On 10/16/17 11:13, Glen B wrote:
Does anyone think this deserves a bug report
or am I misunderstanding something here?Yes. Do the bug report, so that somebody, somewhere, sometime might develop a test for the problem, run the test, and fix the problem in future systemd, X.org, Debian, whatever releases.
I also have a laptop, redirect the video to an external monitor, and close the lid. I believe it has the same problem as you have reported. But, when I SSH in from another machine to run top, the problem goes away. So, I'll have to write a cron job that runs top once a minute and dumps the output to a timestamped file if I want more information.
However, one CPU in my laptop goes to 100% whenever I lock the screen. That I could see via SSH and top:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878313
David