Had the same problem, the reason was that prime-select was set to intel
instead of nvidia.
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https://bugs.launchpad.net/bugs/1774359
Title:
could not
Similar activity on 440 version of drivers.
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https://bugs.launchpad.net/bugs/1774359
Title:
could not find module by name='off'
Status in
Just upgraded from Ubuntu 16 to 18.04.
In my case the problem arises when I unload the driver and then try to
load it again. After the error dmesg states the possible cause:
[ 966.030549] NVRM: API mismatch: the client has the version 390.116, but
NVRM: this kernel module has the
Same problem here, with Ubuntu 18.04, Nvidia drivers 410.
After commenting the following lines:
#alias nvidia off
#alias nvidia-drm off
#alias nvidia-modeset off
either in /usr/bin/prime-select (as suggested above) or directly in
/lib/modprobe.d/blacklist-nvidia.conf I can load the driver,
So i actually found one in /lib/modprobe.d/blacklist-nvidia.conf
Blacklisting it actually solved the bug, but my ubuntu is crashing after that,
but that's another story.
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I see only few solutions to this bug:
- Somehow find file which has 'alias nvidia off', because I can't find any
- Debug this kernel module (which is actually a very long process)
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I can confirm that I also have that bug with nvidia 410 and bumblebee.
Bumblebee tries to modprobe nvidia and fails with same error
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Comment lines at /etc/modprobe.d/nvidia-...conf
not working
~$ sudo modprobe nvidia
same error:
modprobe: ERROR: ../libkmod/libkmod-module.c:832 kmod_module_insert_module()
could not find module by name='off'
modprobe: ERROR: could not insert 'off': Unknown symbol in module, or unknown
Same problem with nvidia 410.
Reinstall not working.
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https://bugs.launchpad.net/bugs/1774359
Title:
could not find module by name='off'
Status in
Same problem with nvidia 410
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https://bugs.launchpad.net/bugs/1774359
Title:
could not find module by name='off'
Status in
Fixed it by commenting lines in 159-161 in /usr/bin/prime-select:
#alias nvidia off
#alias nvidia-drm off
#alias nvidia-modeset off'''
Also, comment lines 3-4 in /lib/modprobe.d/nvidia-graphics-drivers.conf
#alias nouveau off
#alias lbm-nouveau off
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Ubuntu 18.04 on Asus Zenbook Pro UX901V, GeForce GTX 960M, both nvidia
390 and 396.
Commenting the alias lines didn't work for me.
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Ubuntu 18.04 On Precision 5530 Quadro P1000
Confirm the issue with nvidai 396.
I solve it by using Rocko (rockorequin)'s solution
Commenting out lines in /etc/modprobe.d/.conf fixed it:
alias off
Original post:
https://bugs.launchpad.net/ubuntu/+source/bumblebee/+bug/1438106
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Kubuntu 18.04 on a T430 with an nvidia 5400M.
Same issue with nvidia 390 and 396.
Not using Bumblebee.
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https://bugs.launchpad.net/bugs/1774359
Title:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: nvidia-graphics-drivers-390 (Ubuntu)
Status: New => Confirmed
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