From: Joerg Roedel <joro@8bytes.org>
To: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: Alex Deucher <alexander.deucher@amd.com>,
"open list:AMD IOMMU (AMD-VI)" <iommu@lists.linux-foundation.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3] iommu/amd: Disable IOMMU on Stoney Ridge systems
Date: Wed, 19 Feb 2020 11:09:13 +0100 [thread overview]
Message-ID: <20200219100913.GA1961@8bytes.org> (raw)
In-Reply-To: <20200210075115.14838-1-kai.heng.feng@canonical.com>
On Mon, Feb 10, 2020 at 03:51:15PM +0800, Kai-Heng Feng wrote:
> Serious screen flickering when Stoney Ridge outputs to a 4K monitor.
>
> Use identity-mapping and PCI ATS doesn't help this issue.
>
> According to Alex Deucher, IOMMU isn't enabled on Windows, so let's do
> the same here to avoid screen flickering on 4K monitor.
>
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Bug: https://gitlab.freedesktop.org/drm/amd/issues/961
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Applied, thanks.
prev parent reply other threads:[~2020-02-19 10:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-10 7:51 Kai-Heng Feng
2020-02-10 15:16 ` Deucher, Alexander
2020-02-19 10:09 ` Joerg Roedel [this message]
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