[Bug 79522] New: [NV67] Possible Regression 3.14.4+

[Bug 79522] New: [NV67] Possible Regression 3.14.4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=79522

          Priority: medium
            Bug ID: 79522
          Keywords: regression
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: [NV67] Possible Regression 3.14.4+
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: storkus-FfzuIwEQ1aBBDgjK7y7TUQ@public.gmane.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Note: this may be related to Bug#70972.

My Acer Aspire 5520-5092 with a GeForce 7000M/nForce 610M MCP-67 running
Slackware 14.1 was working fine until I updated to kernel 3.14.4.  I had
previously upgraded to 3.14.3 and nothing happened then.  Upgrading again today
to 3.14.5 did not fix the problem, although it behaves slightly differently.

The problem is that, during boot, upon KMS loading and the framebuffer starting
up, the laptop backlight does not turn on most of the time; part of the time
when it does, I still have a blank screen.  Sometimes the machine seems to have
booted up, but most of the time it appears locked, yet without a blinking LED. 
This has all the hallmarks of a race as rebooting enough times gives a working
system.  I haven't yet tried using an external monitor.

The only other update the Slackware has done since this started is messing with
LibELF--still 0.8.13, but with new compile options.  This was done
simultaneously with the kernel updates.  I don't see how this could affect the
kernel prior to mounting anything, though.

Thanks for any help, and a needed project!  Mike

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[Bug 79522] [NV67] Possible Regression 3.14.4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=79522

--- Comment #1 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Do I understand correctly that v3.14.3 works but v3.14.4 doesn't? If so, that's
rather odd, since no drm changes went in between those two versions. If not,
can you be more explicit about what the last working version was? You might
need to do a bisect. Another thing to try is to turn off MSI (boot with
nouveau.config=NvMSI=0).

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[Bug 79522] [NV67] Possible Regression 3.14.4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=79522

Mike <storkus-FfzuIwEQ1aBBDgjK7y7TUQ@public.gmane.org> changed:

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

--- Comment #2 from Mike <storkus-FfzuIwEQ1aBBDgjK7y7TUQ@public.gmane.org> ---
Update: my laptop's display totally died yesterday--no backlight OR anything
displayed in reflected light.  Booting in Vista (which I had saved on the old
hard driver that came with it when I replaced it with an SSD) didn't change
anything.  Vista showed no monitor present other than the external one I had
connected, which it read as PnP generic.

One oddity: both Vista and the BIOS Int13 displayed on an external SVGA monitor
just fine, yet Slackware 14.1 updated to 3.14.12(?) would not--yet some Nouveau
versions, including 3.10.17 that came stock when Slackware 14.1 came out, did
just fine as I was using Nouveau at a couple of LUG meetings talking to a
projector.

Anyway, at this point I think its near-impossible to state whether Nouveau
screwed with something in BIOS it should have, or this was an intermittent
hardware failure that coincidentally started when I upgraded to kernel 3.14
(stranger things have happened), or what, but at 7 years old, I've been
thinking for a while of replacing this laptop--guess I have a good reason now.

Marking this resolved-invalid unless any of you can think of a reason why not.

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