[xorcist]

The T- and X-series is what people usually refer to as the "real" Thinkpads, which existed before this Lenovo nonsense. Lenovo labels widely varying hardware under the Thinkpad brand, but that's not what you want as a Linux user.

I don't know about the E-series specifically, sorry.

[ayushnix]

As I wrote before, I have observed similar issues reported by many T series owners when I was desperately scouring the Internet for a fix for months. Of course, I haven't used a T series ThinkPad so I can't say if these issues got resolved or not. I gave up long ago and now keep my laptop on 24x7 when I'm not traveling.