So I built a new computer a couple months ago and installed Windows 7 and Ubuntu 10.04 on it. It has a Gigabyte motherboard which has a Realtek 8111d onboard network card.
In Windows, networking works fine. If I switch to Ubuntu, I have no network connectivity whatsoever, and in order to boot Windows, I have to leave my computer off for a minute or two in order for networking to work after having Ubuntu running.
Since Ubuntu by default installs the r8169 driver for my network card, I've tried installing the r8168 driver, since that's supposedly the correct driver for my card. It hasn't helped.
I installed 10.10 today (a fresh install), hoping that'd fix the problem. It didn't, so I checked lsmod, which showed the r8169 driver installed again. So I try installing the r8168 driver (according to these instructions) and it installs without any problems. I shut off my computer and unplug it, then go do some homework for 10 or 15 minutes. I come back, hoping the combination of the new driver and being powered off for a while have fixed it. Alas, no luck.
I would post the outputs of various commands, but because of the above issues, it's rather difficult. However, if they're absolutely necessary, I can do so.
So, any help that could be provided would be great.