[Bug 94844] New: Ditching xf86-video-nouveau in favor of xf86-video-modesetting?

[Bug 94844] New: Ditching xf86-video-nouveau in favor of xf86-video-modesetting?

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https://bugs.freedesktop.org/show_bug.cgi?id=94844

            Bug ID: 94844
           Summary: Ditching xf86-video-nouveau in favor of
                    xf86-video-modesetting?
           Product: xorg
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: nw9165-3201-/E1597aS9LQAvxtiuMwx3w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Hello,

according to the discussion in the following Phoronix forum thread:

https://www.phoronix.com/forums/forum/phoronix/latest-phoronix-articles/863332-intel-s-unreleased-3-0-x-org-driver-gets-more-fixes-for-dri3-present

the generic xf86-video-modesetting DDX driver included in xorg-server seems to
be better than most vendor specific xf86-video- drivers.

I am wondering:

Then why not ditch xf86-video-nouveau in favor of xf86-video-modesetting?

Regards

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[Bug 94844] Ditching xf86-video-nouveau in favor of xf86-video-modesetting?

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https://bugs.freedesktop.org/show_bug.cgi?id=94844

poma <pomidorabelisima-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #1 from poma <pomidorabelisima-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---

https://nouveau.freedesktop.org/wiki/Bugs/
"... We also have a mailing list where you can ask questions, discuss patches
or whatever is related to nouveau and its tools."

https://lists.freedesktop.org/mailman/listinfo/nouveau

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[Bug 94844] Ditching xf86-video-nouveau in favor of xf86-video-modesetting?

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https://bugs.freedesktop.org/show_bug.cgi?id=94844

--- Comment #2 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
https://xkcd.com/386/

(a) GLAMOR accel would only work on G80+, nouveau supports Riva TNT2 and up.
(b) xf86-video-nouveau is well tested and simple, the GL driver is complex and
causes crashes for a lot of people
(c) Many people choose not to install nouveau's GL driver (for improved
stability), would now be stuck without acceleration
(d) GLAMOR happens to trigger some bugs in nouveau's GL impl that I've been
unable to track down

Look at all the trouble Maxwell has had as a result of not having a dedicated
EXA impl in xf86-video-nouveau and being stuck with modesetting/glamor.

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[Bug 94844] Ditching xf86-video-nouveau in favor of xf86-video-modesetting?

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https://bugs.freedesktop.org/show_bug.cgi?id=94844

--- Comment #3 from Ben Skeggs <skeggsb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to Ilia Mirkin from comment #2)
> https://xkcd.com/386/
> 
> (a) GLAMOR accel would only work on G80+, nouveau supports Riva TNT2 and up.
> (b) xf86-video-nouveau is well tested and simple, the GL driver is complex
> and causes crashes for a lot of people
> (c) Many people choose not to install nouveau's GL driver (for improved
> stability), would now be stuck without acceleration
> (d) GLAMOR happens to trigger some bugs in nouveau's GL impl that I've been
> unable to track down
> 
> Look at all the trouble Maxwell has had as a result of not having a
> dedicated EXA impl in xf86-video-nouveau and being stuck with
> modesetting/glamor.

(d) is no longer an issue it seems, I've been running in this configuration for
weeks now and the two issues that used to appear no longer do.  I'm not
entirely sure it was our bug, and not just glamor doing something
inappropriate.

Personally, I'm all for using -modesetting on >=G80 and no longer plan on
maintaining -nouveau beyond bug fixes.  So, new hardware, and MST support will
require -modesetting unless someone else does the work.

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[Bug 94844] Ditching xf86-video-nouveau in favor of xf86-video-modesetting?

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--- Comment #4 from nw9165-3201-/E1597aS9LQAvxtiuMwx3w@public.gmane.org ---
This has made it to the news, see:

http://www.phoronix.com/scan.php?page=news_item&px=Nouveau-Vs-Modesetting

;D

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