I can confirm that this problem was not fixed in kernel 4.8-rc8, neither in 4.9 series.
The situation that made I think it was "fixed" is actually caused by USB cable quality issue. As I was testing the kernel 4.8-rc8, the inner 4 fibers for USB 3.0 is actually broken, forcing the adapter communicate with host under USB 2.0 mode. Once I reweld all fibers, I can see it appears along with "Linux Foundation 3.0 root hub", and the problem returns. And I re-test the old ISOs: 14.10 and 15.04 work properly, 15.10 fails. So apparently some regressions occur between 3.19 and 4.2 series. There is, however, a workaround: when inserting the USB plug, leave a part of the plug outside the jack. This will keep the 4 contacts for USB 3.0 disconnected from PC, while 4 other contacts for USB 2.0 unaffected. But I still hope this could be solved from code level. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1622322 Title: Realtek 8153-based ethernet adapter doesn't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622322/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
