[Bug 1778011] Re: SRU: PRIME Power Saving mode draws too much power

[Pe4enko]

Should it work on ubuntu 18.10? I try to install 390 driver. After this i run command 
sudo prime-select nvidia and restart system. But GUI no work anymore. In kernel log i see errors.
My video card is geforce 750M

Jan 11 02:38:17 lblack kernel: [  121.613281] nvidia: loading out-of-tree module taints kernel.
Jan 11 02:38:17 lblack kernel: [  121.613290] nvidia: module license 'NVIDIA' taints kernel.
Jan 11 02:38:17 lblack kernel: [  121.613290] Disabling lock debugging due to kernel taint
Jan 11 02:38:17 lblack kernel: [  121.616641] nvidia: module verification failed: signature and/or required key missing - tainting kernel
Jan 11 02:38:17 lblack kernel: [  121.623093] nvidia-nvlink: Nvlink Core is being initialized, major device number 238
Jan 11 02:38:17 lblack kernel: [  121.623677] NVRM: loading NVIDIA UNIX x86_64 Kernel Module  390.87  Tue Aug 21 12:33:05 PDT 2018 (using threaded interrupts)
Jan 11 02:38:17 lblack kernel: [  121.625479] NVRM: API mismatch: the client has the version 410.66, but
Jan 11 02:38:17 lblack kernel: [  121.625479] NVRM: this kernel module has the version 390.87.  Please
Jan 11 02:38:17 lblack kernel: [  121.625479] NVRM: make sure that this kernel module and all NVIDIA driver
Jan 11 02:38:17 lblack kernel: [  121.625479] NVRM: components have the same version.

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Title:
  SRU: PRIME Power Saving mode draws too much power

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