[Bug 53391] New: nouveau: wrong display output order

[Bug 53391] New: nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391

           Summary: nouveau: wrong display output order
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.8-rc6
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: stijn+bugs@linux-ipv6.be
        Regression: No


My graphics card is a Gainward GTX480
(http://www.gainward.com/main/vgapro.php?id=238). It has 2 DVI outputs, and 1
mini HDMI output. The DVI outputs are numbered on the card, with DVI 1 being
the closest to the PCIe slot, then DVI 2, and finally the mini HDMI.

My primary (left) monitor, is connected to DVI 1, my secondary (right) monitor
to DVI 2. When I boot the computer, the BIOS initializes and uses the monitor
on DVI 1. Grub is displayed on the primary monitor, and the kernel initially
outputs to the primary monitor as well.

However, as soon as the nouveau module is loaded, the primary monitor goes to
standby and the kernel now uses the secondary monitor (on DVI 2) as primary.
When X starts (no Xorg.conf file), it is also displayed on the secondary
monitor.

When using either efifb, vesafb or uvesafb, the monitor on DVI 1 is always the
primary monitor. X with nvidia.ko also uses DVI 1 as the primary display.
Finally, when booting Windows, the startup screen is also displayed on the
monitor connected to DVI 1.

Here comes the weird part: when I am in X, and run xrandr, it does show 3
connected devices: DVI-I-1, DVI-I-2, and HDMI-1, with DVI-I-2 being the only
active one. So it seems that in X, the output order is correct, but with
nouveaufb the DVI connectors are swapped.

I will attach the output of dmesg here. If anything else is needed, please let
me know and I'll be happy to add it.

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[Bug 53391] nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391





--- Comment #1 from Stijn Tintel <stijn+bugs@linux-ipv6.be>  2013-02-03 18:22:04 ---
Created an attachment (id=92501)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=92501)
dmesg

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[Bug 53391] nouveau: wrong display output order

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=53391


Marcin Slusarz <marcin.slusarz@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marcin.slusarz@gmail.com




--- Comment #2 from Marcin Slusarz <marcin.slusarz@gmail.com>  2013-02-09 16:46:42 ---
Can I see the output of "lspci -vn -d 10de:"?

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[Bug 53391] nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391





--- Comment #3 from Stijn Tintel <stijn+bugs@linux-ipv6.be>  2013-02-09 17:43:08 ---
Created an attachment (id=92791)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=92791)
Output of "lspci -vn -d 10de:" with nvidia.ko loaded

This is with nvidia.ko loaded, since I reverted back to the proprietary driver.
If you need it with nouveau loaded instead, let me know.

One more thing I noticed with the proprietary driver: xrandr shows DVI-I-0,
DVI-I-1, DVI-I-2, DVI-I-3, and HDMI-0, with DVI-I-2 being connector 1 and
DVI-I-3 connector 2 on the card.

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[Bug 53391] nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391





--- Comment #4 from Marcin Slusarz <marcin.slusarz@gmail.com>  2013-02-09 17:59:44 ---
Created an attachment (id=92801)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=92801)
quirk

Does it work correctly with this patch?

Can you check whether the same bug occurs with analog cables?
(In this case replace "if 0" with "if 1" and test it too).

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[Bug 53391] nouveau: wrong display output order

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--- Comment #5 from Stijn Tintel <stijn+bugs@linux-ipv6.be>  2013-02-09 19:00:44 ---
The patch seems to fix it for nouveaufb. When starting X I still see strange
behavior. When KDM starts, it is displayed on the correct monitor (the left
monitor on DVI connector 1 on the card). However, when I log into KDE, xrandr
says it is the monitor on DVI-I-2 that is connected. Maybe this needs a fix (an
bugreport) somewhere else?

I am unable to test with analog cables right now, as I am lacking DVI->VGA
convertors. I have one, and should be able to find a 2nd one somewhere, but
that will be for later. If you need any other info meanwhile ...

And thanks for looking into this!

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[Bug 53391] nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391





--- Comment #6 from Marcin Slusarz <marcin.slusarz@gmail.com>  2013-02-09 20:11:56 ---
Created an attachment (id=92811)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=92811)
quirk v2

This patch should give you "correct" output numbers (although it's a cosmetic
issue and should not matter).

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[Bug 53391] nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391





--- Comment #7 from Stijn Tintel <stijn+bugs@linux-ipv6.be>  2013-02-09 22:09:53 ---
The 2nd patch seems to give the same behaviour as the 1st patch. And I do not
entirely agree it is only a cosmetic issue.

With nvidia.ko, I use an Xorg.conf just with the Device section to have X use
the proprietary driver. There are no screen or serverlayout sections, and I let
kwin configure my monitors. With nouveau, I use no Xorg.conf at all, because X
autodetects the nouveau driver. The difference with the nouveau driver is that
even when I save the monitor layout in the KDE settings, when I log out and
back in, the settings are forgotten. I would call that a KDE/kwin bug, but this
does not happen with the proprietary driver.

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[Bug 53391] nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391





--- Comment #8 from Stijn Tintel <stijn+bugs@linux-ipv6.be>  2013-02-09 22:37:26 ---
Meanwhile I went up the attick to get me a 2nd DVI->VGA convertor.

With your 2nd patch applied without modifications, and using VGA cables, the
monitor on the right (DVI connector 2 on the card) is used by nouveaufb as soon
as it's loaded. This is wrong. In KDE and xrandr however it is recognized as
DVI-I-2, which seems correct.

With your 2nd patch, "#if 0" changed into "#if 1", and using VGA cables, the
monitor on the left (DVI connector 1 on the card) is used by nouveaufb as soon
as it's loaded. This is good. KDE and xrandr recognize it as DVI-I-2 though,
while it should be DVI-I-1.

Do you want me to test your first patch as well, with "#if 0" changed into "#if
1"?

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[Bug 53391] nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391





--- Comment #9 from Marcin Slusarz <marcin.slusarz@gmail.com>  2013-02-11 22:12:35 ---
Yes, please do it. I think it will fix all issues (both VGA and DVI setups will
work and output numbering will be correct).

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[Bug 53391] nouveau: wrong display output order

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https://bugzilla.kernel.org/show_bug.cgi?id=53391





--- Comment #10 from Stijn Tintel <stijn+bugs@linux-ipv6.be>  2013-02-12 12:54:22 ---
Unfortunately with the first patch and #if 0 -> #if 1 nouveau and X start on
the 2nd monitor again (with DVI cables). shall I test with vga cables again too
?

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[Bug 53391] nouveau: wrong display output order

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--- Comment #11 from Marcin Slusarz <marcin.slusarz@gmail.com>  2013-02-12 21:36:52 ---
Created an attachment (id=93171)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=93171)
quirk v3

maybe this one?

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[Bug 53391] nouveau: wrong display output order

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--- Comment #12 from Stijn Tintel <stijn+bugs@linux-ipv6.be>  2013-02-13 00:53:57 ---
Still not good, the 2nd monitor is initialized first, both by nouveaufb and X.
It is recognized as DVI-I-2 though.

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[Bug 53391] nouveau: wrong display output order

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Stijn Tintel (stijn+bugs@linux-ipv6.be) changed:

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

--- Comment #13 from Stijn Tintel (stijn+bugs@linux-ipv6.be) ---
Not sure if this is still an issue, and as I no longer own the card, I'll just
close this.

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