[Bug 102528] New: Display messed up shortly after boot on laptop with GT218M

[Bug 102528] New: Display messed up shortly after boot on laptop with GT218M

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https://bugs.freedesktop.org/show_bug.cgi?id=102528

            Bug ID: 102528
           Summary: Display messed up shortly after boot on laptop with
                    GT218M
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: johan.myreen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 133949
  --> https://bugs.freedesktop.org/attachment.cgi?id=133949&action=edit
Kernel messages as reported by journalctl -b -1.

On a Dell Latitute E6410 laptop with the following display adapter:

01:00.0 VGA compatible controller: NVIDIA Corporation GT218M [NVS 3100M] (rev
a2)

Some time ago (kernel 4.10.0) the kernel drm module stopped working, the
display is all messed up after boot and stays so. The first line on the screen
says "Starting version 234" which refers to Systemd version 234. The rest of
the screen in unintelligible.

I'm running Arch Linux. The problem is still there with the latest kernel.

I did a git bisect on the kernel and found the following:

first bad commit: [df8dc97cd17269474344d73cc02739532c468d04]
drm/nouveau/kms/nv50: use drm core i2c-over-aux algorithm

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[Bug 102528] Display messed up shortly after boot on laptop with GT218M

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https://bugs.freedesktop.org/show_bug.cgi?id=102528

--- Comment #1 from Johan Myréen <johan.myreen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 133950
  --> https://bugs.freedesktop.org/attachment.cgi?id=133950&action=edit
Photo of messed up screen.

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[Bug 102528] Display messed up shortly after boot on laptop with GT218M

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https://bugs.freedesktop.org/show_bug.cgi?id=102528

--- Comment #2 from Johan Myréen <johan.myreen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 133951
  --> https://bugs.freedesktop.org/attachment.cgi?id=133951&action=edit
git diff between working and broken kernel commits.

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[Bug 102528] Display messed up shortly after boot on laptop with GT218M

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https://bugs.freedesktop.org/show_bug.cgi?id=102528

--- Comment #3 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
https://github.com/skeggsb/linux/commit/13a86519202c5d119d83640d6f781f3181205d2c

Fixes the i2c-over-aux issues, both pre- and post-gf119.

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[Bug 102528] Display messed up shortly after boot on laptop with GT218M

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https://bugs.freedesktop.org/show_bug.cgi?id=102528

--- Comment #4 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Oh, and btw, additional GT21x issues exist. One is fixed in drm-next:

https://github.com/skeggsb/linux/commit/715e7d261dea75911c4dad468a1103168933d913
https://github.com/skeggsb/linux/commit/6b1277c837630749b55f743dd62023d9dd7a510a

But there's some stuff that remains in devinit, where certain things are
accessed before they're supposed to. Or something along those lines.

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[Bug 102528] Display messed up shortly after boot on laptop with GT218M

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https://bugs.freedesktop.org/show_bug.cgi?id=102528

Johan Myréen <johan.myreen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

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

--- Comment #5 from Johan Myréen <johan.myreen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Fixed in kernel 4.13.

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