Nouveau - Apr 2010 - [Bug 27455] New: dualhead not working, second display always black

https://bugs.freedesktop.org/show_bug.cgi?id=27455

           Summary: dualhead not working, second display always black
           Product: xorg
           Version: unspecified
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: tcwardrobe at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=34667)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34667)
output of dmesg

Regardless of connected before booting or after, second display turns black as
soon as nouveau.ko is loaded (but it switches from standby to on when it
should). xrandr -q recognizes the second display correctly, xrandr --output
VGA-1 --auto == display on but black.
A sidenote, while watching a clip with mplayer and going fullscreen, the second
display switches from on to standby and on again every several seconds (between
10 and 30 seconds).
See dmesg attached.

ii  libdrm-nouveau1                      2.4.18-4                            
Userspace interface to nouveau-specific kernel DRM services -- runtime
ii  libdrm2                              2.4.18-4                            
Userspace interface to kernel DRM services -- runtime
ii  xserver-xorg-video-nouveau           1:0.0.15+git20100329+7858345-1      
X.Org X server -- Nouveau display driver (experimental)

Debian sid/experimental, kernel 2.6.32 (backported drm from 2.6.33)

01:00.0 VGA compatible controller [0300]: nVidia Corporation NV34M [GeForce FX
Go5200 32M/64M] [10de:0328] (rev a1)

regards
Michael

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--- Comment #1 from Francisco Jerez <currojerez at riseup.net> 2010-04-05
05:38:51 PDT ---
It would be useful if you grabbed a couple of register dumps (using this
program:[1]. Note that it depends on libpciaccess). The best would be if you
got me one from nouveau and another one from the blob, both using the same
outputs and same resolutions.

After turning the VGA output on (using xrandr with nouveau or
nvidia-settings+twinview with the blob), you just need to type:
# ./tvdump > dump.txt

Thanks.

[1] http://cgit.freedesktop.org/~currojerez/tvdump

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--- Comment #2 from Michael Schmitt <tcwardrobe at gmail.com> 2010-04-05
06:54:37 PDT ---
Created an attachment (id=34674)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34674)
dump after xrandr --output VGA-1 --auto with nouveau

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--- Comment #3 from Michael Schmitt <tcwardrobe at gmail.com> 2010-04-05
06:55:24 PDT ---
Created an attachment (id=34675)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34675)
dump after xrandr --output VGA-1 --off with nouveau

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--- Comment #4 from Michael Schmitt <tcwardrobe at gmail.com> 2010-04-05
06:58:27 PDT ---
The dumps are only with nouveau as somehow with the recent Xorg the nvidia blob
does not work anymore. I will investigate that, maybe I did something wrong or
a newer nvidia blob is now available that will work again.

regards
Michael

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--- Comment #5 from Michael Schmitt <tcwardrobe at gmail.com> 2010-04-05
08:50:49 PDT ---
As it seems for the time being I can't use the blob. I had never an issue
with
the driver as long as the driver was fine with kernel / xorg versions but this
time it puzzles me. Installation went fine, but as I try to start X (gdm) the
Nvidia logo shows for a second, then the shell again, then the logo again, then
shell and eventually a ncurses message pops up telling me that something went
wrong. But NO errors are shown in Xorg log.

So I assume even with the newest nvidia blob (173.14.25) for legacy NV34 chips,
a no-go with xorg 1.7.6.

regards
Michael

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--- Comment #6 from Michael Schmitt <mschmitt at unixkiste.org> 2010-04-12
07:54:32 PDT ---
Created an attachment (id=34912)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34912)
dump in singleuser mode

Sorry it took me so long to report back.

As asked on IRC I did run tvdump in singleusermode (no nouveau.ko loaded, no X
running). Two things I did notice there:

1.) (I guess directly related) when issued the tvdump command, the screen did
not refresh anymore from that point on. I could see the new prompt and type
"reboot" (which was shown as I typed it) but the blinking cursor was
one line
under it and no rebooting (changing runlevel, stopping bla, killing foo,
rebooting, ...) messages were printed on the screen, but the box did
successfully reboot. To investigate this (if tvdump did cause a segfault or
worse) I did start in singleuser mode again, ran tvdump without piping the
output to a file, and again no screerefresh, and as ctrl-alt-del did not reboot
the box after several 10s of seconds I did power it off (maybe too early...).
Anyway, dump is attached.

