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Thread: delete and re-add network connection

  1. #11
    Join Date
    Jun 2008
    Beans
    147

    Re: delete and re-add network connection

    Thanks very much for the assistance.

    I have set the IPV6 setting to "ignore" from within the network manager gui, so I'm assuming that this is now disabled.
    I have changed the MTU as suggested.
    Both of these suggestions made no difference.

    My original NIC (onboard) is as follows (output from lspci | grep Ethernet):
    00:0a.0 Ethernet controller: NVIDIA Corporation MCP77 Ethernet (rev a2)


    My second NIC (PCI card) has now been removed, but it is a 3Com chip on the card so I'm assuming that it uses a different driver to the onboard NIC.


    I have installed and run mii-tool, but get an error as follows:
    SIOCGMIIPHY on 'eth0' failed: Operation not supported


    Additional information from ethtool:
    Settings for eth0:
    Supported ports: [ MII ]
    Supported link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    1000baseT/Full
    Supported pause frame use: No
    Supports auto-negotiation: Yes
    Advertised link modes: 10baseT/Half 10baseT/Full
    100baseT/Half 100baseT/Full
    1000baseT/Full
    Advertised pause frame use: No
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: MII
    PHYAD: 3
    Transceiver: external
    Auto-negotiation: on
    Supports Wake-on: g
    Wake-on: g
    Link detected: yes


    So I don't know why I can't change the speed / duplex of the NIC using mii-tool.

    Really stumped now

  2. #12
    Join Date
    Mar 2010
    Location
    India
    Beans
    7,384
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: delete and re-add network connection

    Quote Originally Posted by stevebond001 View Post
    SIOCGMIIPHY on 'eth0' failed: Operation not supported
    So I don't know why I can't change the speed / duplex of the NIC using mii-tool.
    From man mii-tool :
    SIOCGMIIPHY on 'eth?' failed: Operation not supported
    The interface in question does not support MII queries. Most
    likely, it does not have MII transceivers, at all.
    Just for reference, ethtool eth0 output for my Atheros AR8151 chip (disconnected), which does support mii queries :
    Code:
    Settings for eth0:
    	Supported ports: [ TP ]
    	Supported link modes:   10baseT/Half 10baseT/Full 
    	                        100baseT/Half 100baseT/Full 
    	                        1000baseT/Full 
    	Supported pause frame use: No
    	Supports auto-negotiation: Yes
    	Advertised link modes:  Not reported
    	Advertised pause frame use: No
    	Advertised auto-negotiation: Yes
    	Speed: Unknown!
    	Duplex: Unknown! (255)
    	Port: Twisted Pair
    	PHYAD: 0
    	Transceiver: internal
    	Auto-negotiation: on
    	MDI-X: Unknown
    	Supports Wake-on: pg
    	Wake-on: g
    	Current message level: 0x0000003f (63)
    			       drv probe link timer ifdown ifup
    	Link detected: no
    So there are some differences than yours, although not sure if they matter.
    Basically, I'm stumped too..
    Varun
    Help others by marking threads as [SOLVED], if they are. (See how)
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  3. #13
    Join Date
    Jun 2008
    Beans
    147

    Re: delete and re-add network connection

    I've also tried the same process with OpenSUSE as well. Same result.

    I'm not sure of the forum rules - Now I know (or think I know) it's something to do with the guts of the network connection, can I create another thread with the correct title and specific problem? I know that it's sort of a repeat of this thread, but maybe someone will see the (amended) thread title and respond. But I don't want to break any rules on posting.

  4. #14
    Join Date
    Mar 2010
    Location
    India
    Beans
    7,384
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: delete and re-add network connection

    Quote Originally Posted by stevebond001 View Post
    I've also tried the same process with OpenSUSE as well. Same result.

    I'm not sure of the forum rules - Now I know (or think I know) it's something to do with the guts of the network connection, can I create another thread with the correct title and specific problem? I know that it's sort of a repeat of this thread, but maybe someone will see the (amended) thread title and respond. But I don't want to break any rules on posting.
    Rules are meant to enhance the help people can get here. They are not so rigid. If you think the question deserves a different thread, go ahead. I'd suggest to post a link to this thread (in fact one of these last posts to be more precise) with one or two lines of justification why you needed a different thread. I'm sure anyone interested enough will understand.

    Sorry I couldn't be of more help on this, and hope you will be able to get answers from someone more experienced with these issues.

    Good luck!
    Varun
    Help others by marking threads as [SOLVED], if they are. (See how)
    Wireless Script | Use Code Tags

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