[Bug 87469] New: Invisible cursor on Xorg (NV34)

[Bug 87469] New: Invisible cursor on Xorg (NV34)

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

            Bug ID: 87469
           Summary: Invisible cursor on Xorg (NV34)
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: frodriguez.developer-1ViLX0X+lBJBDgjK7y7TUQ@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Created attachment 111018
  --> https://bugs.freedesktop.org/attachment.cgi?id=111018&action=edit
dmesg

This started with kernel version 3.17.3. I can use the mouse but the cursor is
invisible.

I bisected the stable branch and the offending commit is
2a0a68a350d188451611a23c34e79cc8b52a16bb. My Xorg version is 1.16.2.901 (1.16.3
RC 1).

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[Bug 87469] Invisible cursor on Xorg (NV34)

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #1 from Fernando Rodriguez <frodriguez.developer-1ViLX0X+lBJBDgjK7y7TUQ@public.gmane.org> ---
Created attachment 111019
  --> https://bugs.freedesktop.org/attachment.cgi?id=111019&action=edit
Xorg log

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[Bug 87469] [NV34] Invisible cursor on Xorg

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Invisible cursor on Xorg    |[NV34] Invisible cursor on
                   |(NV34)                      |Xorg

--- Comment #2 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
That bisection seems unlikely... that commit unbroke agp boards. Probably
before then nouveau wasn't getting used properly at all and you were actually
getting the vesa driver or something.

Can you double-check the X log at the parent of the commit you identified?

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[Bug 87469] [NV34] Invisible cursor on Xorg

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #3 from Fernando Rodriguez <frodriguez.developer-1ViLX0X+lBJBDgjK7y7TUQ@public.gmane.org> ---
I will do that tomorrow just to double-check and post the Xorg log but I'm
pretty sure I've been using nouveau all along. Right now I'm running version
3.17.2 (the last release that worked) and the Xorg log shows that it's using
nouveau.

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[Bug 87469] [NV34] Invisible cursor on Xorg

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #4 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to Fernando Rodriguez from comment #3)
> I will do that tomorrow just to double-check and post the Xorg log but I'm
> pretty sure I've been using nouveau all along. Right now I'm running version
> 3.17.2 (the last release that worked) and the Xorg log shows that it's using
> nouveau.

Xorg log + dmesg from 3.17.2 would be fine.

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[Bug 87469] [NV34] Invisible cursor on Xorg

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #5 from Fernando Rodriguez <frodriguez.developer-1ViLX0X+lBJBDgjK7y7TUQ@public.gmane.org> ---
Created attachment 111026
  --> https://bugs.freedesktop.org/attachment.cgi?id=111026&action=edit
dmesg from 3.17.2

There you go.

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[Bug 87469] [NV34] Invisible cursor on Xorg

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #6 from Fernando Rodriguez <frodriguez.developer-1ViLX0X+lBJBDgjK7y7TUQ@public.gmane.org> ---
Created attachment 111027
  --> https://bugs.freedesktop.org/attachment.cgi?id=111027&action=edit
Xorg log 3.17.2

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[Bug 87469] [NV34] Invisible cursor on Xorg

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #7 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to Fernando Rodriguez from comment #6)
> Created attachment 111027 [details]
> Xorg log 3.17.2

As I suspected:

[    20.659] (EE) NOUVEAU(0): Error creating GPU channel: -13
[    20.659] (EE) NOUVEAU(0): Error initialising acceleration.  Falling back to
NoAccel

And in dmesg:

[   20.658982] nouveau E[  DEVICE][0000:01:00.0][0x80000080][ffff880076072c00]
failed to create 0x00000002, -13

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[Bug 87469] [NV34] Invisible cursor on Xorg

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #8 from Fernando Rodriguez <frodriguez.developer-1ViLX0X+lBJBDgjK7y7TUQ@public.gmane.org> ---
I see. So that commit fixed that bug and triggered another one? Does that means
that is falling back on vesa or it's still using nouveau to some extent without
acceleration? I tried using vesa before and IIRC some effects that work with
nouveau didn't worked with vesa.

