Currently having a strange (and very irritating issue) on my P50.
A week ago, the computer started to have incredibly high battery drain. At idle, the battery estimates were half of my usual battery life (5 hours compared to 10 hours). I followed up and confirmed that the battery drain rate was indeed double (13Whr instead of the usual 6-7Whr). This was with no change in usage, no driver updates, and no visible issues (<1% CPU usage, no disk usage, no network usage, iGPU).
I did a clean install and updated all drivers to their most recent from Lenovo site only. This issue still exists, but I have determined how to replicate it.
On restart, there is no issue with power usage. However, upon usage of any monitor (via DP, TB, or HDMI) and then unplugging that monitor, the battery usage doubles. This is after ensuring that device utilization is low and the GPU has switched off. The only way to return to the regular battery utilization is by restarting the computer.
Has anyone experienced this issue recently? My hunch is something related (like the PCIE bus) does not turn off or return to a low power state after usage. As I have to restart the system after using any external display, it is very annoying.
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