2 Replies Latest reply on May 1, 2015 10:02 PM by summerborn

    Dual Band Wireless-AC 7265 reaches only 300mbps under Linux

    summerborn

      Hello,

      uname -a

      Linux NUK01 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

       

      sudo lspci -vmmk -s 02:00

      Slot:    02:00.0

      Class:    Network controller

      Vendor:    Intel Corporation

      Device:    Wireless 7265

      SVendor:    Intel Corporation

      SDevice:    Dual Band Wireless-AC 7265

      Rev:    59

      Driver:    iwlwifi

       

      summerborn@NUK01:~$ sudo lspci -vvvkn -s 02:00

      02:00.0 0280: 8086:095a (rev 59)

          Subsystem: 8086:9010

          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 52

          Region 0: Memory at f7100000 (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: 00000000fee00458  Data: 0000

          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 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 34-13-e8-ff-ff-20-e8-9c

          Capabilities: [14c v1] Latency Tolerance Reporting

              Max snoop latency: 3145728ns

              Max no snoop latency: 3145728ns

          Capabilities: [154 v1] L1 PM Substates

              L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+

                    PortCommonModeRestoreTime=30us PortTPowerOnTime=60us

          Kernel driver in use: iwlwifi

       

       

      iwconfig wlan0

      wlan0     IEEE 802.11abgn  ESSID:"XXXXXX"

                Mode:Managed  Frequency:5.18 GHz  Access Point: 04:DA:D2:AA:B6:4F 

                Bit Rate=300 Mb/s   Tx-Power=18 dBm 

                Retry short limit:7   RTS thr:off   Fragment thr:off

                Power Management:on

                Link Quality=70/70  Signal level=-36 dBm

                Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0

                Tx excessive retries:0  Invalid misc:377   Missed beacon:0

       

      May  1 13:59:53 NUK01 kernel: [ 7.551523] Intel(R) Wireless WiFi driver for Linux, in-tree:
      May  1 13:59:53 NUK01 kernel: [ 7.552431] iwlwifi 0000:02:00.0: Unsupported splx structure
      May  1 13:59:53 NUK01 kernel: [ 7.558885] iwlwifi 0000:02:00.0: loaded firmware version 25.15.12.0 op_mode iwlmvm
      May  1 13:59:53 NUK01 kernel: [ 7.594350] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x210
      May  1 13:59:53 NUK01 kernel: [ 7.595882] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled
      May  1 13:59:53 NUK01 kernel: [ 7.596194] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled

      May  1 13:59:53 NUK01 NetworkManager[817]: <info> rfkill1: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.3/0000:02:00.0/ieee80211/phy0/rfkill1) (driver iwlwifi)

      May  1 13:59:53 NUK01 NetworkManager[817]: <info> Loaded device plugin: /usr/lib/x86_64-linux-gnu/NetworkManager/libnm-device-plugin-wifi.so

      May  1 13:59:53 NUK01 NetworkManager[817]: <info> WiFi enabled by radio killswitch; enabled by state file

      May  1 13:59:53 NUK01 NetworkManager[817]: <info> (wlan0): using nl80211 for WiFi device control

      May  1 13:59:53 NUK01 NetworkManager[817]: <info> (wlan0): new 802.11 WiFi device (driver: 'iwlwifi' ifindex: 3)

      May  1 13:59:53 NUK01 kernel: [   11.797647] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled

      May  1 13:59:53 NUK01 kernel: [   11.797806] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled

      May  1 14:00:03 NUK01 NetworkManager[817]: <info> WiFi hardware radio set enabled

      May  1 18:44:24 NUK01 kernel: [17071.586237] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled

      May  1 18:44:24 NUK01 kernel: [17071.586442] iwlwifi 0000:02:00.0: L1 Disabled - LTR Enabled

       

       

       

      The ap:

      Cisco IOS Software, C3600 Software (AP3G2-K9W8-M), Version 15.3(3)JA3, RELEASE SOFTWARE (fc1)

      Technical Support: http://www.cisco.com/techsupport

      Copyright (c) 1986-2015 by Cisco Systems, Inc.

