Open paulmenzel opened 4 years ago
hi @paulmenzel, seems like a lot of issues with the power estimation feature. we are currently looking into this issue.
@gkammela, were you able to look into this issue.
Using Debian sid/unstable with powertop 2.15-3 on the different system Dell XPS 13 9360, the probem is still there with an external monitor connected over DisplayPort to a Dell DA300 USB-C adapter, and the internal display being turned off:
The battery reports a discharge rate of 17.9 W
The energy consumed was 154 J
The estimated remaining time is 0 hours, 40 minutes
Summary: 583.2 wakeups/second, 0.0 GPU ops/seconds, 0.0 VFS ops/sec and 34.7% CPU use
Power est. Usage Events/s Category Description
1.38 W 0.0% Device Display backlight
813 mW 55.4% Device USB device: USB 10/100/1000 LAN (Realtek)
209 mW 8.9 pkts/s Device Network interface: enx18dbf22dccf3 (r8152)
On a Dell Latitude E7250 with Debian Sid/unstable with Linux 5.7.6 and PowerTOP 2.11, connecting a monitor over HDMI and disabling the internal screen in GNOME 3.36.4, PowerTOP estimates four Watts of power usage for the display backlight with a utilization of zero percent.
Shouldn’t that be 0? I looked a little into the backlight code, but there have been no changes since a while.