Public bug reported:
Right now, it seems that prime-select intel makes sure the nvidia driver is not
loaded, as nvidia-settings reports.
But my power consumption is > 20W.
cat /proc/acpi/bbswitch reports the card is still on.
If bbswitch and powertop are reliable, then the nvidia card is still powered.
This is a thinkpad w520 in Optimus mode.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: nvidia-prime 0.8.7
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 19 19:56:21 2018
Dependencies:
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-12-14 (125 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
PackageArchitecture: all
SourcePackage: nvidia-prime
UpgradeStatus: Upgraded to bionic on 2018-03-09 (41 days ago)
** Affects: nvidia-prime (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1765363
Title:
prime-select intel is not powering off the nvidia card
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