4478.866874] iwlwifi 0000:06:00.0: 0x00019430 | l2p_duration
  [ 4478.866876] iwlwifi 0000:06:00.0: 0x000003BF | l2p_mhvalid
  [ 4478.866877] iwlwifi 0000:06:00.0: 0x00000014 | l2p_addr_match
  [ 4478.866878] iwlwifi 0000:06:00.0: 0x00000005 | lmpm_pmg_sel
  [ 4478.866879] iwlwifi 0000:06:00.0: 0x13041303 | timestamp
  [ 4478.866880] iwlwifi 0000:06:00.0: 0x00008898 | flow_handler

  lspci -vvvv:
  06:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73)
  	Subsystem: Intel Corporation Dual Band Wireless-AC 7260
  	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
  	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
  	Latency: 0, Cache Line Size: 64 bytes
  	Interrupt: pin A routed to IRQ 30
  	Region 0: Memory at f7800000 (64-bit, non-prefetchable) [size=8K]
  	Capabilities: [c8] Power Management version 3
  		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
  		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
  	Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
  		Address: 00000000fee0100c  Data: 4162
  	Capabilities: [40] Express (v2) Endpoint, MSI 00
  		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 unlimited
  			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
  		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
  			RlxdOrd- ExtTag- PhantFunc- AuxPwr+ NoSnoop+ FLReset-
  			MaxPayload 128 bytes, MaxReadReq 128 bytes
  		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
  		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <4us, L1 <32us
  			ClockPM+ Surprise- LLActRep- BwNot-
  		LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
  			ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
  		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
  		DevCap2: Completion Timeout: Range B, TimeoutDis+, LTR+, OBFF Via WAKE#
  		DevCtl2: Completion Timeout: 16ms to 55ms, TimeoutDis-, LTR-, OBFF Disabled
  		LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-
  			 Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
  			 Compliance De-emphasis: -6dB
  		LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
  			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
  	Capabilities: [100 v1] Advanced Error Reporting
  		UESta:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
  		UEMsk:	DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
  		UESvrt:	DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
  		CESta:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
  		CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
  		AERCap:	First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
  	Capabilities: [140 v1] Device Serial Number ac-7b-a1-ff-ff-24-66-d9
  	Capabilities: [14c v1] Latency Tolerance Reporting
  		Max snoop latency: 71680ns
  		Max no snoop latency: 71680ns
  	Capabilities: [154 v1] Vendor Specific Information: ID=cafe Rev=1 Len=014 <?>
  	Kernel driver in use: iwlwifi

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References

[Bug 1487214] [NEW] Intel AC 7260 unstable WiFi: Microcode SW error detected
From: Simone Bordet, 2015-08-20