[Bug 54437] New: linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[Bug 54437] New: linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=54437

             Bug #: 54437
           Summary: linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes
                    when using accel
    Classification: Unclassified
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: 3rik.gm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Hello,

I've compiled linux-nouveau-3.6.0rc4 x86_64 (made a package for Arch). With
this, the system is stable for 1 minute. Then, when I run compiz, or
cairo-dock, it freezes..

Here are dmesg messages :

[    0.000000] Linux version 3.6.0-1-nouveau (bioman@pumpkin) (gcc version
4.7.1 20120721 (prerelease) (GCC) ) #1 SMP PREEMPT Sun Sep 2 22:33:28 CEST 2012
[    1.236259] fb: conflicting fb hw usage nouveaufb vs VESA VGA - removing
generic driver
[    1.237326] nouveau  [  DEVICE][0000:01:00.0] BOOT0  : 0x0c8000a1
[    1.237328] nouveau  [  DEVICE][0000:01:00.0] Chipset: GF110 (NVC8)
[    1.237329] nouveau  [  DEVICE][0000:01:00.0] Family : NVC0
[    1.238288] nouveau  [   VBIOS][0000:01:00.0] checking PRAMIN for image...
[    1.339740] nouveau  [   VBIOS][0000:01:00.0] ... appears to be valid
[    1.339741] nouveau  [   VBIOS][0000:01:00.0] using image from PRAMIN
[    1.339822] nouveau  [   VBIOS][0000:01:00.0] BIT signature found
[    1.339823] nouveau  [   VBIOS][0000:01:00.0] version 70.10.17.00
[    1.340038] nouveau  [     MXM][0000:01:00.0] no VBIOS data, nothing to do
[    1.362195] nouveau  [     PFB][0000:01:00.0] RAM type: GDDR5
[    1.362196] nouveau  [     PFB][0000:01:00.0] RAM size: 1536 MiB
[    1.378219] nouveau  [     DRM][0000:01:00.0] VRAM: 1536MiB
[    1.378221] nouveau  [     DRM][0000:01:00.0] GART: 512MiB
[    1.378224] nouveau  [     DRM][0000:01:00.0] BIT BIOS found
[    1.378226] nouveau  [     DRM][0000:01:00.0] Bios version 70.10.17.00
[    1.378229] nouveau  [     DRM][0000:01:00.0] TMDS table version 2.0
[    1.378231] nouveau  [     DRM][0000:01:00.0] DCB version 4.0
[    1.378233] nouveau  [     DRM][0000:01:00.0] DCB outp 00: 02000300 00000000
[    1.378235] nouveau  [     DRM][0000:01:00.0] DCB outp 01: 01000302 00020030
[    1.378237] nouveau  [     DRM][0000:01:00.0] DCB outp 02: 04011380 00000000
[    1.378239] nouveau  [     DRM][0000:01:00.0] DCB outp 03: 08011382 00020030
[    1.378241] nouveau  [     DRM][0000:01:00.0] DCB outp 04: 02022362 00020010
[    1.378243] nouveau  [     DRM][0000:01:00.0] DCB conn 00: 00001030
[    1.378246] nouveau  [     DRM][0000:01:00.0] DCB conn 01: 00010130
[    1.378248] nouveau  [     DRM][0000:01:00.0] DCB conn 02: 00002261
[    1.406991] nouveau  [     DRM][0000:01:00.0] 0 available performance
level(s)
[    1.406993] nouveau  [     DRM][0000:01:00.0] c: core 50MHz shader 101MHz
memory 135MHz voltage 963mV fanspeed 40%
[    1.421196] nouveau  [     DRM][0000:01:00.0] MM: using COPY0 for buffer
copies
[    1.713751] nouveau  [     DRM][0000:01:00.0] allocated 1920x1200 fb:
0x60000, bo ffff88031f77b400
[    1.713938] fbcon: nouveaufb (fb0) is primary device
[    1.741008] fb0: nouveaufb frame buffer device
[    1.741010] [drm] Initialized nouveau 1.1.0 20120801 for 0000:01:00.0 on
minor 0
[    1.741023] nouveau 0000:02:00.0: enabling device (0004 -> 0007)
[    1.741572] nouveau  [  DEVICE][0000:02:00.0] BOOT0  : 0x0c8000a1
[    1.741574] nouveau  [  DEVICE][0000:02:00.0] Chipset: GF110 (NVC8)
[    1.741576] nouveau  [  DEVICE][0000:02:00.0] Family : NVC0
[    1.742577] nouveau  [   VBIOS][0000:02:00.0] checking PRAMIN for image...
[    1.752297] nouveau  [   VBIOS][0000:02:00.0] ... signature not found
[    1.752300] nouveau  [   VBIOS][0000:02:00.0] checking PROM for image...
[    2.013316] nouveau  [   VBIOS][0000:02:00.0] ... appears to be valid
