Cannot Get Back Ethernet Connection
john.moniz-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org
john.moniz-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org
Fri Jan 27 19:45:32 UTC 2012
I now wish I had some kind of VM to go back and forth between distros. This computer has been rebooted more in the last few days than most of it's life.
That worked somewhat... I was able to connect to the network but not the internet. Below is netstat output.
Thanks again.
Date: Fri, 27 Jan 2012 13:14:45 -0500
From: ted.leslie-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org
To: tlug-lxSQFCZeNF4 at public.gmane.org
Subject: Re: [TLUG]: Cannot Get Back Ethernet Connection
try to manual set networking, i.e.
ifconfig eth0 <ip addy>
route add default gw <ip addy of your gateway>
assuming you are on eth0, else change accordingly.
on that note,
what are your
netstat -rn
and
ifconfig -a
outputs?
-tl
----------------------------------------------------------------------------------------------------------------
netstat -rn was initially blank. After doing the above commands, it retrieved:
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
On 01/27/2012 01:04 PM, john.moniz-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org wrote:
Date: Fri, 27 Jan 2012 12:19:00 -0500
From: ted.leslie-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org
To: tlug-lxSQFCZeNF4 at public.gmane.org
CC: john.moniz-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org
Subject: Re: [TLUG]: Cannot Get Back Ethernet Connection
did you add a pci card or reset or change your bios in mobo at
the time this occurred.
looking at other entries for other HW in lspci -vv may show
other differences.
There is PCI irq mapping at play and the fedora vs. ubuntu
kernel are working it differently (i am guessing).
of course if you change pci settings in your bios (i.e. no
plug and play,and other pci/irq related settings) you risk
nuking your windows
(i know, as its happened to me once years ago).
you should also look at dmesg of boot time (time frame).
Maybe just update your ubuntu kernel? or pass in some boot
string to manipulate APCH settings.
But why it started to happen in the first place? i am guessing
because of a add/remove pci card or bios change/update?
-tl
I haven't added a pci card nor changed bios settings.
Tracing back my steps, its hard to pinpoint the last thing I
did before it stopped working, reason being that I had the
system (ubuntu) in sleep mode and the changes I made may not
have affected it until I rebooted. I have in fact been making
some network changes and the problem appeared a few days after
making my changes when the system was rebooted. In fact I
rebooted only because the system shut down one day when I
tried waking it up. At that boot and every reboot afterward,
there was no connection.
What I did was to change the router from my coyote pc to a
commercial box so that I could do dhcp. I bought a blu-ray
disk player that I could not connect to the internet on static
ip, so changed systems. Meanwhile, I kept this one box as
static ip. The dhcp was only for the BD player. And I made
sure that the dhcp numbering was kept quite apart from the
static ip numbers I use.
I got everything working OK, including the ubuntu system I was
running. Then, after the system shut down instead of awakening
and I could not connect, I started fiddling with dhcp ip's,
ended up with ip conflicts and made a mess of it. But I'm
fairly certain this mess happened *after* I lost connection in
the first place. And I did get fedora and vista connected, so
I was able to fix what I messed up. Except I can't fix ubuntu.
I had also installed mediatomb, which I have since removed.
That's the history of it in a nutshell.
I can't update the ubuntu kernel very easily because I have no
internet when I'm on ubuntu. I'm not a computer whiz, so
upgrading the kernel without using the package system is not
something I have the skills to do. If there are no clues on
what to do to fix it, I may have to re-install ubuntu. Or
maybe try something else.
Thanks,
John.
On 01/27/2012 12:07 PM, john.moniz-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org
wrote:
> From: ted.leslie-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org
> Date: Fri, 27 Jan 2012 10:23:52 -0500
> Subject: Re: [TLUG]: Cannot Get Back Ethernet
Connection
> To: tlug-lxSQFCZeNF4 at public.gmane.org
>
> lspci -vv
> i mean.
>
> -tl
Here's what came out - all I get out of it is that the
irq's are different for ubuntu and fedora.
UBUNTU:
-------------
"dmesg eth":
<snip>
[ 0.815136] forcedeth: Reverse Engineered nForce
ethernet driver. Version 0.64.
