Nouveau - May 2012 - [Bug 50175] New: [regression kernel 3.4] : nouveau detects internal laptop display as "disconnected" / screen is turned off

https://bugs.freedesktop.org/show_bug.cgi?id=50175

             Bug #: 50175
           Summary: [regression kernel 3.4] : nouveau detects internal
                    laptop display as "disconnected" / screen is
turned
                    off
    Classification: Unclassified
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: mus.svz at gmail.com
         QAContact: xorg-team at lists.x.org


Created attachment 61914
  --> https://bugs.freedesktop.org/attachment.cgi?id=61914
dmesg output

After upgrading from kernel 3.3.6 to 3.4.0 the internal display of my laptop
turns off as soon as the nouveau driver / KMS is loaded. xrandr detects the
LVDS-1 connection as "disconnected" while my external HDMI display
works fine.
Downgrading back to 3.3.6 fixes the problem.

Note that this is NOT an Optimus laptop, the integrated Intel graphic chip is
disabled.

Sony Vaio S (VPCS11C5E)
NVIDIA GeForce 310M
Intel Core i5 M520
Arch Linux x64 (testing)

Although I assume this is irrelevant since this is obviously not an X problem:
xorg-server 1.12.1.902
xf86-video-nouveau 0.0.16_git20120512
libdrm 2.4.33
libdrm-nouveau 2.4.34
nouveau-dri 8.0.3

output of dmesg, lspci and xrandr are attached.

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mus.svz at gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #61914|application/octet-stream    |text/plain
          mime type|                            |

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--- Comment #1 from mus.svz at gmail.com 2012-05-21 07:21:51 PDT ---
Created attachment 61915
  --> https://bugs.freedesktop.org/attachment.cgi?id=61915
output of "lspci -vv"

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--- Comment #2 from mus.svz at gmail.com 2012-05-21 07:22:12 PDT ---
Created attachment 61916
  --> https://bugs.freedesktop.org/attachment.cgi?id=61916
xrandr output

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--- Comment #3 from mus.svz at gmail.com 2012-06-08 06:32:27 PDT ---
same problem in 3.5-rc1. any more info I can provide?

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--- Comment #4 from m.b.lankhorst at gmail.com 2012-06-08 06:51:41 PDT ---
Xorg log perhaps :)

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--- Comment #5 from mus.svz at gmail.com 2012-06-08 07:00:30 PDT ---
Created attachment 62795
  --> https://bugs.freedesktop.org/attachment.cgi?id=62795
Xorg.0.log

this is with xorg-server 1.12.2 / kernel 3.4.1

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--- Comment #6 from Karol Babioch <karol at babioch.de> 2012-06-15
10:35:10 PDT ---
I'm also affected by this issue. Early during boot (probably when nouveau
gets
loaded) my screen gets blank/black. Observed this with both, Arch Linux and
Fedora, both running on 3.4.

Serious regression, as I can remember the same kind of issue with kernels prior
to 2.6.38.

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--- Comment #7 from Karol Babioch <karol at babioch.de> 2012-06-15
10:38:28 PDT ---
Just forgot to mention: I've also got a Sony VAIO (VPCS12C5E) with a
dedicated
NVIDIA GeForce graphics card (310M). So probably it is something specific to
Sony.
I'm happy to provide logs of any sort, if needed. Just let me know.

However I don't think that it has something to do with X, because it goes
black/blank during early boot, just before any X related stuff is started.

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--- Comment #8 from WorMzy Tykashi <wormzy.tykashi at gmail.com>
2012-06-16 13:21:14 PDT ---
Similar problem here, but not on a Sony laptop.

Booting with nomodeset appears to be the only way of successfully booting, but
then prevents the starting of X due to "No screens found". Without
nomodeset,
screen goes into power savings mode (no video output), and boot does not appear
to complete (at least, I can't ssh into the affected PC).

I don't think this is a hardware-specific problem, but here's a list of
my PC's
hardware, just in case:

Mobo: ASUS P8Z77-V PRO
Processor: Intel Core i5-3570K 3.4GHz
GFX: nVidia GeForce GTX 560 Ti

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--- Comment #9 from Rikhard <blueba at sci.fi> 2012-06-17 04:22:52 UTC ---
Same problem here with kernel 3.4.x on Aptosid when the nouveau driver is
loading. Kernel 3.3.6 works all right.
I have a Nvidia Geforce 8800 GTS 512 graphic card.

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--- Comment #10 from Karol Babioch <karol at babioch.de> 2012-06-19
06:25:40 PDT ---
There seems to be a working patch over at the kernel.org bug tracker (see [1]).
Interestingly enough I was pointed at it while trying to fix another issue, so
I was quite surprised that it fixes this one.

Maybe someone else could try it in order to confirm it.

[1] https://bugzilla.kernel.org/attachment.cgi?id=73576

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--- Comment #11 from mus.svz at gmail.com 2012-06-19 07:16:08 PDT ---
I applied the patch against 3.4.2 and I can confirm that it fixes it, thanks!

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--- Comment #12 from black_painkiller at yahoo.it 2012-06-19 13:56:01 PDT ---
It works on my vaio cw with kernel 3.5rc3 and fixes my bug
https://bugzilla.kernel.org/show_bug.cgi?id=43231

thanks!

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Emil Velikov <emil.l.velikov at gmail.com> changed:

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

--- Comment #13 from Emil Velikov <emil.l.velikov at gmail.com> 2012-06-19
14:02:16 PDT ---
Duplicate of https://bugzilla.kernel.org/show_bug.cgi?id=43168

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--- Comment #14 from Emil Velikov <emil.l.velikov at gmail.com> 2012-06-24
14:53:56 PDT ---
Just to clarify - this is an ACPI issue and nouveau is the victim of it

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