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Revert "Fix Xf86videointel driver immediate crash on NixOS (Mesa Patch Backport)"

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Vladimír Čunát 2025-02-27 08:06:41 +01:00 • committed by GitHub
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34
nixos/doc/manual/configuration/x-windows.chapter.md
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@ -123,24 +123,6 @@ setting](https://en.wikipedia.org/wiki/Mode_setting) (KMS) mechanism, it
supports Glamor (2D graphics acceleration via OpenGL) and is actively
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}
The `modesetting` driver doesn't currently provide a `TearFree` option (this
will become available in an upcoming X.org release), So, without using a
@ -148,22 +130,20 @@ compositor (for example, see [](#opt-services.picom.enable)) you will
experience screen tearing.
:::
If you experience screen tearing no matter what, this configuration was
reported to resolve the issue:
There also used to be a second driver, `intel` (provided by the
xf86-video-intel package), specific to older Intel iGPUs from generation 2 to
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
{
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}
NVIDIA provides a proprietary driver for its graphics cards that has