      Compiled Thu 19-Feb-15 10:21 by prod_rel_team

       

      ROM: Bootstrap program is C3600 boot loader

      BOOTLDR: C3600 Boot Loader (AP3G2-BOOT-M) LoaderVersion 12.4(23)JY, RELEASE SOFTWARE (fc1)

       

      hor-ror-ap-1 uptime is 12 hours, 12 minutes

      System returned to ROM by power-on

      System image file is "flash:/ap3g2-k9w8-mx.153-3.JA3/ap3g2-k9w8-xx.153-3.JA3"

      Last reload reason:

       

       

       

      This product contains cryptographic features and is subject to United

      States and local country laws governing import, export, transfer and

      use. Delivery of Cisco cryptographic products does not imply

      third-party authority to import, export, distribute or use encryption.

      Importers, exporters, distributors and users are responsible for

      compliance with U.S. and local country laws. By using this product you

      agree to comply with applicable laws and regulations. If you are unable

      to comply with U.S. and local laws, return this product immediately.

       

      A summary of U.S. laws governing Cisco cryptographic products may be found at:

      http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

       

      If you require further assistance please contact us by sending email to

      export@cisco.com.

       

      cisco AIR-CAP3602E-E-K9 (PowerPC) processor (revision A0) with 188394K/60928K bytes of memory.

      Processor board ID FCZ1709J263

      PowerPC CPU at 800Mhz, revision number 0x2151

      Last reset from power-on

      LWAPP image version 8.0.115.0

      1 Gigabit Ethernet interface

      2 802.11 Radios

       

      32K bytes of flash-simulated non-volatile configuration memory.

      Base ethernet MAC Address: 44:03:A7:01:BB:58

      Part Number                          : 73-14521-02

      PCA Assembly Number                  : 800-37501-02

      PCA Revision Number                  : A0

      PCB Serial Number                    : FOC16516ZGX

      Top Assembly Part Number             : 800-35874-02

      Top Assembly Serial Number           : FCZ1709J263

      Top Revision Number                  : C0

      Product/Model Number                 : AIR-CAP3602E-E-K9  

       

       

       

      Configuration register is 0xF

       

       

      The controller:

        Num Of Supported Power Levels ............. 6

            Tx Power Level 1 .......................... 18 dBm

            Tx Power Level 2 .......................... 15 dBm

            Tx Power Level 3 .......................... 12 dBm

            Tx Power Level 4 .......................... 9 dBm

            Tx Power Level 5 .......................... 6 dBm

            Tx Power Level 6 .......................... 3 dBm

            Tx Power Configuration .................... AUTOMATIC

            Current Tx Power Level .................... 1

            Tx Power Assigned By ...................... DTPC

       

          Phy OFDM parameters

            Configuration ............................. AUTOMATIC

            Current Channel ........................... 36

            Channel Assigned By ....................... DCA

            Extension Channel ......................... ABOVE

            Channel Width.............................. 40 Mhz

            Allowed Channel List....................... 36,40,44,48,52,56,60,64,100,

              ......................................... 104,108,112,116,132,136,140

            TI Threshold .............................. -50

            DCA Channel List........................... Global

       

      --More-- or (q)uit

            Legacy Tx Beamforming Configuration ....... CUSTOMIZED

            Legacy Tx Beamforming ..................... ENABLED

            Antenna Type............................... EXTERNAL_ANTENNA

            External Antenna Gain (in .5 dBi units).... 0

            Diversity.................................. DIVERSITY_ENABLED

            802.11n Antennas

               A....................................... ENABLED

               B....................................... ENABLED

               C....................................... ENABLED

               D....................................... ENABLED

       

          Performance Profile Parameters

            Configuration ............................. AUTOMATIC

            Interference threshold..................... 10 %

            Noise threshold............................  -70 dBm

            RF utilization threshold................... 80 %

            Data-rate threshold........................ 1000000 bps

            Client threshold........................... 12 clients

            Coverage SNR threshold..................... 16 dB

            Coverage exception level................... 25 %

            Client minimum exception level............. 3 clients

          Rogue Containment Information

          Containment Count............................ 0

       

       

      I have a mcbook that connects on 450mbps (broadcam chip)

       

      So question is, is this a problem ,or this Intel wifi card supports up to 300mbps or it is Linux limitation?