I've tried around a bit and found out that now, the problem occurred also in 16.04. Not sure if I just didn't try enough before or if the problems really wasn't there in 16.04 two months ago.
However, I've got the problem solved now. I updated the BIOS and the firmware using Lenovo system update from Windows and now, the problem is gone. So far, this works only for PCs with Windows but as recently published, Lenovo plans to provide native support for Linux for more and more Laptops. Maybe, the E480 will be supported too soon. Thanks for the support! ** Changed in: linux (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1787782 Title: Hanging keys on Thinkpad To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1787782/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs