[Bug 91705] New: [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

[Bug 91705] New: [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

            Bug ID: 91705
           Summary: [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI
                    outputs
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

I have a brand new computer with an NVE7-based card (GT740); the card has three
physical outputs, 1 each DVI, HDMI, and VGA.  I have two monitors.  If I
connect one to the DVI and one to the VGA port, or if I just connect one
monitor to the DVI port, it boots successfully.  But if I connect one monitor
to the DVI port and the other to the HDMI port (using an HDMI-to-DVI adapter
cable), the GPU and/or the kernel component of the nouveau driver crash
immediately upon switching the console to nouveaufb.  (This happens before the
X server starts.) Both monitors go into power save, the keyboard is
unresponsive, and there is a flood of nouveau-related errors in the kernel log.
 Later, X *thinks* it has started successfully -- there's nothing that looks
like an error to me in xorg.0.log -- but the monitors do not wake up and the
keyboard remains unresponsive.  I can, however, ssh into the computer.

(It now occurs to me to try connecting just one monitor to HDMI.  I will do
that after submitting this bug report.)

I will attach dmesg and xorg logs from both successful and unsuccessful boots. 
Please let me know if any additional information is required.

I'm using distribution packages of everything involved, from Debian unstable as
of, er, today.  The Nvidia proprietary drivers have never been installed. 
Version information gleaned from xorg.log:

Current Operating System: Linux kenaz 4.1.0-2-amd64 #1 SMP Debian 4.1.5-1
(2015-08-15) x86_64
xorg-server 2:1.17.2-1.1
Current version of pixman: 0.32.6
NOUVEAU driver Date:   Thu Aug 28 03:57:48 2014 +0200
[drm] nouveau interface version: 1.2.2

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #1 from Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org> ---
Created attachment 117821
  --> https://bugs.freedesktop.org/attachment.cgi?id=117821&action=edit
dmesg (crash)

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #2 from Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org> ---
Created attachment 117822
  --> https://bugs.freedesktop.org/attachment.cgi?id=117822&action=edit
dmesg (no crash)

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #3 from Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org> ---
Created attachment 117823
  --> https://bugs.freedesktop.org/attachment.cgi?id=117823&action=edit
xorg.log (crash)

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #4 from Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org> ---
Created attachment 117824
  --> https://bugs.freedesktop.org/attachment.cgi?id=117824&action=edit
xorg.log (no crash)

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #5 from Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org> ---
N.B. I have been unable to figure out whether or not any of the software
involved is actually the newest available whatever.  I'm happy to test newer
software, compiling it myself if necessary -- but I will need you to tell me
exactly what is out of date and where the newer version can be found, because
the various webpages that purport to explain this all contradict each other :-(

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #6 from Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org> ---
If there is one monitor connected to the HDMI port, and nothing connected to
DVI or VGA, the computer boots successfully.

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #7 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
errrr what?

[   12.163791] nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT
at 0x61d804 [ IBUS ]
[   26.237760] nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT
at 0x61a804 [ IBUS ]

That'd be PDISPLAY.SOR[0x3].PWR and PDISPLAY.DAC[0x1].DPMS_CTRL for those
following at home.

No idea what we're (not) doing to make those mmio reads fail. As they're
connected to "power", perhaps they're getting turned off for our convenience?
Not sure.

Perhaps it just doesn't have a SOR[3]/DAC[1]? Can you include your VBIOS,
perhaps there's something interesting in there? From a successful boot, grab
/sys/kernel/debug/dri/0/vbios.rom and upload it here.

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #8 from Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org> ---
Created attachment 117825
  --> https://bugs.freedesktop.org/attachment.cgi?id=117825&action=edit
vbios.rom

(In reply to Ilia Mirkin from comment #7)
> 
> No idea what we're (not) doing to make those mmio reads fail. As they're
> connected to "power", perhaps they're getting turned off for our
> convenience? Not sure.

Perhaps it *is* relevant, then, that when monitors are connected to VGA and
DVI, both are activated (in mirrored mode) by the BIOS, but when monitors are
connected to HDMI and DVI, *only* the HDMI-attached display is activated by the
BIOS.

> Perhaps it just doesn't have a SOR[3]/DAC[1]? Can you include your VBIOS,
> perhaps there's something interesting in there? From a successful boot, grab
> /sys/kernel/debug/dri/0/vbios.rom and upload it here.

Attached.

This computer is in my office, and I need to go home shortly, but I will be
able to do further experiments tomorrow morning.

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

--- Comment #9 from Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org> ---
Oh, one more thing: I do not have Windows on this computer at all, so I can't
tell you what it does in the same configuration.  Sorry.  (I can probably dig
up a Windows 7 install/recovery CD, though, if there's something useful I could
do with it that doesn't involve repartitioning ;-)

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[Bug 91705] [NVE7] GPU crash (read fault) on boot w/ DMI+HDMI outputs

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https://bugs.freedesktop.org/show_bug.cgi?id=91705

Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed:

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

--- Comment #10 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
-- GitLab Migration Automatic Message --

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