Screen flickering only when on battery skylake 16.04

Support & Help Requests
#21

Good point. How much does tlp extend battery life?

Because tlp appears to cause multiple problems, especially for newer hardware, should it even be installed on Ubuntu by default?

This is definitely something that, were I a new user without means for recourse, would send me distribution hopping. We’ve got this nearly perfect, stable, time-tested platform and the battery-saver is (at least for the moment) breaking it in multiple ways.

Problems I have traced back to tlp:

  • Intermittent - very annoying - screen flicker.
  • Every system sound produces a loud crackle or pop.
  • (suspected) Freeze on suspend.
  • (suspected) Hang on shutdown.
  • (suspected) Freeze of keyboard and mouse.
  • Inconsistent state after suspend/resume, intermittent.

Every problem I have had since I installed 16.04 appears to be caused by tlp. Just wow. Maybe you are right. Perhaps it would be best for people to remove it entirely.

I do hope someone who knows more about this can look into it and get a fix out fairly soon - I want what tlp promises. :smile_cat:

3 Likes
#22

Thanks man, just deleted TLP and the problem seems gone.

1 Like
#23

I have problems like this on my new Lenovo Thinkpad T460 and these are indeed serious issues. I have briefly read through this thread but I am not sure if a solution to this has been found and what to do about it.

Shortly after the login screen appears the screen flickers very obviously one or two times and when on battery I notice intermittent screen flicker of the kind you have described. It does not happen very frequently but frequent enough to make serious writing tasks on this machine impossible. I also noticed vertical blurry stripes covering the entire screen that appear randomly and usually stay there for about five minutes until they disappear. The crackling start-up sound I can also confirm.

Will UM 16.04 receive kernel updates beyond the 4.4 one that originally came with the LTS release?
#24

Upgrade your operating system to 18.04.