[Bug 105530] Stuttering on Raven Ridge when TearFree is on

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105530

Michel Dänzer <michel at daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |harry.wentland at amd.com
           Assignee|xorg-driver-ati at lists.x.org |dri-devel at lists.freedesktop
                   |                            |.org
            Product|xorg                        |DRI
         QA Contact|xorg-team at lists.x.org       |
            Version|git                         |unspecified
          Component|Driver/AMDgpu               |DRM/AMDgpu

--- Comment #4 from Michel Dänzer <michel at daenzer.net> ---
(In reply to txtsd from comment #0)
> The stuttering is caused by enabling TearFree via xrandr.
> When on `auto`, there is no stuttering, but when enabled by setting it to
> `on`, there is intense stuttering noticeable when dragging windows around,
> but it's also very noticeable when just moving the mouse around on the
> desktop with no windows open.

Since HW cursor updates are always supposed to work without delay, and there is
no sign of an issue in the attached userspace information, this seems like a
kernel (DC?) issue.

In the amd-gfx mailing list thread, you said that this started on 2018-03-07.
Is that just when you enabled TearFree for the first time, or did this actually
not happen with older kernels?

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