2.) (I am almost certain this is another bug and unrelated) As this time was
the first time I did reboot the box without playing around with nv vs. nvidia
vs. nouveau, in other words a complete "nouveau only session from bootup to
shutdown / reboot" I noticed what I have seen before (but before I did play
alot with the different graphic drivers so I thought that could happen). It
seems the graphic chip was left in a somewhat unclean state. The BIOS messages
and grub were utterly damaged and almost completely unreadable (I could glimpse
at least half of one kernel line in the grub menu). After a complete powerdown
all was well again.
Should I report this as a new bug? At least I did not find an existing bug
about a similar issue.

regards
Michael

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Bj?rge Solli <bjorge at solli.priv.no> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Platform|x86 (IA32)                  |All
                 CC|                            |bjorge at solli.priv.no

--- Comment #7 from Bj?rge Solli <bjorge at solli.priv.no> 2011-01-05
03:23:46 PST ---
I see this on x86_64 fedora 14 too.

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--- Comment #8 from Jarom?r C?p?k <jcapik at redhat.com> 2011-06-07
06:05:37 PDT ---
Hello guys.

We experienced a similar issue with the following card:

0f:00.0 VGA compatible controller: nVidia Corporation G96 [Quadro FX 380] (rev
a1) (prog-if 00 [VGA controller])

When we use 2 displays with resolution 1920x1080, then the second screen is
always black (led blinking -> off or no signal?) even if xrandr says that
both
monitors are on. What's strange ... It seems that both desktops are always
on
the same absolute position (even if we tried to set the position to
left-of/right-of/... or by specifying the coordinates)

The same result with combination of 1920x1080 and 1680x1050 ...

When we use 1 display with resolution 1680x1050 and second display with
resolution 1280x1024 (via DVI-I to DSUB converter), then dual head works
without problems.

Binary drivers can handle all combinations without problems, therefore it
doesn't look like a hardware limitation.

Attaching the xrandr output of the working combination:
--------------------------------------------------------
    Screen 0: minimum 320 x 200, current 2960 x 1050, maximum 8192 x 8192
    DVI-I-1 connected 1680x1050+1280+0 (normal left inverted right x axis y
axis) 459mm x 296mm
    1680x1050 59.9*+
    1280x1024 75.0 60.0
    1440x900 75.0 59.9
    1280x960 60.0
    1280x800 59.8
    1152x864 75.0
    1280x720 50.0 60.0
    1024x768 75.1 70.1 60.0
    832x624 74.6
    800x600 72.2 75.0 60.3 56.2
    720x576 50.0
    720x480 59.9
    640x480 72.8 75.0 66.7 60.0
    720x400 70.1
    DVI-I-2 connected 1280x1024+0+0 (normal left inverted right x axis y axis)
338mm x 270mm
    1280x1024 60.0*+ 75.0
    1152x864 75.0
    1024x768 75.1 60.0
    800x600 75.0 60.3
    640x480 75.0 60.0
    720x400 70.1 
--------------------------------------------------------

I'm willing to provide You with any debug information You need.

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--- Comment #9 from Jarom?r C?p?k <jcapik at redhat.com> 2011-06-07
12:55:34 PDT ---
Created an attachment (id=47681)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=47681)
tar.gz archive containing tvdump and xrandr outputs for blob and nouveau

The attached file contains the following files:
dump_1920x1080_1280x1024-blob.txt

dump_1920x1080_1280x1024-nouveau.txt

dump_1920x1080_1920x1080-blob.txt

dump_1920x1080_1920x1080-nouveau.txt

xrandr_1920x1080_1280x1024-blob.txt

xrandr_1920x1080_1280x1024-nouveau.txt

xrandr_1920x1080_1920x1080-blob.txt

xrandr_1920x1080_1920x1080-nouveau.txt


In both cases the second display was configured as right-of ...

As it was mentioned before ...
1920x1080_1280x1024 combination works with both drivers correctly
1920x1080_1920x1080 combination works with blob only

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--- Comment #10 from Ben Skeggs <skeggsb at gmail.com> 2011-06-07 15:33:54
PDT ---
(In reply to comment #9)
> Created an attachment (id=47681)
 -->
(https://bugs.freedesktop.org/attachment.cgi?id=47681)
> tar.gz archive containing tvdump and xrandr outputs for blob and nouveau
Thanks for grabbing these.  However.  The chipset you're reporting out has a
*completely* redesigned display engine and these dumps aren't useful for it.

