On Sat, 27 Feb 2021 at 17:59, Doug H. <fedoraproject....@wombatz.com> wrote:
> On Sat, Feb 27, 2021, at 1:36 PM, Cameron Simpson wrote: > > On 27Feb2021 09:50, Doug H. <fedoraproject....@wombatz.com> wrote: > > >I am having an odd problem with my ethernet port. I assume this came > > >with a dnf update but that was some weeks ago so I can't help figure > > >out what update might have done it. When first discovered I think I > > >found that booting from an older kernel did not fix it. I assume that > > >the physical interface is not the problem since a physical "bounce" > > >always fixes it and it shows no other problems. To explain that... > > [...] > > >The simple fix is to physically unplug and replug the cable. When it is > > >not working (each reboot) there are not lights on. The physical > > >"bounce" lights up the LEDs and it comes right up. > > > > > >So, I am asking for something to add to rc.local that does the same > > >thing. > > > > Have you tried something as simple as: > > > > ifconfig enp5s0 down > > sleep 2 > > ifconfig enp5s0 up > > > Yup, I should have noted the various stuff I have tried. A couple of times > now I have rebooted to create the issue and then pounded on the interface > with no luck. I then just unclip/pull/push the cord and it comes up like > magic. > Have you inspected the jack (uses a magnifier in good light) and tried a different cable? Once corrosion starts connections can go bad but will start to work after a replug cycle. You can buy contact enhancer that can often help in such cases. > > After posting this I installed an old PCI ether card to get around the > issue. The only trouble there is that the card does not seem to support > "Wake on LAN" which is annoying but I think I can live with that. > > Another note that I should have included is that this *is* a very old box. > It will be 12 years old sometime this year (October I think). And this is > the onboard LAN, so maybe it *is* something physical. It just seems odd > that it works without issue once it is "bounced" to the working state. > > At my work we once had a PC whose networking seemed fine until we needed PCNFS, which refused to work. The vendor's diagnostics didn't indicate any problem, but when I pulled the card there were obvious burned components. Your time might be better spent getting a modern replacement, but I realize there are use cases where a modern replacement can be difficult. -- George N. White III
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