Results 1 to 7 of 7

Thread: Wifi connexion drops often with broadcom chipset

  1. #1
    Join Date
    Feb 2006
    Location
    Valencia
    Beans
    58

    Question Wifi connexion drops often with broadcom chipset

    Hi,

    I have a HP Tx2625 tablet pc, and I'm using ubuntu intrepid.
    The wifi chipset is Broadcom BCM4322, and I'm not using the restricted driver.

    When I am connected to internet through wifi, connection drops often (this morning it drops 3 times in 15 min), which is quite annoying. It reconnects automatically after 15s.
    I googled about the error message but I haven't found anything, so may be here somebody can help me.
    I'm not far from the wifi router (connexion level is almost 100%), and with another laptop under intrepid connexion never drops (both laptops are in the same desk).

    Here is the dmesg output after connection drops:

    Code:
    [   87.448979] CPU0 attaching NULL sched-domain.
    [   87.448995] CPU1 attaching NULL sched-domain.
    [   87.452585] CPU0 attaching sched-domain:
    [   87.452591]  domain 0: span 0-1 level MC
    [   87.452594]   groups: 0 1
    [   87.452600]   domain 1: span 0-1 level CPU
    [   87.452602]    groups: 0-1
    [   87.452607] CPU1 attaching sched-domain:
    [   87.452609]  domain 0: span 0-1 level MC
    [   87.452612]   groups: 1 0
    [   87.452615]   domain 1: span 0-1 level CPU
    [   87.452617]    groups: 0-1
    [  154.201994] eth1: Michael MIC verification failed for MSDU from 00:1e:4c:b8:e2:5d keyidx=0
    [  154.202037] key[0] alg=TKIP key_set=1 tx_pn=00000000019a rx_pn=000000000173 replays=0 icv_errors=0 local_mic_failures=1
    [  154.202042] : TKIP stats from module: Ucast
    [  154.277325] eth1: Michael MIC verification failed for MSDU from 00:1e:4c:b8:e2:5d keyidx=0
    [  154.277365] key[0] alg=TKIP key_set=1 tx_pn=00000000019e rx_pn=00000000017c replays=0 icv_errors=0 local_mic_failures=2
    [  154.277369] : TKIP stats from module: Ucast
    Lsusb output:

    Code:
    Bus 007 Device 003: ID 056a:0093 Wacom Co., Ltd 
    Bus 007 Device 002: ID 08ff:1600 AuthenTec, Inc. AES1600
    Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 006 Device 002: ID 04f2:b103 Chicony Electronics Co., Ltd 
    Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 005 Device 002: ID 03f0:171d Hewlett-Packard Wireless (Bluetooth + WLAN) Interface [Integrated Module]
    Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 002: ID 0bda:0158 Realtek Semiconductor Corp. Mass Stroage Device
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Lspci output:
    Code:
    00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
    00:01.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (int gfx)
    00:04.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 0)
    00:05.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 1)
    00:06.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2)
    00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [AHCI mode]
    00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
    00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
    00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
    00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
    00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
    00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
    00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3a)
    00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller
    00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
    00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller
    00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
    00:14.5 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI2 Controller
    00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 11h HyperTransport Configuration (rev 40)
    00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 11h Address Map
    00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 11h DRAM Controller
    00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 11h Miscellaneous Control
    00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 11h Link Control
    01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics]
    08:00.0 Network controller: Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller (rev 01)
    09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
    Thanks for your help !

  2. #2
    Join Date
    Feb 2006
    Location
    Valencia
    Beans
    58

    Re: Wifi connexion drops often with broadcom chipset

    anybody knows ?

  3. #3
    Join Date
    Aug 2006
    Beans
    21
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Re: Wifi connexion drops often with broadcom chipset

    i don't think that this N chipset is being developed via linux wireless. Also Broadcom is really slow w/ the linux support.
    I'm thinking of removing this chip from my laptop until development picks up

  4. #4
    Join Date
    Aug 2006
    Beans
    21
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Re: Wifi connexion drops often with broadcom chipset

    i don't think that this N chipset is being developed via linux wireless. Also Broadcom is really slow w/ the linux support.
    I'm thinking of removing this chip from my laptop until development picks up.

  5. #5
    Join Date
    Feb 2006
    Location
    Valencia
    Beans
    58

    Re: Wifi connexion drops often with broadcom chipset

    I'm posting again because I'm using now ubuntu karmic and I still have these problems. I'm using the Broadcom 802.11 Linux STA wireless driver for use with Broadcom's BCM4311-, BCM4312-, BCM4321-, andBCM4322-based hardware provided by ubuntu.

    Nobody knows ?

  6. #6
    Join Date
    Apr 2009
    Beans
    2,601

    Re: Wifi connexion drops often with broadcom chipset

    You might try looking into this

    http://ubuntuforums.org/showthread.p...hlight=BCM4318

    Apparently a lot of people are having success

  7. #7
    Join Date
    Apr 2006
    Location
    Edinburgh, Scotland
    Beans
    11
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Wifi connexion drops often with broadcom chipset

    I had a similar problem, but the connection was only dropped when I was using battery power (it worked fine when connected to the mains). It turns out that the problem was with power management - try running
    Code:
    sudo iwconfig eth1 power off
    when you're running on batter power. Iwconfig should now show that power management is off:
    Code:
    $ sudo iwconfig
    lo        no wireless extensions.
    
    eth0      no wireless extensions.
    
    wwan0     no wireless extensions.
    
    eth1      IEEE 802.11abgn  ESSID:"O2wireless633324"  
              Mode:Managed  Frequency:2.462 GHz  Access Point: 00:26:44:49:62:67   
              Bit Rate=54 Mb/s   Tx-Power:24 dBm   
              Retry min limit:7   RTS thr:off   Fragment thr:off
              Encryption key:off
              Power Management:off
              Link Quality=5/5  Signal level=-49 dBm  Noise level=-94 dBm
              Rx invalid nwid:0  Rx invalid crypt:7  Rx invalid frag:0
              Tx excessive retries:768  Invalid misc:0   Missed beacon:0
    Check out this thread for info on how to make a script that will turn off power management automatically every time you go to batter power: http://ubuntuforums.org/showthread.php?t=1597874

    Cheers,
    Scott

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •