Gillian's questions

I am on Kubuntu 18.04.

I am manually throttling CPU at ~1.8Ghz. Undervolted -150mV CPU and cache.

But for some reasons the temps just don't go down. Can it be the dGPU (1050 Ti Max Q) acting out? In the drivers settings I can only choose the proprietary nvidia driver or xserver-xorg-video-nouveau. AFAIK nouveau is just proprietary nvidia driver. Is there any way to use iGPU and turn off the dGPU completely? I tried to install xserver-xorg-video-intel but it says it's already installed but I can't see it in the driver selection window.

I get better temps on Windows.

I dual installed Kubuntu on a computer with Windows 10, grub is on /dev/sda while the Windows boot manager is on /nvmesomethingsomething.

To install it, I had to set SATA from RAID to AHCI in the UEFI BIOS Setup. With SATA AHCI the boot of Kubuntu works. But when I try to boot into Windows, I get a BSOD with INACCESSIBLE_BOOT_DEVICE.

If in UEFI, and I select RAID instead of AHCI, I can boot into Windows, but Kubuntu's boot process results in me ending up in an initramfs terminal.

So I can get only one or the other, but never both working systems.
Is there any solution?