I have Ubuntu 19.04 with Linux 5.0 (also Linux 4.15-oem installed). I use NVIDIA Proprietary driver. I have i7 6300hq (I think it does not matters) and NVIDIA GTX960m. I added to kernel
acpi_osi=Linux. On kernel 5.0 when I suspend on Intel profile when I'm waking laptop starts rebooting (but the led is blinking before wake). When I change to NVIDIA profile It suspends and starts normally but wallpaper changes to black and some purple and pink pixels noise (???). When I change to 4.15-oem kernel It suspends normally on Intel profile without any bugs but the NVIDIA PRIME profile don't work. I can change to NVIDIA but after reloging it does not make any change, I am still on Intel.
I've searched to this issue but I found that it was bug in kernel 4.4 and it was on older Ubuntu versions.
PS. I'm using NVIDIA
418.56-0ubuntu1 driver. It is signed in 19.04 as