Nouveau - Mar 2012 - [Bug 47556] New: nouveau driver can`t handle xrandr requests

https://bugs.freedesktop.org/show_bug.cgi?id=47556

             Bug #: 47556
           Summary: nouveau driver can`t handle xrandr requests
    Classification: Unclassified
           Product: xorg
           Version: 7.6 (2010.12)
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: estellnb at gmail.com
         QAContact: xorg-team at lists.x.org


Created attachment 58730
  --> https://bugs.freedesktop.org/attachment.cgi?id=58730
Xorg.0.log of crashed Xorg

If I try to position my main screen leftsides to my integrated screen nouveau
comes out on strike:

xrandr --output LVDS-1 --right-of VGA-1

  Previously it was showing garbage on the external screen but now with Xorg
7.6_1.10.4-201.1 and nouveau-0.0.16_20110720_b806e3f-34 it is just switching to
the text console (you can see it) and then crashing Xorg itself.

  A Xinerama setup with nouveau would be very fine for my working environment
(external screen + keyboard, at different resolution).

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--- Comment #1 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-20
02:16:31 PDT ---
Created attachment 58732
  --> https://bugs.freedesktop.org/attachment.cgi?id=58732
Xorg.0.log: external screen only, 1920x1200

Just setting the external screen to 1920x1200 gives an error as well:
# xrandr --output LVDS-1 --off
# xrandr --output VGA-1 --mode 1920x1200
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  149 (RANDR)
  Minor opcode of failed request:  7 (RRSetScreenSize)
  Serial number of failed request:  28
  Current serial number in output stream:  29

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #58730|application/x-trash         |text/plain
          mime type|                            |

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #58732|text/x-log                  |text/plain
          mime type|                            |

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--- Comment #2 from Emil Velikov <emil.l.velikov at gmail.com> 2012-03-20
12:42:39 PDT ---
Hi Elmar

Looking at your second log, I've noticed the following

The kernel is failing to allocate new buffer object, meaning that
either
* xf86-video-nouveau, is not requesting the correct format/size
* libdrm is not wise enough to forward the info to the kernel
or
* kernel is not aware about the specific format, etc

Can you please check if there is an updated packages from openSUSE - see bug
47288 comment 2


Thanks
Emil

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--- Comment #3 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-21
00:42:45 PDT ---
 By time this is the latest version. The only thing I can offer at the moment
is to run Xorg with -logverbose 7, trying to strace it or to setterm a higher
kernel reporting stage.

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--- Comment #4 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-21
08:04:16 PDT ---
 In deed, nouveau seems to have a problem in allocating video memory. I have
2GB main memory but however an Nvidia GForce 420 Go which uses to come with
32MB of dedicated video RAM like in most embedded systems. I can achieve a
resolution off up to 1280x1024 (1600x1200 does not work) with a proper
xorg.conf however not with desktop video effects. The desired setup as
supported by the proprietary driver is 1920x1200+1024x768, xinerama. Switching
DRI off doesn`t make a difference.

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--- Comment #5 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-21
08:06:05 PDT ---
Created attachment 58815
  --> https://bugs.freedesktop.org/attachment.cgi?id=58815
Xorg.0.log: xinerama configuration

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--- Comment #6 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-21
08:08:44 PDT ---
Created attachment 58817
  --> https://bugs.freedesktop.org/attachment.cgi?id=58817
Xorg.0.log: xinerama configuration (right one)

 Here come the test results for full xinerama setup including -logverbose 7,
strace & dmesg.

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--- Comment #7 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-21
08:09:32 PDT ---
Created attachment 58818
  --> https://bugs.freedesktop.org/attachment.cgi?id=58818
xorg.conf: xinerama setup

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--- Comment #8 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-21
08:10:15 PDT ---
Created attachment 58819
  --> https://bugs.freedesktop.org/attachment.cgi?id=58819
Xorg.strace: xinerama setup

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--- Comment #9 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-21
08:11:12 PDT ---
Created attachment 58820
  --> https://bugs.freedesktop.org/attachment.cgi?id=58820
Xorg.ltrace: xinerama setup

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--- Comment #10 from Elmar Stellnberger <estellnb at gmail.com> 2012-03-21
08:12:07 PDT ---
Created attachment 58821
  --> https://bugs.freedesktop.org/attachment.cgi?id=58821
Xorg.dmesg: xinerama setup

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Elmar Stellnberger <estellnb at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #58817|Xorg.0.log: xinerama        |Xorg.0.log: xinerama
        description|configuration (right one)   |setup(right one)

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|nouveau driver can`t handle |[NV17] nouveau driver can't
                   |xrandr requests             |handle xrandr requests

--- Comment #11 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Could you retest with more recent software? I think there have been a lot of
changes both to xf86-video-nouveau/libdrm and the kernel since you tested this.

