Does kernel-4.16 + nvidia-396.24 work or not?

Support
1

Hello,

All updates to OMV LX 3.03 till July, 17, 2018.

Sorry for long posts! Looking for help and answers.

I’ve reported problems to have bbswitch and nvidia working with kernel-4.16 at

https://forum3.openmandriva.org/t/old-problem-is-back-nvidia-and-bbswitch-are-gone/1862

New nvidia 396.24 was said to work fine with kernel 4.16 at

https://forum3.openmandriva.org/t/nvidia-drivers/1890/11

However, I had problems to build nvidia 396.24 with kernel 4.16 in my desktop. For some unknown reason the build of nvidia was possible when I uninstalled many old kernels. See

https://forum3.openmandriva.org/t/desktop-died/1962

My desktop is OK now, nvidia is loaded and working fine with kernel 4.16.

This made me try bbswitch again in my laptop. After experimenting a lot, I’ve noticed that
# modprobe nvidia-current nvidia-uvm
modprobe: ERROR: could not insert 'nvidia_current': No such device
even with nvidia installed in the laptop(???). See:

# find . -name nvidia*
./4.15.18-desktop-1omv/kernel/drivers/net/ethernet/nvidia
./4.15.18-desktop-1omv/kernel/drivers/video/fbdev/nvidia
./4.15.18-desktop-1omv/kernel/drivers/video/fbdev/nvidia/nvidiafb.ko.xz
./4.16.13-desktop-1omv/kernel/drivers/net/ethernet/nvidia
./4.16.13-desktop-1omv/kernel/drivers/char/drm/nvidia-current.ko
./4.16.13-desktop-1omv/kernel/drivers/char/drm/nvidia-uvm.ko
./4.16.13-desktop-1omv/kernel/drivers/char/drm/nvidia-drm.ko
./4.16.13-desktop-1omv/kernel/drivers/char/drm/nvidia-modeset.ko
./4.16.13-desktop-1omv/kernel/drivers/video/fbdev/nvidia
./4.16.13-desktop-1omv/kernel/drivers/video/fbdev/nvidia/nvidiafb.ko.gz

Although it had build (testing repos nvidia 396.24 drivers) in kernel 4.16 it was not seen in the kernel tree!

Then I decided to remove old kernel and remove and install nvidia again (as it helped in the desktop!):

# dkms remove nvidia-modeset/396.24-1 --all

and,

# dkms install -m nvidia-current -v 396.24-1

Creating symlink /var/lib/dkms/nvidia-current/396.24-1/source ->
/usr/src/nvidia-current-396.24-1

DKMS: add completed.

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area...
'make' CC=gcc CXX=g++ SYSSRC=/lib/modules/4.16.13-desktop-1omv/build modules -j8...............................
Error! Build of nvidia.ko.gz failed for: 4.16.13-desktop-1omv (x86_64)
Consult the make.log in the build directory
/var/lib/dkms/nvidia-current/396.24-1/build/ for more information.

So, please! Why nvidia no longer build with kernel 4.16 as it did a few weeks ago?

The file make.log has no clear error message as that available at

https://forum3.openmandriva.org/t/desktop-died/1962

2

Errata: Copy/paste error. I’ve removed nvidia drivers with,

dkms remove nvidia-current/396.24-1 --all

3

I’ve been going forth and back with these problems of bbswitch and nvidia. The last thing to say is that after removing all nvidia packages and reinstalling them, nvidia 396.24-1 again built fine with kernel 4.16. I just would like to know what am I doing wrong …

4

If something works or not is determined by users in this case those with nVidia hardware.

Your problems may to be result of trying to combine something that does work (nvidia-current) with something that doesn’t work (bbswitch). I don’t know what it will take to get bbswitch working again. I know Colin is not available right now. It may not be fixed to until Lx 4 is released. Is there a specific bug report for bbswitch? It needs to be separated from nvidia drivers as far as bug reports. Or maybe there is something incorrect in the nvidia-current package code.