[Nix-dev] Dropping --with-gallium-drivers=i965 from mesa (was: Experiences with Nvidia Optimus?)

[Mathijs Kwik]

On Fri, Jan 20, 2012 at 7:17 PM, Peter Simons <simons at cryp.to> wrote:
> Hi guys,
>
>  > In a recent mesa upgrade, someone enabled the experimental gallium3d
>  > driver for our i965-based cards. [...] Intel's open-source driver has
>  > full support for 3d already, and intel stated they are not
>  > interrested in maintaining a second implementation. I don't know
>  > about i915, but i965's gallium driver rotted to the state that it was
>  > thrown out of mesa trunk in november 2011 [1]. Taking i965 out fixed
>  > my issues, and all is well again, with acceleration and 3d.
>  >
>  > I attached a patch (2 commits), the first commit upgrades dri2proto
>  > so the intel 2_17_0 driver (which is already in nix) compiles. The
>  > second commit removed i965 gallium from mesa.
>
> updating mesa causes significant re-builds, so we should wait a couple
> of days to give everyone a chance to express his or her concerns about
> that change.

I don't remember a vote + few days wait for turning it on?!?
Someone just decided to include an unmaintained, already dropped
upstream 2 months ago, experimental driver, breaking things and
causing instability.

I really don't care about that, I break stuff often too, so no blame.
nixos allows me to just revert to a more stable build easily.

It now appears there are some procedures for deciding things and
cooldown periods.
That's all fine with me, but I think it's strange that this applies
here (an obvious regression).

>But please be somewhat consistent
> Personally, I don't need Gallium i965 support, so if disabling that
> feature improves matters for the Intel cards, then I am in favor of
> applying those patches.

I can wait for a few days, everything works here locally. So no hurry ;)

>
> Take care,
> Peter

Have a nice weekend,
Mathijs

>
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