Setting "nouveau.modeset=-1" does not help here. My DELL XPS L502X is still running hot:
<pre> ~$ sudo service lm-sensors status ● lm-sensors.service - Initialize hardware monitoring sensors Loaded: loaded (/lib/systemd/system/lm-sensors.service; enabled; vendor preset: enabled) Active: active (exited) since Thu 2018-06-07 20:18:15 CEST; 27min ago Process: 991 ExecStart=/usr/bin/sensors (code=exited, status=0/SUCCESS) Process: 807 ExecStart=/usr/bin/sensors -s (code=exited, status=0/SUCCESS) Main PID: 991 (code=exited, status=0/SUCCESS) giu 07 20:18:15 xps sensors[991]: acpitz-virtual-0 giu 07 20:18:15 xps sensors[991]: Adapter: Virtual device giu 07 20:18:15 xps sensors[991]: temp1: +96.0°C (crit = +100.0°C) giu 07 20:18:15 xps sensors[991]: temp2: +96.0°C (crit = +100.0°C) giu 07 20:18:15 xps sensors[991]: coretemp-isa-0000 giu 07 20:18:15 xps sensors[991]: Adapter: ISA adapter giu 07 20:18:15 xps sensors[991]: Package id 0: +96.0°C (high = +86.0°C, crit = +100.0°C) giu 07 20:18:15 xps sensors[991]: Core 0: +96.0°C (high = +86.0°C, crit = +100.0°C) giu 07 20:18:15 xps sensors[991]: Core 1: +95.0°C (high = +86.0°C, crit = +100.0°C) giu 07 20:18:15 xps systemd[1]: Started Initialize hardware monitoring sensors. </pre> <pre> ~$ cat /proc/cmdline BOOT_IMAGE=/vmlinuz-4.15.0-22-lowlatency root=UUID=345b57d7-dea8-44de-a3c0-4614b87a4565 ro quiet splash video=VGA2:d nouveau.runpm=-1 vt.handoff=1 ~$ cat /proc/acpi/bbswitch 0000:01:00.0 ON ~$ sudo cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :DynPwr:0000:01:00.0 ~$ sudo lsmod | grep nouveau nouveau 1716224 1 mxm_wmi 16384 1 nouveau ttm 102400 1 nouveau wmi 24576 5 dell_wmi,wmi_bmof,dell_wmi_descriptor,mxm_wmi,nouveau i2c_algo_bit 16384 2 nouveau,i915 drm_kms_helper 167936 2 nouveau,i915 drm 397312 8 nouveau,i915,ttm,drm_kms_helper video 40960 4 dell_wmi,dell_laptop,nouveau,i915 </pre> -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-prime in Ubuntu. https://bugs.launchpad.net/bugs/1765363 Title: prime-select intel is not powering off the nvidia card Status in nvidia-prime package in Ubuntu: Confirmed Bug description: 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1765363/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
