[Bug 67382] New: [nouveau, nv50] linux 3.9.7-3.10.3: Xorg won't be available

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=67382

          Priority: medium
            Bug ID: 67382
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: [nouveau, nv50] linux 3.9.7-3.10.3: Xorg won't be
                    available
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: anonymous-IjDkMZObD1hBDgjK7y7TUQ@public.gmane.org
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

After looking at #66129 and testing linux 3.10.3 (includes the patches from
66129) and still having problems, I decided to open a bugreport, as the problem
appears to be something else.
I'm not sure if the topic describes the problem really well.


First I should mention, that I wrote a bugreport on the kernel tracker:
https://bugzilla.kernel.org/show_bug.cgi?id=60071
Which was probably the wrong place, and a complete different description.


Machine:
One from the nv50 (8800 GTS) graphic cards. One monitor.

Notes:
*early KMS


Issue:
With 3.9.6 everything is working fine. Systems boots and I'm getting my DM

3.9.7 introduced following changes:
commit aed4802d2a0d2f6c7179a2c03e184860741788c0
Author: Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Date: Mon Jun 3 16:40:14 2013 +1000

drm/nv50/kms: use dac loadval from vbios, where it's available

commit d40ee48acde16894fb3b241d7e896d5fa84e0f10 upstream.
-------
commit b242745947ed7562ad91dad9e9fde1a92e40d666
Author: Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Date: Mon Jun 3 16:07:06 2013 +1000

drm/nv50/disp: force dac power state during load detect

commit ea9197cc323839ef3d5280c0453b2c622caa6bc7 upstream.
-------

Since 3.9.7 (also tested with 3.9.8 and 3.10.3) the X-server won't be
accessible. If that's the right description. I'm just seeing a black screen and
I just can switch back to a tty (which takes it time).
Tried it with a DM and without (plain xinit/startx from tty).


Output:

With Linux 3.9.6:
xrandr message:
^[xRandr^[: Found crtc's: 2
^[xRandr^[: Linking output DVI-I-1 with crtc 0


Output of xrandr --current:
Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 8192 x 8192
DVI-I-1 connected 1680x1050+0+0 (normal left inverted right x axis y axis)
473mm x 296mm
1680x1050 59.9*+
1400x1050 74.9
1280x1024 75.0
1440x900 75.0 59.9
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 72.8 75.0 66.7 60.0
720x400 70.1
DVI-I-2 disconnected (normal left inverted right x axis y axis)


Logs with Linux 3.9.7:
xrandr message:
xRandr: Found crtc's: 2
xRandr: Linking output DVI-I-1 with crtc 0
xRandr: Linking output DVI-I-2 with crtc 1


Output of xrandr --current:
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
DVI-I-1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 473mm
x 296mm
1680x1050 59.9 +
1400x1050 74.9
1280x1024 75.0
1440x900 75.0 59.9
1152x864 75.0
1024x768 75.1 70.1 60.0*
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 72.8 75.0 66.7 60.0
720x400 70.1
DVI-I-2 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x
0mm
1024x768 60.0*
800x600 60.3 56.2
848x480 60.0
640x480 59.9


I'm adding a dmesg snippet later.

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