[Bug 97614] New: occasional screen distortions with nouveau under 4.8.0-rc4+

[Bug 97614] New: occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

            Bug ID: 97614
           Summary: occasional screen distortions with nouveau under
                    4.8.0-rc4+
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

There are occasional screen distortions with nouveau and kernel 4.8.0-rc4+.
Have a look at the dmesg as well as the screenshots.

known bad: 9ca581b50dab6103183396852cc08e440fcda18e (see attached dmesg)
also bad: 593ee4edc51d99fadda9f6ee... (no dmesg available)
supposed to be good: v4.8.0-rc4 (as by the tag of 3eab887a55424...)

  The problem is hard to test for as the screen distortions only become visible
from time to time. Also, v4.8.0-rc4 has been tested with the plasma4 desktop
while 4.8.0-rc4+ versions have been tested with xfce4 so I can not tell with
100% certainty that the problem did not exist before.

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|Other                       |x86-64 (AMD64)
                 OS|All                         |Linux (All)

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #1 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
Created attachment 126245
  --> https://bugs.freedesktop.org/attachment.cgi?id=126245&action=edit
dmesg excerpt 'grep nouveau'

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #2 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
Created attachment 126246
  --> https://bugs.freedesktop.org/attachment.cgi?id=126246&action=edit
screenshot with a plain xfce4 desktop

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #3 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
Created attachment 126247
  --> https://bugs.freedesktop.org/attachment.cgi?id=126247&action=edit
screenshot2 with xfce4

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #4 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
  Note that in the second picture there should be two different images: one for
the iiyama X4071UHSU display and another one for the LVDS. What has happened is
that parts of the LVDS displayed image have become visible on the HDMI monitor
which is wrong (there is only one background image per monitor).

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #5 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
Created attachment 126283
  --> https://bugs.freedesktop.org/attachment.cgi?id=126283&action=edit
similar messages from nouveau - though without visible screen distortions

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #6 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
Created attachment 126372
  --> https://bugs.freedesktop.org/attachment.cgi?id=126372&action=edit
dmesg before crash

As it seems the same problems do also lead to more or less frequent crashes.

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #7 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
see also: https://bugzilla.kernel.org/show_bug.cgi?id=156261

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #8 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
  I have tested it back down to 4.8.0-rc2 and it showed that the problem does
also exist with 4.8.0-rc2.

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #9 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
Created attachment 126697
  --> https://bugs.freedesktop.org/attachment.cgi?id=126697&action=edit
newer dmesg with 4.8-rc7+

  The original page_not_present errors seem to have been resolved upstreams.
Now there are other dmesgg in the log. The screen distortions seem to have
improved but are not completely gone (linux commit
7d1e042314619115153a0f6f06e4552c09a50e13).

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #10 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
  While there are only occasional screen distortions with xfce KDE5 plasma
seems to fully break by these issues: see also
https://bugs.kde.org/show_bug.cgi?id=368275. Just tell me if you should need
more information; - tested with 4.8.0-rc7+.

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

--- Comment #11 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
Created attachment 129678
  --> https://bugs.freedesktop.org/attachment.cgi?id=129678&action=edit
current dmesg for 4.10.0-rc8+; no screen distortions - considered good

currently no such distortions with vanilla 4.10.0-rc8+; this has likely already
been resolved with 4.9.0+.

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> changed:

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

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> changed:

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

--- Comment #12 from Elmar Stellnberger <estellnb-7Km2I/eHSAQdnm+yROfE0A@public.gmane.org> ---
not all screen distortions have gone; you can just not see any major
distortions. Some screen content has just gotten warped on scrolling; another
time I had some black spots above the font with thunderbird.

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[Bug 97614] occasional screen distortions with nouveau under 4.8.0-rc4+

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https://bugs.freedesktop.org/show_bug.cgi?id=97614

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

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

--- Comment #13 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
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