Nouveau - May 2010 - [Bug 28212] New: image corruption

https://bugs.freedesktop.org/show_bug.cgi?id=28212

           Summary: image corruption
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: d.okias at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=35795)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35795)
dolphin_screenshot

nvidia N96. 512M VRAM

https://bugs.freedesktop.org/show_bug.cgi?id=28212

okias <d.okias at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #35795|dolphin_screenshot          |firefox_screenshot
        description|                            |

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--- Comment #1 from okias <d.okias at gmail.com> 2010-05-22 05:54:29 PDT
---
Created an attachment (id=35796)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35796)
dolphin_screenshot

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--- Comment #2 from okias <d.okias at gmail.com> 2010-05-22 05:57:41 PDT
---
Created an attachment (id=35797)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=35797)
dmesg

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--- Comment #3 from Xavier <shiningxc at gmail.com> 2010-05-22 07:45:12
PDT ---
Using compiz ? If yes, does it affect the results ?

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--- Comment #4 from Martin Peres <martin.peres at ensi-bourges.fr>
2010-05-22 11:15:52 PDT ---
Xavier: This is the kind of corruption I also get. So there are at least three
of us having this issue.

My exams are almost over, next week, I'll be free to dig into this problem
once
for all (hopefuly).

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--- Comment #5 from Maarten Maathuis <madman2003 at gmail.com> 2010-05-22
13:47:20 PDT ---
This looks like a typical tiling corruption, the question is, where does it
happen?

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--- Comment #6 from Martin Peres <martin.peres at ensi-bourges.fr>
2010-05-23 02:05:50 PDT ---
okias: Can you try to activate the image preview in dolphin ?

If all you get is scrambled thumbnails, then, you have found a good way to
reproduce this issue.

Now, let's find what's happening.

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--- Comment #7 from okias <d.okias at gmail.com> 2010-05-23 14:56:45 PDT
---
In short: I don't have composite enabled and dolphin have previews enabled:
1a) enabled: in icon area (corrupted image)
1b) disable: normal mime icons
2) on right side - image is correct

it's 100% repeatable.

After while some others image (icons in systray, plasma widgets icons) gets
damaged.

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--- Comment #8 from Martin Peres <martin.peres at ensi-bourges.fr>
2010-05-24 03:40:13 PDT ---
Okias: OK, we have the exact same behaviour. That's great.

I'll try to work on it this week end, I'll keep you updated ;)

Xavier: To fix this issue, should I try to create a minimum test-case or should
I just dig into the source code and see if somewhere a memcpy is happening
where it should not (by adding some errorF everywhere near memcpy statements) ?

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--- Comment #9 from Xavier <shiningxc at gmail.com> 2010-05-24 04:14:55
PDT ---
Heh don't ask me, ask any of the people that actually have a clue like
Maarten
or others on IRC :)

Did you link this corruption with nouveau_exa_download_from_screen or
nouveau_exa_upload_to_screen that you mentioned several times ? The fallback to
memcpy-based transfer there ?

You could enable NOUVEAU_FALLBACK in nouveau_local.h , and then add a few
ErrorF or NOUVEAU_ERR in strategic places to see if you can link the
corruptions with some code path.
But I don't know if that's a good idea and approach to the problem.

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--- Comment #10 from Martin Peres <martin.peres at ensi-bourges.fr>
2010-05-24 04:36:29 PDT ---
No, the fallback is not happening here, sadly. The GART-based transfer always
succeed.

So, the problem is elsewhere. I'll drop a line on IRC to see if someone has
a
clue!

Thanks anyway :)

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--- Comment #11 from tearofadragon at googlemail.com 2010-07-12 05:04:52 PDT ---
Created an attachment (id=36964)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36964)
dmesg log

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--- Comment #12 from tearofadragon at googlemail.com 2010-07-12 05:08:00 PDT ---
Created an attachment (id=36965)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36965)
Xorg log

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--- Comment #13 from tearofadragon at googlemail.com 2010-07-12 05:09:55 PDT ---
Created an attachment (id=36966)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36966)
Messages output

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--- Comment #14 from tearofadragon at googlemail.com 2010-07-12 05:15:11 PDT ---
Hi! I'm having the same problem (while surfing the web / running KDE 4.4.5
or
everything else) and I tried running with drm.debug=1 nouveau.reg_debug=0x200
in my kernel options.

I've attached the dmesg / Xorg.log and messages output.

[messages contains an old boot before debug was enabled!]

I needed to gzip the messages output due to being 23 MB big...

I hope this helps. If there is anything else needed, just tell me what I should
do and I'll give my best.

lspci -v prints this:
01:00.0 VGA compatible controller: nVidia Corporation G96 [GeForce 9600M GS]
(rev a1) (prog-if 00 [VGA controller])
        Subsystem: Wistron Corp. Device 208c
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at f2000000 (32-bit, non-prefetchable) [size=16M]
        Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Memory at f0000000 (64-bit, non-prefetchable) [size=32M]
        I/O ports at 2000 [size=128]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: [60] Power Management version 3
        Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [78] Express Endpoint, MSI 00
        Capabilities: [b4] Vendor Specific Information: Len=14 <?>
        Capabilities: [100] Virtual Channel
        Capabilities: [128] Power Budgeting <?>
        Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024
<?>
        Kernel driver in use: nouveau
        Kernel modules: nouveau, nvidiafb

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--- Comment #15 from Arthur Titeica <arthur at psw.ro> 2010-08-22 02:46:36
PDT ---
With the latest xorg-edgers version (1.8.2 build 01.07) I have similar problems
(icons in taskbar, skype icon in tray, opera menus, all get corrupted).

Would it help if I upload additional logs?

lspci: 01:00.0 VGA compatible controller: nVidia Corporation G96 [GeForce 9600M
GT] (rev a1)

uname: Linux lhart 2.6.35.3-hartlite01 #1 SMP Sat Aug 21 09:00:29 EEST 2010
i686 GNU/Linux

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--- Comment #16 from Marcin Slusarz <marcin.slusarz at gmail.com>
2010-08-22 12:14:10 PDT ---
sounds like this:
http://lists.freedesktop.org/archives/nouveau/2010-August/006206.html

which is not nouveau bug :)
http://lists.freedesktop.org/archives/nouveau/2010-August/006213.html

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okias <d.okias at gmail.com> changed:

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

--- Comment #17 from okias <d.okias at gmail.com> 2010-12-29 04:13:35 PST
---
I guess it was fixed long time ago. I can't reproduce it, because I do not
have
nvidia laptop.

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