[    2.013318] nouveau  [   VBIOS][0000:02:00.0] using image from PROM
[    2.013401] nouveau  [   VBIOS][0000:02:00.0] BIT signature found
[    2.013403] nouveau  [   VBIOS][0000:02:00.0] version 70.10.17.00
[    2.013871] nouveau  [     MXM][0000:02:00.0] no VBIOS data, nothing to do
[    2.013886] nouveau  [ DEVINIT][0000:02:00.0] adaptor not initialised
[    2.013887] nouveau  [   VBIOS][0000:02:00.0] running init tables
[    2.123350] nouveau  [     PFB][0000:02:00.0] RAM type: GDDR5
[    2.123352] nouveau  [     PFB][0000:02:00.0] RAM size: 1536 MiB
[    2.139055] nouveau  [     DRM][0000:02:00.0] VRAM: 1536MiB
[    2.139056] nouveau  [     DRM][0000:02:00.0] GART: 512MiB
[    2.139057] nouveau  [     DRM][0000:02:00.0] BIT BIOS found
[    2.139059] nouveau  [     DRM][0000:02:00.0] Bios version 70.10.17.00
[    2.139060] nouveau  [     DRM][0000:02:00.0] TMDS table version 2.0
[    2.139061] nouveau  [     DRM][0000:02:00.0] DCB version 4.0
[    2.139062] nouveau  [     DRM][0000:02:00.0] DCB outp 00: 02000300 00000000
[    2.139063] nouveau  [     DRM][0000:02:00.0] DCB outp 01: 01000302 00020030
[    2.139064] nouveau  [     DRM][0000:02:00.0] DCB outp 02: 04011380 00000000
[    2.139065] nouveau  [     DRM][0000:02:00.0] DCB outp 03: 08011382 00020030
[    2.139066] nouveau  [     DRM][0000:02:00.0] DCB outp 04: 02022362 00020010
[    2.139067] nouveau  [     DRM][0000:02:00.0] DCB conn 00: 00001030
[    2.139068] nouveau  [     DRM][0000:02:00.0] DCB conn 01: 00010130
[    2.139069] nouveau  [     DRM][0000:02:00.0] DCB conn 02: 00002261
[    2.146174] nouveau  [     DRM][0000:02:00.0] 0 available performance
level(s)
[    2.146176] nouveau  [     DRM][0000:02:00.0] c: core 50MHz shader 101MHz
memory 135MHz voltage 963mV fanspeed 40%
[    2.160303] nouveau  [     DRM][0000:02:00.0] MM: using COPY0 for buffer
copies
[    2.468525] nouveau  [     DRM][0000:02:00.0] allocated 1024x768 fb:
0x60000, bo ffff88031ec1b800
[    2.468602] fb1: nouveaufb frame buffer device
[    2.468604] [drm] Initialized nouveau 1.1.0 20120801 for 0000:02:00.0 on
minor 1
[  293.317841] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x40000000
[  311.737359] nouveau E[   PFIFO][0000:01:00.0] read fault at 0x4294000000
[PT_NOT_PRESENT] from PGRAPH/CTXCTL on channel 0x005fcbb000
[  311.737368] nouveau W[   PFIFO][0000:01:00.0] unknown status 0x40000000
[  318.253976] nouveau E[     DRM][0000:01:00.0] GPU lockup - switching to
software fbcon
[  321.258010] nouveau E[     DRM][0000:01:00.0] failed to idle channel
0xcccc0001
[  323.258060] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
[  326.255500] nouveau E[     DRM][0000:01:00.0] failed to idle channel
0xcccc0000
[  326.257004] nouveau  [   PFIFO][0000:01:00.0] unknown status 0x00000100
[  328.255524] nouveau E[   PFIFO][0000:01:00.0] channel 1 kick timeout
[  328.257004] nouveau  [   PFIFO][0000:01:00.0] unknown status 0x00000100
[  330.255526] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
[  330.256872] nouveau ![   PFIFO][0000:01:00.0] unhandled status 0x00000001
[  332.549469] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
[  334.585660] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
[  347.004925] nouveau E[     DRM][0000:01:00.0] failed to idle channel
0xcccc0001
[  349.004914] nouveau E[   PFIFO][0000:01:00.0] channel 2 kick timeout
[  351.005021] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
[  354.004593] nouveau E[     DRM][0000:01:00.0] failed to idle channel
0xcccc0000
[  356.004823] nouveau E[   PFIFO][0000:01:00.0] channel 1 kick timeout
[  358.004887] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
[  360.284163] nouveau E[   PFIFO][0000:01:00.0] playlist update failed
[  362.320275] nouveau E[   PFIFO][0000:01:00.0] playlist update failed

