Also, when I was trying to switch using Nouveau, I tried running systemctl status optimus-manager.service in the tty, and the this was the last line:
[33742] INFO: Writing state {'type': 'pending_pre_xorg_start', 'requested_mode': 'nvidia', 'current_mode': 'intel'}
Hello,
Nor quite experienced with Optimus-Manager, but from what i gathered it requires Nvidia Drivers to work and in most cases to add modprobe.blacklist=nouveau as kernel boot parameter. Have you tried that when using the Nvidia drivers.
When switching to Nouveau, have you checked is was still blacklisted or not in /etc/modprobe.d/ file stou have there?
If you have trouble to switch to Nvidia GPU then i guess you missed some step in the tutorial you followed.
Since Optimus-Manager also requires to disable bumblebeed.service … i don’t know if you did that too.
This is my /etc/modprobe.d file and it says that Nouveau is blacklisted:
>>> cat mhwd-gpu.conf
##
## Generated by mhwd - Manjaro Hardware Detection
##
blacklist nouveau
blacklist ttm
blacklist drm_kms_helper
blacklist drm
options nvidia "NVreg_DynamicPowerManagement=0x02"
And about bumblebee, i have never installed it, and it doesn’t exist in my system, so i don’t think that’s the problem
Ok, but i see a problem here. If you tested nouveau with that file, then it would not work. Also, to my knowledge with the
then NVIDIA GPU driver will allow the GPU to go into its lowest power state when no applications are running that use the nvidia driver stack. Whenever an application requiring NVIDIA GPU access is started, the GPU is put into an active state. In other words, you have to use prime-run <application> to use the dGPU with it. Are you sure if that option allows then to completely switch to dGPU and is not only for render-offload?
Maybe @openminded and @michaldybczak pass by with their hands on experience 
So should I try commenting that line?
Not sure what driver are you using right now. From here:
is like none.
Then the alternate is even more confusing for me. I would go step by step from the linked tutorial and see what is different. You still should have better results with the Nvidia driver than nouveau. But, did you also checked if that HP laptop doesn’t require some custom kernel boot parameters related to ACPI, as described here:
Are you sure you have installed the nvidia propietary drivers? I have a 1050 Ti and i can connect to the TV just fine,you need to install the video-hybrid-intel-nvidia-450xx-prime drivers,you can find it in hardware configuration,if you are using KDE is in the settings
in my inxi,my driver appears like this
Device-2: NVIDIA GP107M [GeForce GTX 1050 Ti Mobile] vendor: Dell
driver: nvidia v: 450.66 alternate: nouveau,nvidia_drm bus ID: 01:00.0
chip ID: 10de:1c8c
I’m a noob when it comes to linux, but I’m pretty sure I didn’t set any parameters related to ACPI, this is what I’m using:
GRUB_CMDLINE_LINUX_DEFAULT="quiet apparmor=1 security=apparmor resume=UUID=8a55e655-a595-4619-847e-091f12bb98da udev.log_priority=3"
The driver I’m using is video-hybrid-intel-nvidia-prime-440x. And about the HP laptop, I’m not sure if I need specific kernel parameters, but I do see ACPI errors in my journalctl, I can attach them if you want to. I’m attaching mhwd li:
>>> mhwd -li
> Installed PCI configs:
--------------------------------------------------------------------------------
NAME VERSION FREEDRIVER TYPE
--------------------------------------------------------------------------------
video-hybrid-intel-nvidia-440xx-prime 2019.10.25 false PCI
video-modesetting 2020.01.13 true PCI
video-linux 2018.05.04 true PCI
Warning: No installed USB configs!
The 440 don’t allow the HDMI to work,that was fixed in the 450.
Update to the 450.
I see, is there a clean way to uninstall 440 and install 450?
I don’t know how to do it in the terminal way,but in the gui you just right click the 440 driver and select remove,then right click on the 450 and select install,then you should reboot.
@XRaTiX That did the trick, I’ve upgraded to 450xx and I’m able to connect to my TV now, and xrandr -q outputs this:
>>> xrandr -q
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
...
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-1-2 connected (normal left inverted right x axis y axis)
...
However I still can’t switch to nvidia using optimus-manager, it still blacks out.
>>> inxi -G
Graphics:
Device-1: Intel UHD Graphics 630 driver: i915 v: kernel
Device-2: NVIDIA GP107M [GeForce GTX 1050 Mobile] driver: nouveau
v: kernel
Device-3: Chicony HP Wide Vision HD type: USB driver: uvcvideo
Display: x11 server: X.org 1.20.8 driver: modesetting
resolution: <xdpyinfo missing>
OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2) v: 4.6 Mesa 20.1.7
Please help!
Intel is barely keeping up with the display, I see a lot of breaks in the display when I scroll.
You don’t need to switch to nvidia anymore to use the HDMI port,in the 450 driver you can now use hybrid mode the HDMI port,try using that one.
One note,i don’t know why still mark that you are using nouveau,thats weird.
Just tried hybrid mode and that blacks out as well. I’m using Nouveau in the swtiching method.
Yeah me too, anyways @XRaTiX thanks man I’m atleast happy that the HDMI works, have been at the HDMI thingy for a week now. But I’d really like to use the 4GB Nvidia card, somebody help!
Also, I’mn not able to open nvidia-settings which gives me even more reason to believe that something isn’t right with my drivers, should I start a new thread perhaps?
>>> nvidia-settings
ERROR: NVIDIA driver is not loaded
ERROR: Unable to load info from any available system
Maybe thats why? you don’t have nouveau drivers so you should not use nouveau method,try using bbswitch method.
EDIT: Correction,you have nouveau drivers,but you are not using the nvidia propietary drivers.
There is a explanation in the optimus-manager wiki of what does each option,normally bbswitch works for most laptops,but try with bbswitch.
I just tried using bbswitch and rebooting caused my HDMI to stop working again 
I’ve installed bbswitch, but there is still a warning that pops up when I try to switch “The bbswitch module does not seem to be available for the current kernel”, and it logs back with the intel card.
Did you install the linux58-bbswitch?,that the one you should use because you have kernel 5.8
I think I broke my DM, I uninstalled linux414-bbswitch and installed linux58-bbswitch now I’m not able to boot into a DM…
Unable to open a tty either, tried at keys Ctrl + Alt + F1 to F12 …
Okay, I somehow managed to open a tty session by appending a 3 after quiet in the GRUB_LINUX line. I reinstalled linux414-bbswitch and I’m able to boot into a DM now…
Phew.