[SOLVED] Persistent Ethernet failure with Ubuntu: PCL issue
I had a working distro of Kubuntu 9.04 on my fit-pc2 until last week, then I decided to make a clean install of (K)Ubuntu 9.10. Since then, I'm living a true nightmare as every distro I install (8.10, 9.04, 9.10, even 10.04) from a USB Key has huge networking issues (on Ethernet, didn't check the WLAN).
Here's a quick description of my problem:
* sometimes the network seems ok for a few minutes, then it becomes totally unresponsive (no ping to other computers, no http (wget, firefox, Konqueror, apt...)
* sometimes the network doesn't start at all since the boot.
* even when booted on the USB dongle, I can't sometimes reach the network
BUT it always gets the correct IP from the router (I recorded its MAC address on the router so it would always get a certain IP)
I know there are many problems involving Internet connections in Ubuntu but everything I tried from the literature was in vain (disabling ipv6, changing the MTU, trying DHCP with manual DNS entries, ...). No luck.
My last try (of maybe a dozen of them...) was with Kubuntu 9.04, following the instructions on the fit-pc2 wiki. Everything looked OK (even VLC with HDTV streaming) until I made
sudo apt-get upgrade
and rebooted. After that, no connexion, still the correct IP but no ping to to/from other computers on the network.
I also tried disabling Hyperthreading (though I don't think it could be the cause of the issue here) but nothing changed.
To be more precise it's linked to a 100MB/1GB ADSL Router (Optical Freebox v5 for the french guys here) via a Powerline Communications plug, and this router is the only "new" thing since my resintall frenzy.
Intermittent failures are the worst by far, and I'm beginning to feel really pessimistic about this one.
Do you see something else I could try or do I definitely blame it on faulty hardware