[git pull] drm for 5.17-rc1 (pre-merge window pull)

Daniel Vetter daniel.vetter at ffwll.ch
Mon Jan 10 22:04:46 UTC 2022

On Mon, Jan 10, 2022 at 10:30 PM Linus Torvalds
<torvalds at linux-foundation.org> wrote:
> On Thu, Jan 6, 2022 at 10:12 PM Dave Airlie <airlied at gmail.com> wrote:
> >
> >   git://anongit.freedesktop.org/drm/drm tags/drm-next-2022-01-07
> Gaah. I merged things and it built cleanly, and I pushed it out.
> But then I actually *booted* it, and that's not pretty.
> It *works", but it's almost unusable because of random scanline
> flickering.  I'm not sure how to explain it, but it's as if there
> wasn't quite enough bandwidth on the scan-out, so you get these lines
> of noise and/or shifted output. They are temporary - so the
> framebuffer contents themselves is not damaged (although I don't know
> how the compositor works - maybe the problem happens before scanout).
> This is on the same Radeon device:
>    49:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
> [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev e7)
> with dual 4k monitors.
> Any idea?

Since Christian is mostly the compute/memory side, adding some display
folks for this.
Daniel Vetter
Software Engineer, Intel Corporation

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