Xorg cannot use nvidia, missing symlink

[a. Mennucc]

hi

I used the automated GUI tool to select the proprietary driver nvidia-367

but Xorg was not using the nvidia driver, claiming that

[ 11.041] (II) LoadModule: "nvidia"
[ 11.045] (WW) Warning, couldn't open module nvidia
[ 11.045] (II) UnloadModule: "nvidia"
[ 11.045] (II) Unloading nvidia
[ 11.045] (EE) Failed to load module "nvidia" (module does not exist, 0)

To solve the problem, I

# ln -s /usr/lib/nvidia-367/xorg/nvidia_drv.so /usr/lib/xorg/modules/drivers

now Xorg find the driver and it works fine.

BTW , I have had to apply this fix many times in the past.

a.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: nvidia-367 367.57-0ubuntu0.16.04.1
ProcVersionSignature: Ubuntu 4.8.0-36.36~16.04.1-generic 4.8.11
Uname: Linux 4.8.0-36-generic i686
NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: i386
Date: Fri Feb 17 10:05:42 2017
InstallationDate: Installed on 2014-08-20 (911 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130213)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: nvidia-graphics-drivers-367
UpgradeStatus: Upgraded to xenial on 2016-09-02 (167 days ago)
modified.conffile..etc.modprobe.d.nvidia-367_hybrid.conf: [deleted]

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[a. Mennucc (mennucc1)]

I analyzed the problem and found the culprit

Each time a window manager is (re)started, due to the conf file /etc/init/gpu-manager.conf , the program 'gpu-manager' is called. This program does not like my NVIDIA card, so it calls "update-alternatives" to force X11 to use mesa drivers and libs, even though NVIDIA drivers and libs are installed

TO "solve" the problem I moved away the culprit
# mv /usr/bin/gpu-manager /usr/bin/gpu-manager~~
and used
# update-alternatives --config i386-linux-gnu_egl_conf
# update-alternatives --config i386-linux-gnu_gl_conf
and then restarted .the system

Now it works as a charm, getting superb framerates in games etc etc.

Some more info

I have a card NVIDIA Corporation GK208 [GeForce GT 730]
I installed Ubuntu xenial
I am running kernel 4.8.0-41-generic
gpu-manager is part of ubuntu-drivers-common 1:0.4.17.2

I attach the log of gpu-manager

[a. Mennucc (mennucc1)]

let me add that the commands
# update-alternatives --auto i386-linux-gnu_egl_conf
# update-alternatives --auto i386-linux-gnu_gl_conf
are more straightforward, and that
# ldconfig
is needed afterwards

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[dino99 (9d9)]

Confirm the problem with a nv117 (gtx750) card, both with 365 & 367 drivers (package from graphics-drivers ppa works well)