compiz assert failure: compiz: nv50_pc_emit.c:863: emit_flop: Assertion `STYPE(i, 0) == 0x09' failed.

[Omer Akram]

Binary package hint: compiz

today's daily build does not start unity with libgl1-mesa-dri-experimental installed. it worked fine with earlier isos I tried

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.2.1+glibmainloop4-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic i686
Architecture: i386
AssertionMessage: compiz: nv50_pc_emit.c:863: emit_flop: Assertion `STYPE(i, 0) == 0x09' failed.
CrashCounter: 1
Date: Mon Jan 31 10:56:08 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard: Subsystem: Device [19f1:0a76]
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110131)
Lsusb:
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=(loop)/casper/vmlinuz boot=casper iso-scan/filename=/home/om26er/Documents/natty-desktop-i386.iso noprompt noeject
Signal: 6
SourcePackage: compiz
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/libc.so.6
 abort () from /lib/libc.so.6
 __assert_fail () from /lib/libc.so.6
 ?? () from /usr/lib/dri/nouveau_dri.so
Title: compiz assert failure: compiz: nv50_pc_emit.c:863: emit_flop: Assertion `STYPE(i, 0) == 0x09' failed.
UnitySupportTest:

UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors: (nautilus:3965): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
dmi.bios.date: 11/06/2009
dmi.bios.vendor: Intel Corp.
dmi.bios.version: RQG4110H.86A.0012.2009.1106.1345
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DG41RQ
dmi.board.vendor: Intel Corporation
dmi.board.version: AAE54511-201
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrRQG4110H.86A.0012.2009.1106.1345:bd11/06/2009:svn:pn:pvr:rvnIntelCorporation:rnDG41RQ:rvrAAE54511-201:cvn:ct3:cvr:
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
version.xserver-xorg: xserver-xorg 1:7.5+6ubuntu8
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.2+git20110124.fadee040-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu1

[Omer Akram (om26er)]

normal compiz works fine the crash happens when unity is enabled, but it used to work 2days old daily build

[Apport retracing service (apport)]

StacktraceTop:
 __kernel_vsyscall ()
 *__GI_raise (sig=6)
 *__GI_abort () at abort.c:59

[Doug McMahon (mc3man)]

just to add - this is also seen with nvidia hardware though the break here occurred before the X* updates, most likely with recent updates to compiz/unity/nux
So no unity/nvidia support on A2 at all.

[Doug McMahon (mc3man)]

As a small note - Using an AGP card (nvidia 7800) the current compiz, unity, Xserver,, work, pce-i cards return the noted error
(others have also reported success w/ 6000 series AGP cards

[Sense Egbert Hofstede (sense)]

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!

[Omer Akram (om26er)]

Also to add this is used to work with mesa 7.9 the update to 7.10 broke things.

[Sense Egbert Hofstede (sense)]

I can confirm this bug on an up-to-date installation of natty—I just marked my own bug #717164 a duplicate of this—with a PCI-E Nvidia Geforce 9600GT (the Asus EN9600GT).
The assertion error is exactly the same for me.

[Chris Halse Rogers (raof)]

I've found the commit which fixes this, and should push the patch shortly.

[Chris Halse Rogers (raof)]

This is fixed by the nv50 part of the commit:
commit 7401590dedf6f2abb1f0f0db988be90acb1fb84f
Author: Christoph Bumiller <email address hidden>
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];

[Chris Halse Rogers (raof)]

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 :).

[Doug McMahon (mc3man)]

have tried the commit here, seems to be ok, unity loaded up and is working.
nvidia 8600m - hardware as shown in bug #712005
only installed the experimental package from rebuild.

[Launchpad Janitor (janitor)]

This bug was fixed in the package mesa - 7.10.1~git20110215.cc1636b6-0ubuntu1

---------------
mesa (7.10.1~git20110215.cc1636b6-0ubuntu1) natty; urgency=low

  * Merge from Debian. Remaining Ubuntu changes:
   - debian/control
      + Drop lesstif-dev from Build-Depends; it's in Universe.
      + Comment out GLw libs since it depends on lesstif-dev.
      + Drop i686 swx11 libgl package.
      + Add libdrm-dev to mesa-common-dev Depends.
      + Drop [linux-any] qualifier from libudev-dev to fix pbuilder FTBFS
        (see deb bug 600823)
    - debian/rules
      + Use --disable-glw for swx11 targets too.
      + Don't enable motif for swx11 targets.
      + Use lzma compression for binary debs to save CD space.
      + Drop unloved mach64 driver.
      + Install both r300/r300g and r600/r600g
    - debian/patches
      + 100_no_abi_tag.patch
      + 101_ubuntu_hidden_glname.patch
      + 103_savage-expose_fbmodes_with_nonzero_alpha.patch
    - rules, libgl1-mesa-{glx,dev,swx11,swx11-dev}.install,
      libgl1-mesa-{glx,swx11}.{postinst,prerm}, libgl1-mesa-dev.links:
      Install libGL.so* in /usr/lib/mesa to allow things to work with
      alternatives.
    - debian/gbp.conf
      + Point at Ubuntu branch to make git-buildpackage less narky.
    - debian/patches/105_use_shared_libdricore.patch, debian/rules:
      + Link DRI drivers against shared dricore routines to save CD space.
    - debian/patches/109_fix_length_of_glxgetfbconfigssgix.patch:
      Fix "BadLength (poly request too large or internal Xlib length"
      when using non-C, non-en locales. (LP 714280)
    - debian/patches/108_fix_leaks_dri2_screen_creation.patch: Cherrypick
      to fix some leaks in DRI2 screen creation failure paths.
  * New upstream snapshot from 7.10 release branch.
  * debian/patches/10_fix_talloc_linking.diff:
    - Drop. Upstream has replaced talloc with an in-tree replacement
  * debian/patches/105_use_shared_libdricore.patch:
    - Refresh for talloc-dropping buildsystem changes.
  * debian/patches/107_winsys_buffer_nullptr.patch:
    - Drop. Included upstream.
  * debian/patches/110_nv50_fix_tgsi_sign_mode.diff:
    - Cherry-pick from master. Fixes assert hit by Unity on nv5x hardware
      (LP: #710588)
  * debian/control:
    - Drop no-longer-used libtalloc-dev build-dependency.
  * debian/not-installed:
    - Remove i686 files from not-installed list; we don't build the i686 swx11
      packages.
 -- Christopher James Halse Rogers <email address hidden> Wed, 16 Feb 2011 10:37:07 +1100