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nixos/doc: xf86videointel is available again

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Tim Keller 2025-03-08 08:30:12 -06:00
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34
nixos/doc/manual/configuration/x-windows.chapter.md
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@ -123,6 +123,24 @@ setting](https://en.wikipedia.org/wiki/Mode_setting) (KMS) mechanism, it
supports Glamor (2D graphics acceleration via OpenGL) and is actively supports Glamor (2D graphics acceleration via OpenGL) and is actively
maintained, it may perform worse in some cases (like in old chipsets). maintained, it may perform worse in some cases (like in old chipsets).
There is a second driver, `intel` (provided by the xf86-video-intel package),
specific to older Intel iGPUs from generation 2 to 9. It is not recommended by
most distributions: it lacks several modern features (for example, it doesn't
support Glamor) and the package hasn't been officially updated since 2015.
Third generation and older iGPUs (15-20+ years old) are not supported by the
`modesetting` driver (X will crash upon startup). Thus, the `intel` driver is
required for these chipsets.
Otherwise, the results vary depending on the hardware, so you may have to try
both drivers. Use the option
[](#opt-services.xserver.videoDrivers)
to set one. The recommended configuration for modern systems is:
```nix
{
services.xserver.videoDrivers = [ "modesetting" ];
}
```
::: {.note} ::: {.note}
The `modesetting` driver doesn't currently provide a `TearFree` option (this The `modesetting` driver doesn't currently provide a `TearFree` option (this
will become available in an upcoming X.org release), So, without using a will become available in an upcoming X.org release), So, without using a
@ -130,20 +148,22 @@ compositor (for example, see [](#opt-services.picom.enable)) you will
experience screen tearing. experience screen tearing.
::: :::
There also used to be a second driver, `intel` (provided by the If you experience screen tearing no matter what, this configuration was
xf86-video-intel package), specific to older Intel iGPUs from generation 2 to reported to resolve the issue:
9.
This driver hasn't been maintained in years and was removed in NixOS 24.11
after it stopped working. If you chipset is too old to be supported by
`modesetting` and have no other choice you may try an unsupported NixOS version
(reportedly working up to NixOS 24.05) and set
```nix ```nix
{ {
services.xserver.videoDrivers = [ "intel" ]; services.xserver.videoDrivers = [ "intel" ];
services.xserver.deviceSection = ''
Option "DRI" "2"
Option "TearFree" "true"
'';
} }
``` ```
Note that this will likely downgrade the performance compared to
`modesetting` or `intel` with DRI 3 (default).
## Proprietary NVIDIA drivers {#sec-x11-graphics-cards-nvidia} ## Proprietary NVIDIA drivers {#sec-x11-graphics-cards-nvidia}
NVIDIA provides a proprietary driver for its graphics cards that has NVIDIA provides a proprietary driver for its graphics cards that has