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Thread: Ethernet Stopped !!

  1. #1
    Join Date
    Apr 2009
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    Surrey, London
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    Ubuntu

    Ethernet Stopped !!

    Hi all i have installed ubuntu 11.04 64bit on my dads computer and all was working fine. then i get a call saying "the internet is not working (lol)" i have a quick look at ubuntu tried the basics such as:
    - restart
    -assign a static IP
    -restart networking (sudo /etc/init.d/networking restart)
    - restarted the Cisco switch and even the cisco router

    i am 100% sure the cause is not the network equipment as other devices still work fine !

    can anyone help?
    Ubuntu 11.04+ Server Installs - Linux User 52879)
    http://www.elliotbeken.co.uk and http://elliotbeken.com

  2. #2
    Join Date
    May 2011
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    67

    Re: Ethernet Stopped !!

    can you send somehow, folowing
    listings from other 64 bit computer:
    Code:
    lspci -knn
    ifconfig -a
    route -n
    and the long one
    Code:
    dmesg
    for example using transfer over usb flash ,save as txt files,
    then copy txt files, and open them on this one

  3. #3
    Join Date
    Apr 2009
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    Ubuntu

    Re: Ethernet Stopped !!

    Thanks for the reply i have got the files and it seems that ubuntu is not getting the address from the DHCP server but every other devices on the network can get a new IP (if i really have to i will restart the DHCP server)

    the files are also here http://elliotbeken.com/ubuntu/

    dmesg file is too large to upload
    Attached Files Attached Files
    Ubuntu 11.04+ Server Installs - Linux User 52879)
    http://www.elliotbeken.co.uk and http://elliotbeken.com

  4. #4
    Join Date
    May 2011
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    Re: Ethernet Stopped !!

    yeah it looks fine inside logs,
    on the first look

    perhaps it is related to userspace ,like to dhcp client ,or network manager ?
    i have nothing conclusive for now

  5. #5
    Join Date
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    Ubuntu

    Re: Ethernet Stopped !!

    Thanks for trying

    i will have to try to do something with the dhcp but it is still weird as it dont work with a static address :S
    Ubuntu 11.04+ Server Installs - Linux User 52879)
    http://www.elliotbeken.co.uk and http://elliotbeken.com

  6. #6
    Join Date
    May 2011
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    Re: Ethernet Stopped !!

    except...

    you are missing lines in dmesg, similar to this one that is saying
    'ethernet link is up '
    ?

    Code:
      173.396661] r8169 0000:04:00.0: eth0: link up
    (from other thread)

    or perhaps forcedeth driver does not show this in logs ?

  7. #7
    Join Date
    May 2011
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    67

    Re: Ethernet Stopped !!

    can you also send listing of

    Code:
    cat /proc/interrupts
    and

    Code:
    ls /sys/module/forcedeth/parameters
    cat /sys/module/forcedeth/parameters/msi
    cat /sys/module/forcedeth/parameters/msix
    there is a module parameter that disables or enables MSI interups for this adapter

    it may be worth to try in /etc/modprobe.d ?


    Code:
    modinfo forcedeth
    parm: max_interrupt_work:forcedeth maximum events handled per interrupt (int)
    parm: optimization_mode:In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer. (int)
    parm: poll_interval:Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535. (int)
    parm: msi:MSI interrupts are enabled by setting to 1 and disabled by setting to 0. (int)
    parm: msix:MSIX interrupts are enabled by setting to 1 and disabled by setting to 0. (int)

    parm: dma_64bit:High DMA is enabled by setting to 1 and disabled by setting to 0. (int)
    parm: phy_cross: Phy crossover detection for Realtek 8201 phy is enabled by setting to 1 and disabled by setting to 0. (int)

    note:do not disable MSI system wide , beaucose radeon driver depends on it

    [ 14.674204] radeon 0000:01:00.0: irq 44 for MSI/MSI-X
    [ 14.674210] radeon 0000:01:00.0: radeon: using MSI.
    Last edited by novinick; May 25th, 2011 at 11:24 PM.

  8. #8
    Join Date
    May 2011
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    67

    Re: Ethernet Stopped !!

    may be also usefull , this info from 'ethtool'

    Code:
    ethtool eth0
    (when you can)

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