Public bug reported:
in 18.04, nvidia-prime's "intel" mode doesn't work. it's attempting to
disable the card at boot using the following command:
/bin/sh -c echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
however, that command doesn't work on 18.04, the whole vgaswitcheroo
subdirector is missing. is this a kernel feature that's been removed? or
something else? regardless, I don't see any way for prime to work
correctly with this error.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: nvidia-prime 0.8.8
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
Uname: Linux 4.15.0-23-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
Date: Tue Jun 12 03:48:33 2018
Dependencies:
InstallationDate: Installed on 2018-03-05 (98 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: nvidia-prime
UpgradeStatus: Upgraded to bionic on 2018-04-27 (45 days ago)
** Affects: nvidia-prime (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1776462
Title:
nvidia-prime fails in "intel" mode on 18.04
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