I confirm this problem on Dell XPS with a RTL8168B/8111B card in 64-bit Natty Narwhal (11.04). After some network activity (e.g. copying a large file), it will lock up the machine with only a flashing CAPS lock light and no other activity requiring a hard reset by pressing and holding the power button. The kernel is loading the r8169 driver. Strangely, this was not an issue running 10.10 on the same machine. Doing a vanilla reinstall did nothing to resolve this issue. Tehre were no BIOS settings that could be changed on my system.
I also confirm that it is solved by installing the Realtek r8168 proprietary driver from the Realtek website (and then running sudo dpkg- reconfigure linux-image-`uname -r`). Hope this helps someone else. This really was a pain to diagnose. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/573259 Title: Ubuntu 10.04 makes RTL8111/8168B network card unusable until cold reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/573259/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