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[Bug 54437] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #1 from Eric <3rik.gm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2012-09-03 17:23:55 UTC ---
Please,

Also fix those bugs for linux-nouveau 3.4.10

Best regards,

Eric

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[Bug 54437] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #2 from Eric <3rik.gm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Hello,

Using external GTX 580 firmware helped !

Eric

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[Bug 54437] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|medium                      |high

--- Comment #3 from Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
This bug persists.  I consider it to be a pretty serious bug, too.  Anyone with
an nvc8 card who runs Gnome or Unity will have the card freeze up in seconds,
although somewhat less frequently with KDE.  Running firefox will immediately
freeze the card.  Ubuntu and Fedora both ship their liveCDs to enable nouveau
by default and people cannot even run the installer for more than a minute, and
most will have no idea what went wrong.  Note that most nvc0 cards run just
fine... I even have a nvc4 on another computer that runs perfectly, it is nvc8
that specifically has this problem, which very few (if any?) devs seem to
posess.  Feel free to google "nouveau gtx 580" to see that this is hitting a
decent amount of people.

The card works just fine if using the extracted firmware, but this is a poor
solution.  I have been reading the various envytools/hwdocs on the fuc and been
trying to investigate this but I have hit a wall, this issue is just too
difficult for me to handle.  I am pretty sure the solution is to do whatever
Ben did to get the nvd7/nvd9 cards working, which looked like adding chipset
specific firmware data to the loading code, but I don't know nearly enough to
do this myself.  If anyone has some advice, please let me know, I would really
like to see this bug closed.

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[Bug 54437] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #4 from Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 84279
  --> https://bugs.freedesktop.org/attachment.cgi?id=84279&action=edit
kernel log of card freeze

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[Bug 54437] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #5 from Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 84280
  --> https://bugs.freedesktop.org/attachment.cgi?id=84280&action=edit
kernel log of card freeze

Another dmesg log of the freeze.  Note that the read fault is not always at the
same address.

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|linux-nouveau2.6            |[NVC8] linux-nouveau2.6
                   |(3.6.0-rc4) : GTX580 : Xorg |(3.6.0-rc4) : GTX580 : Xorg
                   |freezes when using accel    |freezes when using accel

--- Comment #6 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
Worth trying 3.11-rc6. A bunch of changes went into 3.11-rc1 related to
register setup on nvc0+ cards.

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #7 from Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
These logs are from the nouveau git after those changes hit.  I've been
tracking the git changes pretty carefully and they looked promising but alas,
didn't work.

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

Martin Peres <martin.peres-Iz16wY1oaNPLSKGbIzaifA@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |b.harrington-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org

--- Comment #8 from Martin Peres <martin.peres-Iz16wY1oaNPLSKGbIzaifA@public.gmane.org> ---
*** Bug 45517 has been marked as a duplicate of this bug. ***

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #9 from Leif Gruenwoldt <leifer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to comment #3)
> The card works just fine if using the extracted firmware

Can you elaborate on how to do that? This sounds like a better solution than
using the proprietary nvidia driver.

