Nouveau - Jul 2014 - [Bug 81363] New: Black screen after UDEV is intialized

https://bugs.freedesktop.org/show_bug.cgi?id=81363

          Priority: medium
            Bug ID: 81363
          Assignee: nouveau at lists.freedesktop.org
           Summary: Black screen after UDEV is intialized
        QA Contact: xorg-team at lists.x.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: jrsx13 at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 7.7 (2011)
         Component: Driver/nouveau
           Product: xorg

Created attachment 102804
  --> https://bugs.freedesktop.org/attachment.cgi?id=102804&action=edit
Dmesg output

When I boot my computer with nouveau and KMS, I get a black screen after UDEV
starts on Debian Testing. I've attached some logs.

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--- Comment #1 from Jeff <jrsx13 at gmail.com> ---
Created attachment 102805
  --> https://bugs.freedesktop.org/attachment.cgi?id=102805&action=edit
lspci -v output

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--- Comment #2 from Jeff <jrsx13 at gmail.com> ---
Created attachment 102806
  --> https://bugs.freedesktop.org/attachment.cgi?id=102806&action=edit
Xorg log

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Black screen after UDEV is  |[NV84] Black screen after
                   |intialized                  |UDEV is intialized

--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Did this ever work? Looks like the internal LVDS screen is detected just fine,
resolutions are all there, no errors. Is it right that the internal screen is
1920x1200?

Can you confirm that the problem still exists with 3.16-rc5?

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--- Comment #4 from Jeff <jrsx13 at gmail.com> ---
I will compile and test 3.16-rc5

I've only ever used Nvidia's drivers on this particular computer so far.
The
screen is 1920x1200. It is an old Dell XPS 1730.

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--- Comment #5 from Jeff <jrsx13 at gmail.com> ---
It is the same with 3.16-rc5

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--- Comment #6 from Jeff <jrsx13 at gmail.com> ---
Created attachment 102875
  --> https://bugs.freedesktop.org/attachment.cgi?id=102875&action=edit
Kernel 3.16-rc5

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--- Comment #7 from Jeff <jrsx13 at gmail.com> ---
Created attachment 102876
  --> https://bugs.freedesktop.org/attachment.cgi?id=102876&action=edit
Kernel 3.16-rc5

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--- Comment #8 from Jeff <jrsx13 at gmail.com> ---
Created attachment 102877
  --> https://bugs.freedesktop.org/attachment.cgi?id=102877&action=edit
lspci -v on kernel 3.16-rc5

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--- Comment #9 from Jeff <jrsx13 at gmail.com> ---
Created attachment 102878
  --> https://bugs.freedesktop.org/attachment.cgi?id=102878&action=edit
Xorg log on 3.16-rc5

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--- Comment #10 from Jeff <jrsx13 at gmail.com> ---
kernel 3.18 has the same issue

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--- Comment #11 from Jeff <jrsx13 at gmail.com> ---
This is still not working on Kernel 4.2. But during this test I had the laptop
connected to a DVI output. And the DVI output worked great. So it seems this is
not working for the LVDS only, which has the black light on but remains
blank/black.

I noticed on a Google search that there had been blank screen issues on
pre-nv50 drivers: http://patchwork.ozlabs.org/patch/215168/

I wonder if this is something that exists on my card as well. I was glad to see
the display working on the DVI output, but I am hoping to have this working on
LVDS at some point.

Thanks

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--- Comment #12 from Ilia Mirkin <imirkin at alum.mit.edu> ---
A random thing to try -- boot with

video=LVDS-2:d

(It appears that you have 2 GPUs... perhaps they're both connected to the
LVDS
somehow, and the second one turns it off?)

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--- Comment #13 from Jeff <jrsx13 at gmail.com> ---
(In reply to Ilia Mirkin from comment #12)
> A random thing to try -- boot with
> 
> video=LVDS-2:d
> 
> (It appears that you have 2 GPUs... perhaps they're both connected to
the
> LVDS somehow, and the second one turns it off?)
I tried this. And it was still a black/blank screen. However maybe you are onto
something as this is a laptop with a Nvidia 8700m setup as an sli card. Though
with the proprietary driver and with Windows it has no issue booting up
properly. However I find windows really slow and would like to switch to
nouveau to future proof my laptop since I am betting Nvidia won't develop a
Wayland driver for this card.

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Martin Peres <martin.peres at free.fr> changed:

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

--- Comment #14 from Martin Peres <martin.peres at free.fr> ---
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