Hello guys. I have been having this issue for a few days in my HP EliteBook 6930p. I am using the latest BIOS (F.20).
What's the issue?
In Windows, Arch and BIOS the CPU goes to over 90% when idle if the computer is charging (this obviously slows everything to a crawl). Then I disconnect it and magically drops to well under 50%, and performance increases.
When did this start?
The problem appeared while I was compiling some software in Arch Linux. Everything got slow and has been happening ever since.
What did I try?
- Updating the BIOS and rebooting.
- Disconnecting the computer, removing the battery and holding the power button for 30s.
- Restoring BIOS to default settings.
- Sometimes in Windows there is a process called "System Idle Process" that can use up to 80% of CPU. Various other "lightweight" tasks like taskmgr can get unusually high CPU usage (above 50%). Again, this only happens in AC.
- Windows is up to date.
(I leave this empty just in case some info is requested later I'll add it here)
Has anyone experienced this? Any pointers on where to start troubleshooting? Thanks everyone!
Edited by SupermanPrime, 12 May 2018 - 01:08 PM.