Comment 40 for bug 1758243

Hi!

I thought NVIDIA On-demand would be enabled with the next version of
xserver. Wouldn't it?

Marcos Alano
Linux System Administrator
<email address hidden>

On Thu, Oct 17, 2019, 06:41 Mathieu Reho <email address hidden> wrote:

> @Rocko
>
> Hello,
> Thank you for your help. Unfortunately your solution isn't working for me.
> I enabled the "NVIDIA On-Demand" parameter from nvidia-settings, then
> restarted my computer and exported all the env variables. I tried to launch
> a game, CS:GO for example, and when I type "mat_info" to see on which
> graphic chip it started, it tells me "Intel Graphics 630".
> It is starting on my Nvidia chip only if I force it in "PRIME Profiles"
> from nvidia-settings panel.
> Maybe if I make an "Application Profile" for all the programs that need
> graphic ressources I can get around the problem..
>
> I run on a Dell XPS 15 7590, with Ubuntu 19.10 installed and kernel
> 5.3.0-18-generic.
> The installed Nvidia driver is 435.21-0ubuntu2.
>
> If someone have a suggestion, please let me know :)
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1758243
>
> Title:
> bumblebee needs configuration changes to work with nvidia-driver-390
> and libglvnd0
>
> Status in bumblebee package in Ubuntu:
> Confirmed
>
> Bug description:
> bumblebee fails to work in Ubuntu 18.04 with nvidia-driver-390 unless
> these configuration changes are made:
>
> 1. For optirun to work, /etc/bumblebee/bumblebee.conf needs two
> library paths changed (because of the changes for GLVND):
>
> [driver-nvidia]
> LibraryPath=/usr/lib/x86_64-linux-gnu:/usr/lib/i386-linux-gnu
>
> XorgModulePath=/usr/lib/x86_64-linux-gnu/nvidia/xorg,/usr/lib/xorg/modules,/usr/lib/xorg/modules/input
>
> With these changes, optirun works correctly on my laptop (using the
> primus bridge) but primusrun still fails.
>
> 2. For power management to work (ie turning the nvidia card off whilst
> not in use), the nouveau and nvidia modules need blacklisting so they
> don't load on boot, and nvidia_drm and nvidia_modeset need aliasing to
> off so they never load. Otherwise, nvidia_drm attaches to
> drm_kms_helper and then bumblebee can't unload the nvidia module and
> turn off the card. This configuration file in /etc/modprobe.d/nvidia-
> bl.conf works for me:
>
> blacklist nouveau
> blacklist nvidia
> blacklist nvidia_drm
> blacklist nvidia_modeset
> alias nouveau off
> alias nvidia_drm off
> alias nvidia_modeset off
>
> (The first two lines are already in bumblebee.conf. I found I also had
> to alias nouveau to off because gdm?/mutter? so desperately wants to
> load it.)
>
> Update: aliasing nouveau to off doesn't stop the nvidia-fallback
> service from loading the nouveau module, so if nouveau is still
> loading, you could try running this command:
>
> systemctl disable nvidia-fallback.service
>
> You'll need to reboot because nouveau is already loaded, but the
> change should be permanent unless something else re-enables the
> nvidia-fallback service.
>
> Finally, to run mesa applications, you need to set this variable:
>
> export __GLVND_DISALLOW_PATCHING=1
>
>
> ProblemType: Bug
> DistroRelease: Ubuntu 18.04
> Package: bumblebee 3.2.1-17
> Uname: Linux 4.16.0-041600rc6-generic x86_64
> ApportVersion: 2.20.8-0ubuntu10
> Architecture: amd64
> CurrentDesktop: ubuntu:GNOME
> Date: Fri Mar 23 12:18:02 2018
> InstallationDate: Installed on 2017-08-16 (218 days ago)
> InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
> SourcePackage: bumblebee
> UpgradeStatus: Upgraded to bionic on 2017-11-17 (125 days ago)
> modified.conffile..etc.bumblebee.xorg.conf.nouveau: [modified]
> modified.conffile..etc.bumblebee.xorg.conf.nvidia: [modified]
> mtime.conffile..etc.bumblebee.bumblebee.conf: 2018-03-23T12:17:54.683287
> mtime.conffile..etc.bumblebee.xorg.conf.nouveau:
> 2018-03-22T14:01:52.732698
> mtime.conffile..etc.bumblebee.xorg.conf.nvidia:
> 2018-03-22T14:57:34.141995
>
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