mirror of
https://github.com/hyprwm/hyprland-wiki.git
synced 2024-11-05 21:15:58 +01:00
98a2cbcadd
Co-authored-by: WasteOfO2 <pvpsocialonline18@mail.com> Co-authored-by: Mihai Fufezan <fufexan@protonmail.com>
76 lines
2.5 KiB
Markdown
76 lines
2.5 KiB
Markdown
# Table of contents
|
|
|
|
{{< toc >}}
|
|
|
|
# General
|
|
|
|
If your host machine uses multiple GPUs, you may want to primarily use one GPU
|
|
for rendering all the elements for Hyprland including windows, animations, and
|
|
another for hardware acceleration for certain applications, etc.
|
|
|
|
This setup is very common in the likes of gaming laptops,
|
|
GPU-passthrough (without VFIO) capable hosts, and if you have multiple GPUs in
|
|
general.
|
|
|
|
# Detecting GPUs
|
|
|
|
For this case, the writer is taking the example of their laptop.
|
|
|
|
Upon running `lspci | grep -E 'VGA|3D'`, One can list all the video devices
|
|
available.
|
|
|
|
```
|
|
01:00.0 VGA compatible controller: NVIDIA Corporation TU117M [GeForce GTX 1650 Mobile / Max-Q] (rev a1)
|
|
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] (rev c6)
|
|
```
|
|
Here it is clear that 2 GPUs are available, the dedicated NVIDIA GTX 1650 Mobile
|
|
/ Max-Q and the integrated AMD Cezanne Radeon Vega Series GPU.
|
|
|
|
Now, run `ls -l /dev/dri/by-path`
|
|
|
|
```
|
|
total 0
|
|
lrwxrwxrwx 1 root root 8 Jul 14 15:45 pci-0000:01:00.0-card -> ../card0
|
|
lrwxrwxrwx 1 root root 13 Jul 14 15:45 pci-0000:01:00.0-render -> ../renderD128
|
|
lrwxrwxrwx 1 root root 8 Jul 14 15:45 pci-0000:06:00.0-card -> ../card1
|
|
lrwxrwxrwx 1 root root 13 Jul 14 15:45 pci-0000:06:00.0-render -> ../renderD129
|
|
```
|
|
|
|
So from the above outputs, we can match the bus IDs and determine that NVIDIA is
|
|
`card0` and AMD is `card1`.
|
|
|
|
# Telling Hyprland which GPU to use
|
|
|
|
After determining which "card" belongs to which GPU, we now have to tell
|
|
Hyprland the GPU we want to use primarily.
|
|
|
|
{{< hint type=info >}}
|
|
|
|
It is generally a good idea for laptops to use the integrated GPU as the primary
|
|
renderer as this preserves battery life and is practically indistinguishable
|
|
from using the dedicated GPU on modern systems in most cases. Hyprland can be
|
|
run on integrated GPUs just fine. The same principle applies for desktop setups
|
|
with a lower and higher power rating GPUs respectively.
|
|
|
|
{{< /hint >}}
|
|
|
|
We can do so by using the `WLR_DRM_DEVICES` variable.
|
|
|
|
Add the following template to `hyprland.conf`
|
|
|
|
```ini
|
|
env = WLR_DRM_DEVICES,/dev/dri/cardN
|
|
```
|
|
|
|
For our case, we want to use `card1` primarily and use it to render stuff.
|
|
|
|
```ini
|
|
env = WLR_DRM_DEVICES,/dev/dri/card1:/dev/dri/card0
|
|
```
|
|
|
|
Here, we tell Hyprland to set priorities. If `card1` isn't available for
|
|
whatever reason, use `card0`. So if the AMD GPU isn't available, use NVIDIA. The
|
|
colon is for setting priorities, essentially.
|
|
|
|
You should now be able to use an integrated GPU for for lighter GPU loads,
|
|
including Hyprland.
|