Another symptom that I forgot to mention is that the only way I can stop kdm
when running a 3.17.3 (or greater) is with kill -9. I will post the logs after
it refuses to stop tomorrow.

I also just tried booting v3.17.3 and logged in to kde and switched the
compositor to OpenGL (which obviously never worked before on this machine).
When I did that all window decorations disappeared and Xorg seemed to freeze
but I was still able to switch to a VT. I immediately switched back to X it was
back on KDM so I guess it crashed kde and the cursor is not the only thing
broken.

Is there anything else I can do?

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[Bug 87469] [NV34] Invisible cursor on Xorg

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #9 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to Fernando Rodriguez from comment #8)
> I see. So that commit fixed that bug and triggered another one? Does that

An earlier commit broke AGP. That commit went into 3.17, I believe. The commit
you bisected to restored AGP.

Please test out kernel 4acfd707^ -- I think that was the commit that broke
things... maybe. If that still doesn't get you acceleration, just try 3.16.
Basically I'd like to figure out if there was a time when acceleration *and*
the cursor worked all at the same time, and if so, to figure out when that
broke.

> I also just tried booting v3.17.3 and logged in to kde and switched the
> compositor to OpenGL (which obviously never worked before on this machine).

The nv30 GL driver is pretty crappy, sorry. Especially for actual nv3x cards
(vs nv4x ones). Lots of ways to mess things up. Also note that this card was
released in 2003-2004 -- its hw capabilities (even with a hypothetical
well-written GL driver) won't be a good match for software written for 2014.

In any case, my recommendation is to tackle one issue at a time. Mouse cursor
trumps GL compositors in my mind. When that's resolved, you can file more bugs
for your other issues.

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[Bug 87469] [NV34] Invisible cursor on Xorg

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https://bugs.freedesktop.org/show_bug.cgi?id=87469

--- Comment #10 from Fernando Rodriguez <frodriguez.developer-1ViLX0X+lBJBDgjK7y7TUQ@public.gmane.org> ---
Thanks for the help. I got the cursor back, and for the first time in this
machine, acceleration is also working. The solution was to compile
amd64-agpgart as a module (not built-in). So unless you consider that a bug you
can close this bug. Btw, it also requires and SMP enabled kernel for me even
though it's a single core. If I disable SMP it hangs as soon as the module is
loaded.

I also compiled the VIA AGP driver as a module (which according to the
documentation for CONFIG_AGP_AMD64 is required) but apparently I don't need it
cause it's not getting loaded.

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[Bug 87469] [NV34] Invisible cursor on Xorg

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--- Comment #11 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
(In reply to Fernando Rodriguez from comment #10)
> Thanks for the help. I got the cursor back, and for the first time in this
> machine, acceleration is also working. The solution was to compile
> amd64-agpgart as a module (not built-in). So unless you consider that a bug
> you can close this bug. 

Hmmmm.... very odd. I have no idea why that would happen. Mind providing a boot
log with that? In your current 3.17.3 log it says:


[    0.449093] agpgart-amd64 0000:00:00.0: AGP 3.0 bridge
[    0.449104] agpgart-amd64 0000:00:00.0: putting AGP V3 device into 8x mode
[    0.449146] nouveau 0000:01:00.0: putting AGP V3 device into 8x mode
[    0.449222] [TTM] Zone  kernel: Available graphics memory: 1022436 kiB
[    0.449224] [TTM] Initializing pool allocator
[    0.449231] [TTM] Initializing DMA pool allocator
[    0.449250] nouveau  [     DRM] VRAM: 127 MiB
[    0.449252] nouveau  [     DRM] GART: 128 MiB

[Hm, that "available graphics memory" thing seems high... 1GB? Is that how much
system ram you have?]

> Btw, it also requires and SMP enabled kernel for me
> even though it's a single core. If I disable SMP it hangs as soon as the
> module is loaded.

Known issue. Patch available. Everyone keeps thinking someone else will merge
it.

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[Bug 87469] [NV34] Invisible cursor on Xorg

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Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed:

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

--- Comment #12 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
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