[ 0.815419] forcedeth 0000:00:07.0: PCI INT A ->
Link[APCH] -> GSI 23 (level, low) -> IRQ 23
[ 0.815424] forcedeth 0000:00:07.0: setting latency
timer to 64
[ 1.336900] forcedeth 0000:00:07.0: ifname eth0, PHY
OUI 0x732 @ 13, addr 00:1f:c6:04:ec:f0
[ 1.336903] forcedeth 0000:00:07.0: highdma pwrctl
mgmt lnktim msi desc-v3
[ 2270.703264] forcedeth 0000:00:07.0: irq 25 for
MSI/MSI-X
[ 2281.216026] eth0: no IPv6 routers present
"lspci -vv":
<snip>
00:07.0 Bridge: nVidia Corporation MCP61 Ethernet (rev
a2)
Subsystem: Hewlett-Packard Company Device 2a66
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 (250ns min, 5000ns max)
Interrupt: pin A routed to IRQ 23
Region 0: Memory at fe02d000 (32-bit,
non-prefetchable) [size=4K]
Region 1: I/O ports at ec00 [size=8]
Capabilities: <access denied>
Kernel driver in use: forcedeth
Kernel modules: forcedeth
FEDORA:
-------------
"dmesg eth":
<snip>
forcedeth: Reverse Engineered nForce ethernet driver.
Version 0.64.
forcedeth 0000:00:07.0: PCI INT A -> Link[APCH] ->
GSI 22 (level, low) -> IRQ 22
forcedeth 0000:00:07.0: setting latency timer to 64
forcedeth 0000:00:07.0: ifname eth0, PHY OUI 0x732 @ 13,
addr 00:1f:c6:04:ec:f0
forcedeth 0000:00:07.0: highdma pwrctl mgmt lnktim msi
desc-v3
forcedeth 0000:00:07.0: irq 25 for MSI/MSI-X
eth0: no IPv6 routers present
"lspci -vv":
<snip>
00:07.0 Bridge: nVidia Corporation MCP61 Ethernet (rev
a2)
Subsystem: Hewlett-Packard Company Device 2a66
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 (250ns min, 5000ns max)
Interrupt: pin A routed to IRQ 25
Region 0: Memory at fe02d000 (32-bit,
non-prefetchable) [size=4K]
Region 1: I/O ports at ec00 [size=8]
Capabilities: <access denied>
Kernel driver in use: forcedeth
Kernel modules: forcedeth
I find it odd that eth0 in fedora ended up with irq 25
rather than 22 (from the 2nd line of fedora dmesg), yet
in ubuntu eth0 got irq 23 (from the 2nd line of ubuntu
dmesg) rather than 25.
Is there a clue somewhere in the above?
Thanks,
John.
>
> On Fri, Jan 27, 2012 at 10:13 AM, ted leslie <ted.leslie-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>
wrote:
> > Compare lspci -xx on the two linux os.
> > -tl
> >
> > On Jan 27, 2012 10:08 AM, <john.moniz-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org>
wrote:
> >>
> >> Hello everyone;
> >>
> >> After many years of trouble free ethernet
connections, I have now lost it
> >> (in more ways than one) and cannot get an
IP address on my Ubuntu set up.
> >> The condensed version of this story is
that it won't connect, regardless of
> >> whether I try DHCP or static IP address.
Ubuntu just won't give me an IP
> >> address.
> >>
> >> On this same box, I also have Vista and
Fedora. I am able to connect with
> >> either, both with DHCP and static address
configurations.
> >>
> >> Here's a comparison of "dmesg | grep eth"
for both Fedora and Ubuntu.
> >>
> >> Fedora:
> >> <snip>
> >> forcedeth 0000:00:07.0: irq 25 for
MSI/MSI-X
> >> eth0: no IPv6 routers present
> >>
> >> Ubuntu:
> >> <snip>
> >> [ 480.187616] forcedeth 0000:00:07.0: irq
25 for MSI/MSI-X
> >> [ 490.348024] eth0: no[ 480.187616]
forcedeth 0000:00:07.0: irq 25 for
> >> MSI/MSI-X
> >> [ 490.348024] eth0: no IPv6 routers
present
> >> [ 611.855532] forcedeth 0000:00:07.0: irq
25 for MSI/MSI-X
> >> [ 622.492015] eth0: no IPv6 routers
present
> >>
> >> I don't like what I see from Ubuntu and I
have a feeling that it's not
> >> good. However, feelings don't fix things
and I don't know where to go to fix
> >> it. I've been at this for days...
> >>
> >> Any help would be appreciated. And I can
expand the story if necessary,
> >> just thought I'd zero in on the above
first.
> >>
> >> Thanks,
> >>
> >> John.
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