Nouveau - Jan 2016 - [Bug 93563] New: Hack'n'Slash hangs with Nouveau driver

https://bugs.freedesktop.org/show_bug.cgi?id=93563

            Bug ID: 93563
           Summary: Hack'n'Slash hangs with Nouveau driver
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: spzakulec at gmail.com
        QA Contact: nouveau at lists.freedesktop.org

Created attachment 120767
  --> https://bugs.freedesktop.org/attachment.cgi?id=120767&action=edit
Dmesg from boot that includes playing Hack'n'Slash

Hack'n'Slash- (http://store.steampowered.com/app/246070/?snr=1_7_15__13)
freezes up & hangs very early in the game (once you get to the main map). 
This
only happens with the Nouveau driver- if you install the proprietary NVidia
driver (version doesn't seem to matter), the game works just fine.

Here's my system information:
HP Compaq 8510w laptop
Kubuntu 14.04
OpenGL renderer string: Gallium 0.4 on NV84
OpenGL version string: 3.0 Mesa 11.2.0-devel (git-b835255 2016-01-01
trusty-oibaf-ppa
Kernel: 3.13.0-49-generic
CPU: model name : Intel(R) Core(TM)2 Duo CPU     T7300  @ 2.00GHz
Graphics card:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation G84GLM [Quadro FX
570M] [10de:040c] (rev a1)

How to reproduce this:
Start a new game.
Finish the first room, and then go through the second room where you name your
sprite.
Once you try to leave that room, you'll be taken to the world map.

If you have an existing save game, you need to rewind to BobCave (where Bob is
the name of your sprite).

What happens:
The screen loads very slowly, the transition goes on for a very long time, and
almost every keyboard & mouse press is swallowed up- if you're patient,
you can
eventually get the game menu to show up by pressing Esc enough times, and then
going down to exit game.  You can also just Alt-Tab out and kill the game.
You can't really continue playing because of these issues.

What should happen:
You leave the cave, and you get a quick transition to the world map (maybe 2-3
seconds), and then you can move freely around the screen without any lag or
screen corruption.
I've attached my dmesg log which does have some Nouveau error messages from
when I was playing.

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--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
The error appears to indicate that you ran out of VRAM... nouveau handles this
in a less-than-graceful manner as you've observed. I would recommend trying
to
turn down graphics quality settings in the game if that's possible.

You might also try a more recent kernel, although it is unlikely to affect the
issue.

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--- Comment #2 from Steven Zakulec <spzakulec at gmail.com> ---
I just tested Hack'n'Slash with the Nvidia driver to be sure I
wasn't
remembering the wrong thing, and that it really did work with that driver.

With Nvidia's 340.96 driver, the game runs just fine, and gets past that
trouble spot without an issue.

Is there anything else I can do to help you figure out what's going on here,
and hopefully end up with the same behavior for both drivers??

Thanks!

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--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Yeah, I'm sure it works with blob drivers... they probably move some of the
resources to sysmem. Nouveau sadly doesn't support that right now. It just
hopes for the best, and when a submit fails, you end up with a ton of
additional errors due to things not being where they are supposed to be.

Making it more resilient to errors is on my list... better resource management
is too, but even further down =/

Your best bet for now is turning down some sort of quality knob so that the
game doesn't use as many resources. FWIW it does say it wants 512MB VRAM
while
you only have 256...

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GitLab Migration User <gitlab-migration at fdo.invalid> changed:

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

--- Comment #4 from GitLab Migration User <gitlab-migration at
fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1094.

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