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #10 from Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
http://nouveau.freedesktop.org/wiki/NVC0_Firmware/

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

Leif Gruenwoldt <leifer-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugzilla.redhat.com
                   |                            |/show_bug.cgi?id=860477

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

Dmitriy <doityourselfteam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |doityourselfteam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

--- Comment #11 from Dmitriy <doityourselfteam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
*** Bug 81614 has been marked as a duplicate of this bug. ***

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #12 from Dmitriy <doityourselfteam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
This bug is affecting me also, see the last duplicated bug. Any progress in
fixing this? Maybe some help in testing (for ex.) required?

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

Dmitriy <doityourselfteam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://launchpad.net/bugs/
                   |                            |1039202

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #13 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to comment #12)
> This bug is affecting me also, see the last duplicated bug. Any progress in
> fixing this? Maybe some help in testing (for ex.) required?

It's a bit of a mystery unfortunately. Adding to the annoyance, Ben said that
it does work just fine on his NVC8, although he has the less powerful versions.
Could be something with high ROP/TPC/GPC counts not being handled. (Or multiple
PARTs?)

That might actually be an interesting experiment -- before loading nouveau,
mask out a bunch of the units and see if it helps. If it does, find the
"breaking" point.

This is the code that computes that stuff:

http://cgit.freedesktop.org/~darktama/nouveau/tree/nvkm/engine/graph/nvc0.c#n1330

    priv->rop_nr = (nv_rd32(priv, 0x409604) & 0x001f0000) >> 16;
    priv->gpc_nr =  nv_rd32(priv, 0x409604) & 0x0000001f;
    for (i = 0; i < priv->gpc_nr; i++) {
        priv->tpc_nr[i]  = nv_rd32(priv, GPC_UNIT(i, 0x2608));
        priv->tpc_total += priv->tpc_nr[i];
    }

Step 1: Print out the various values (i.e. number of ROPs, GPCs, and the
per-GPC TPC counts).
Step 2: Artificially lower them (to, e.g., 1) and see if it helps. If it does,
figure out which of the values matter and where the breaking points are.

If it doesn't help, perhaps the units need to be disabled a little harder, e.g.
by setting 0x22584/0x22588.

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #14 from Dmitriy <doityourselfteam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to comment #13)

> 
> It's a bit of a mystery unfortunately. Adding to the annoyance, Ben said
> that it does work just fine on his NVC8, although he has the less powerful
> versions. Could be something with high ROP/TPC/GPC counts not being handled.
> (Or multiple PARTs?)
> 
> That might actually be an interesting experiment -- before loading nouveau,
> mask out a bunch of the units and see if it helps. If it does, find the
> "breaking" point.
> 
> This is the code that computes that stuff:
> 
> http://cgit.freedesktop.org/~darktama/nouveau/tree/nvkm/engine/graph/nvc0.
> c#n1330
> 
> 	priv->rop_nr = (nv_rd32(priv, 0x409604) & 0x001f0000) >> 16;
> 	priv->gpc_nr =  nv_rd32(priv, 0x409604) & 0x0000001f;
> 	for (i = 0; i < priv->gpc_nr; i++) {
> 		priv->tpc_nr[i]  = nv_rd32(priv, GPC_UNIT(i, 0x2608));
> 		priv->tpc_total += priv->tpc_nr[i];
> 	}
> 
> Step 1: Print out the various values (i.e. number of ROPs, GPCs, and the
> per-GPC TPC counts).
> Step 2: Artificially lower them (to, e.g., 1) and see if it helps. If it
> does, figure out which of the values matter and where the breaking points
> are.
> 
> If it doesn't help, perhaps the units need to be disabled a little harder,
> e.g. by setting 0x22584/0x22588.

