[opensuse-factory] Tumbleweed: Unstable Network Connection using IWLWIFI in Kernel 4.5.0-3-default

24 Apr 2016


      After the last kernel update, my wireless connection is very
unreliable because the iwlwifi driver is being reloaded due to an
error. The connection was just about unsuable. I ran journalctl and
saw this:

Apr 21 09:34:54 linux kernel: iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: Microcode SW error
detected.  Restarting 0x2000000.
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: CSR values:
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: (2nd byte of
CSR_INT_COALESCING is CSR_INT_PERIODIC_REG)
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_HW_IF_CONFIG_REG: 0X00489200
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_INT_COALESCING: 0X0000ff40
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
 CSR_INT: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_INT_MASK: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_FH_INT_STATUS: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_GPIO_IN: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_RESET: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_GP_CNTRL: 0X080403c5
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_HW_REV: 0X00000210
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_EEPROM_REG: 0Xd55555d5
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_EEPROM_GP: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_OTP_GP_REG: 0Xd55555d5
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_GIO_REG: 0X00000046
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_GP_UCODE_REG: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_GP_DRIVER_REG: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_UCODE_DRV_GP1: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_UCODE_DRV_GP2: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_LED_REG: 0X00000060
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_DRAM_INT_TBL_REG: 0X882537dd
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_GIO_CHICKEN_BITS: 0X27800200
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_ANA_PLL_CFG: 0Xd55555d5
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_MONITOR_STATUS_REG: 0Xc3b7f757
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_HW_REV_WA_REG: 0X0001001a
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
CSR_DBG_HPET_MEM_REG: 0Xffff0010
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: FH register values:
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_RSCSR_CHNL0_STTS_WPTR_REG: 0X24e39300
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_RSCSR_CHNL0_RBDCB_BASE_REG: 0X024e3950
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_RSCSR_CHNL0_WPTR: 0X000000a0
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_MEM_RCSR_CHNL0_CONFIG_REG: 0X80801114
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_MEM_RSSR_SHARED_CTRL_REG: 0X000000fc
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_MEM_RSSR_RX_STATUS_REG: 0X07030000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_TSSR_TX_STATUS_REG: 0X07ff0001
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0:
FH_TSSR_TX_ERROR_REG: 0X00000000
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: Start IWL Error Log Dump:
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: Status: 0x00000000, count: 6
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: Loaded firmware
version: 16.242414.0
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x0000100C |
ADVANCED_SYSASSERT
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00800620 | uPc
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000000 | branchlink1
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00042524 | branchlink2
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00042E68 | interruptlink1
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00780000 | interruptlink2
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x24021002 | data1
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000004 | data2
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0xDEADBEEF | data3
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x61005FBD | beacon time
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x06F03044 | tsf low
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000000 | tsf hi
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000000 | time gp1
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x37DF246D | time gp2
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000000 | time gp3
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000010 | uCode
version major
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x0003B2EE | uCode
version minor
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000210 | hw version
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00489200 | board version
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x108A001C | hcmd
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0xA6D23002 | isr0
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x01418000 | isr1
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x0000011A | isr2
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x004230C6 | isr3
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000000 | isr4
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000110 | isr_pref
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000000 | wait_event
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000094 | l2p_control
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x0001CC10 | l2p_duration
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x0000000F | l2p_mhvalid
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000081 | l2p_addr_match
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x00000005 | lmpm_pmg_sel
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x17111915 | timestamp
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: 0x0000A0B0 | flow_handler
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
Apr 21 11:02:07 linux kernel: iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: Direct firmware
load for iwlwifi-7265D-20.ucode failed with error -2
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: Direct firmware
load for iwlwifi-7265D-19.ucode failed with error -2
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: Direct firmware
load for iwlwifi-7265D-18.ucode failed with error -2
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: Direct firmware
load for iwlwifi-7265D-17.ucode failed with error -2
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: Unsupported splx structure
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: loaded firmware
version 16.242414.0 op_mode iwlmvm
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: Detected Intel(R)
Dual Band Wireless AC 7265, REV=0x210
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0: L1 Enabled - LTR Enabled
Apr 21 11:09:58 linux kernel: iwlwifi 0000:01:00.0 wlp1s0: renamed from wlan0

Apparenty, the iwlwifi driver is requesting iwlwifi-7265D-20.ucode,
but it does not exist in the Tumbleweed repositories, nor is it in any
other repositories. I was able to download it from
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/linux-firmware.git.
Once I did that, the errors disapeared and my wireless is solid.
--
Edward Reiss 
Quis custodiet ipsos custodes?
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Edward Reiss

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