Could you please file a separate bug report, as it's highly, highly unlikely
that it's related to this one.  Could you attach your dmesg output from
while
nouveau is running to it also.

Thanks!

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

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

--- Comment #11 from Emil Velikov <emil.l.velikov at gmail.com> 2011-06-18
06:55:44 PDT ---
No response from the reporter for more than a year. Closing.
If the problem still exists on current version, please reopen with new set of
logs.

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |

--- Comment #12 from Emil Velikov <emil.l.velikov at gmail.com> 2011-06-18
13:09:11 PDT ---
Should not have closed this bug
Apologies

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--- Comment #13 from Ge@@ru <geaaru at gmail.com> 2011-08-29 23:56:17 PDT
---
Hi,
i use a gentoo distribution and i see that after release of the nouveau kernel
driver v. 20110602 (with both kernel 3.x and 2.6.x) dual head doesn't work.
I have a NVIDIA Quadro FX 2800M.

01:00.0 VGA compatible controller: nVidia Corporation G92 [Quadro FX 2800M]
(rev a2

So, with version 20110801 and 20110820 there is a regression that doesn't
permit correct use of dual head.

Currently, i use xorg-server-1.10.3 (i try soon 1.11.0) but i don't think
that
problem is on xorg-server.

So,now i downgrade version on kernel module to 20110602 and all works fine.
Please, can you verify where is regression?

As x11 driver i use v. 0.0.16_pre20110323.

Thanks

P.S. If it is needed i will upgrade soon a dump of the xorg.log when dual head
doesn't work.

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--- Comment #14 from sep16 at psu.edu 2011-12-08 14:17:21 PST ---
I am experiencing this issue as well with dual DVI outputs.
 - XFX nVidia GeForce 9600GT w/ dual DVI-I outputs
 - dual NEC 2560x1600 monitors
 - xorg-server 1.11.2
 - nouveau 0.0.16_pre20111109
 - Gentoo amd64 linux-3.1.0

xrandr -q reports both monitors as detected and properly configured, and in
gnome-shell the desktop appears to extend to the second monitor -- I can drag
windows to it -- but the second monitor is always in standby mode.

I can attach any logs/dumps that you need to diagnose this if it would help.

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--- Comment #15 from Ben Skeggs <skeggsb at gmail.com> 2011-12-08 15:09:43
PST ---
(In reply to comment #14)
> I am experiencing this issue as well with dual DVI outputs.
>  - XFX nVidia GeForce 9600GT w/ dual DVI-I outputs
>  - dual NEC 2560x1600 monitors
>  - xorg-server 1.11.2
>  - nouveau 0.0.16_pre20111109
>  - Gentoo amd64 linux-3.1.0
> 
> xrandr -q reports both monitors as detected and properly configured, and in
> gnome-shell the desktop appears to extend to the second monitor -- I can
drag
> windows to it -- but the second monitor is always in standby mode.
> 
> I can attach any logs/dumps that you need to diagnose this if it would
help.
Yes, please.  But make it a new bug report, thank you :)

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--- Comment #16 from sep16 at psu.edu 2011-12-09 07:33:29 PST ---
(In reply to comment #15)
> (In reply to comment #14)
> > ...
> > I can attach any logs/dumps that you need to diagnose this if it would
help.
> 
> Yes, please.  But make it a new bug report, thank you :)
Bug report made:  https://bugs.freedesktop.org/show_bug.cgi?id=43668

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |INVALID

--- Comment #17 from Ilia Mirkin <imirkin at alum.mit.edu> ---
It appears that this bug report has laid dormant for quite a while. Sorry we
haven't gotten to it. Since we fix bugs all the time, chances are pretty
good
that your issue has been fixed with the latest software. Please give it a shot.
(Linux kernel 3.10.7, xf86-video-nouveau 1.0.9, mesa 9.1.6, or their git
versions.) If upgrading to the latest isn't an option for you, your
distro's
bugzilla is probably the right destination for your bug report.

In an effort to clean up our bug list, we're pre-emptively closing all bugs
that haven't seen updates since 2011. If the original issue remains, please
make sure to provide fresh info, see http://nouveau.freedesktop.org/wiki/Bugs/
for what we need to see, and re-open this one.

Thanks,

The Nouveau Team

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