[Bug 34179] New: Nouveau 3D driver: nv50_pc_emit.c:863 assertion error kills Compiz

[Bug 34179] New: Nouveau 3D driver: nv50_pc_emit.c:863 assertion error kills Compiz

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=34179

           Summary: Nouveau 3D driver: nv50_pc_emit.c:863 assertion error
                    kills Compiz
           Product: Mesa
           Version: 7.10
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: sense-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org


When you use the experimental Gallium3D driver of Nouveau to enable DRI, Compiz
will actually try to run, but it will be abort because of the following
assertion error:
"compiz: nv50_pc_emit.c:863: emit_flop: Assertion `STYPE(i, 0) == 0x09'
failed."

It seems that this only happens with PCI-E cards that have the NV50 chip.

There is an 'xorg.log' at <http://launchpadlibrarian.net/63209980/XorgLog.txt>.
An unprocessed stacktrace can be found at
<http://launchpadlibrarian.net/63209976/Stacktrace.txt>, the stacktrace
processed by Apport at <http://launchpadlibrarian.net/63321404/Stacktrace.txt>.
StacktraceTop:
 __kernel_vsyscall ()
 *__GI_raise (sig=6)
 *__GI_abort () at abort.c:59

This bug was originally reported by several people in Ubuntu on Launchpad, the
master bug report can be found at <https://launchpad.net/bugs/710588>. You can
find many more log files at this bug report, and attached to its duplicates.
If you need something specifically, please ask!

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[Bug 34179] Nouveau 3D driver: nv50_pc_emit.c:863 assertion error kills Compiz

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=34179

Sense Hofstede <sense-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://launchpad.net/bugs/
                   |                            |710588

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[Bug 34179] Nouveau 3D driver: nv50_pc_emit.c:863 assertion error kills Compiz

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=34179

--- Comment #1 from Omer Akram <om26er-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org> 2011-02-11 07:54:41 PST ---
Also to add this is used to work with mesa 7.9 the update to 7.10 broke things.

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[Bug 34179] Nouveau 3D driver: nv50_pc_emit.c:863 assertion error kills Compiz

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=34179

--- Comment #2 from Christopher James Halse Rogers <chalserogers-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2011-02-14 18:32:17 PST ---
This is fixed by the nv50 part of the commit:
commit 7401590dedf6f2abb1f0f0db988be90acb1fb84f
Author: Christoph Bumiller <e0425955-oe7qfRrRQffzPE21tAIdciO7C/xPubJB@public.gmane.org>
Date:   Mon Feb 7 14:54:17 2011 +0100

    nv50,nvc0: do not forget to apply sign mode to saved TGSI inputs

diff --git a/src/gallium/drivers/nv50/nv50_tgsi_to_nc.c
b/src/gallium/drivers/nv50/nv50_tgsi_to_nc.c
index d6b80c3..ce9300a 100644
--- a/src/gallium/drivers/nv50/nv50_tgsi_to_nc.c
+++ b/src/gallium/drivers/nv50/nv50_tgsi_to_nc.c
@@ -1130,7 +1130,7 @@ emit_fetch(struct bld_context *bld, const struct
tgsi_full_instruction *insn,
    case TGSI_FILE_INPUT:
       res = bld_saved_input(bld, idx, swz);
       if (res && (insn->Instruction.Opcode != TGSI_OPCODE_TXP))
-         return res;
+         break;

       res = new_value(bld->pc, bld->ti->input_file, type);
       res->reg.id = bld->ti->input_map[idx][swz];

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[Bug 34179] Nouveau 3D driver: nv50_pc_emit.c:863 assertion error kills Compiz

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=34179

--- Comment #3 from Christopher James Halse Rogers <chalserogers-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2011-02-14 18:39:20 PST ---
I've done a piglit run on my NV98 system against the 7.10 branch; this shows no
difference with or without the cherry-pick.  So this doesn't regress anything
obvious, but there's also clearly a piglit test to be written :).

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[Bug 34179] Nouveau 3D driver: nv50_pc_emit.c:863 assertion error kills Compiz

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https://bugs.freedesktop.org/show_bug.cgi?id=34179

Marcin Slusarz <marcin.slusarz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

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

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