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--- Comment #12 from Elmar Stellnberger <estellnb at elstel.org> ---
Well, I would have to reinstall on one of those machines ...

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--- Comment #13 from Ilia Mirkin <imirkin at alum.mit.edu> ---
You could also boot with, e.g., an Arch livecd/liveusb which is fairly
up-to-date.

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--- Comment #14 from Elmar Stellnberger <estellnb at elstel.org> ---
Well done!; it works with oS13.1_MS4,
xorg-x11-driver-video-nouveau-1.0.9-1.2.i586 for most practical purposes very
well. However by finally plugging xranding and unplugging different monitors I
did finally get an error on re-enabling the same screen with different
resolution (i.e. --off -right-of --mode newone). The error may or may not have
to do something with nouveau; see for the logs (using
xorg-x11-7.6_1-9.2.noarch, Xorg server 1.14.2, release date 2013-06-25).

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--- Comment #15 from Elmar Stellnberger <estellnb at elstel.org> ---
Created attachment 85551
  --> https://bugs.freedesktop.org/attachment.cgi?id=85551&action=edit
/var/log/messages (wild-xranding with different resolution)

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--- Comment #16 from Elmar Stellnberger <estellnb at elstel.org> ---
Created attachment 85552
  --> https://bugs.freedesktop.org/attachment.cgi?id=85552&action=edit
Xorg.0.log (wild xranding with different resolution)

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--- Comment #17 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Is it a persistent failure (i.e. do future commands that used to work before
start failing), or is it a "if I use this weird set of 75 arguments, it
fails"?
If the latter, what's exactly are the arguments?

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--- Comment #18 from Elmar Stellnberger <estellnb at elstel.org> ---
No, all further requests have failed from a certain xrandr command on. The
command looked very normal like this:
xrandr --output VGA-1 --right-of LVDS-1 --mode 800x6000
The only difference to commands issued before was the resolution (given here as
800x600; may have been 1024x768 or something else).

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[NV17] nouveau driver can't |[NV17] nouveau fails to
                   |handle xrandr requests      |handle/set resolutions over
                   |                            |certain size,
                   |                            |nouveau_bo_new() -ENOMEM

--- Comment #19 from Emil Velikov <emil.l.velikov at gmail.com> ---
Almost the same issue as originally, short on memory :'(

I admit some work on optimising such cases for low (gpu/vram) memory may be
needed, but I do not think it high up the priority list. Read - it's a most
likely a gem/ttm work than nouveau specific. Either way anyone is welcome to
give it a crack

Following the messages from xorg.log

drmmode_crtc_shadow_allocate >
nouveau_allocate_surface >
(libdrm) nouveau_bo_new >
(most likely) drmCommandWriteRead(dev->fd, DRM_NOUVEAU_GEM_NEW...) >
(kernel) nouveau_gem_ioctl_new >
(most likely) nouveau_gem_new >
chaos x)

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--- Comment #20 from Ilia Mirkin <imirkin at alum.mit.edu> ---
I noticed that the kernel you used in the last test was compiled with gcc 4.8.
Was libdrm also compiled with gcc 4.8? If so, please try it with libdrm-2.4.48
or later.

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--- Comment #21 from Elmar Stellnberger <estellnb at elstel.org> ---
It should be the same compiler as I used the default toolkit of the same
version of the distribution.

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--- Comment #22 from Elmar Stellnberger <estellnb at elstel.org> ---
This is likely still an issue with some older machines though testing it got
stuck because of a kernel s2ram bug:
http://mirror1.htu.tugraz.at/archlinux/iso/2015.11.01/archlinux-2015.11.01-dual.iso.
The notebook used to test this is still alive.

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Elmar Stellnberger <estellnb at elstel.org> changed:

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

--- Comment #23 from Elmar Stellnberger <estellnb at elstel.org> ---
Bug 70510 seems to be the newer candidate (pls. correct if I missed sth.).

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