Can you describe more detailed what I need to do? I'm afraid I'm not so
advanced at this moment to understand everything in your comment. Maybe not in
comments but by e-mail doityourselfteam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #15 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
*** Bug 81614 has been marked as a duplicate of this bug. ***

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #16 from Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to comment #13)
> (In reply to comment #12)
> > This bug is affecting me also, see the last duplicated bug. Any progress in
> > fixing this? Maybe some help in testing (for ex.) required?
> 
> It's a bit of a mystery unfortunately. Adding to the annoyance, Ben said
> that it does work just fine on his NVC8, although he has the less powerful
> versions. Could be something with high ROP/TPC/GPC counts not being handled.
> (Or multiple PARTs?)
> 
> That might actually be an interesting experiment -- before loading nouveau,
> mask out a bunch of the units and see if it helps. If it does, find the
> "breaking" point.
> 
> This is the code that computes that stuff:
> 
> http://cgit.freedesktop.org/~darktama/nouveau/tree/nvkm/engine/graph/nvc0.
> c#n1330
> 
> 	priv->rop_nr = (nv_rd32(priv, 0x409604) & 0x001f0000) >> 16;
> 	priv->gpc_nr =  nv_rd32(priv, 0x409604) & 0x0000001f;
> 	for (i = 0; i < priv->gpc_nr; i++) {
> 		priv->tpc_nr[i]  = nv_rd32(priv, GPC_UNIT(i, 0x2608));
> 		priv->tpc_total += priv->tpc_nr[i];
> 	}
> 
> Step 1: Print out the various values (i.e. number of ROPs, GPCs, and the
> per-GPC TPC counts).
> Step 2: Artificially lower them (to, e.g., 1) and see if it helps. If it
> does, figure out which of the values matter and where the breaking points
> are.
> 
> If it doesn't help, perhaps the units need to be disabled a little harder,
> e.g. by setting 0x22584/0x22588.

Heres the printed out values:
[    3.185455] Rop nr: 6
[    3.185457] Gpc nr: 4
[    3.185460] Tpc nr for gpc 0: 4
[    3.185463] Tpc nr for gpc 1: 4
[    3.185466] Tpc nr for gpc 2: 4
[    3.185469] Tpc nr for gpc 3: 4

I tried setting them all to 1, the card freezes pretty much immediately after
logging into kwin (which is when I suspect opengl rendering starts), although
oddly enough there was no read fault in the dmesg.  I also tried setting them
all to 2, and it froze pretty quickly too, and the machine became completely
unrecoverable.  Note that I also tried using the blob firmware with all values
set to 2, so I think not having them at their natural amounts simply pisses the
card off.  Didn't try directly disabling stuff with 0x22584/0x22588, not
entirely sure where I would do that even.

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #17 from t.jp-Mmb7MZpHnFY@public.gmane.org ---
Created attachment 103833
  --> https://bugs.freedesktop.org/attachment.cgi?id=103833&action=edit
dmesg from GPU lockup

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

--- Comment #18 from t.jp-Mmb7MZpHnFY@public.gmane.org ---
I'm affected by this bug as well. Card is ASUS ENGTX580 DCII.

Distro: Arch Linux
X.Org: 1.16
mesa: 10.2.4
xf86-video-nouveau: 1.0.10

I have a Korean Monitor so there are some errors about missing EDID in the
dmesg, but even without an xorg.conf nouveau detected the 2560x1440 resolution
and Gnome 3 looked fine until it locked up.

The lockup happened, while I was typing a terminal in Gnome 3.12.2. Came out of
nowhere. I attached my dmesg log.

I rebooted and got another lockup very quickly but this time without the long
list of nouveau E[   PDISP] messages. Channel value is the same, but process is
Xorg.bin not mutter-launch.

read fault at 0x4391800000 [PT_NOT_PRESENT] from PGRAPH/CTXCTL on channel
0x005fb79000 [Xorg.bin[909]]

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[Bug 54437] [NVC8] linux-nouveau2.6 (3.6.0-rc4) : GTX580 : Xorg freezes when using accel

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https://bugs.freedesktop.org/show_bug.cgi?id=54437

Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

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

--- Comment #19 from Kelly Doran <kel.p.doran-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
My computer survived the night with the latest patchset that made it into 3.17,
so I am marking this as fixed.

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