NAK[B]: [SRU] [B/E/F/Unstable] [PATCH 0/1] Fix AMD Stoney Ridge screen flickering under 4K resolution
kleber.souza at canonical.com
Fri Mar 13 12:57:42 UTC 2020
On 20.02.20 09:37, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1864005
> Screen flickering/tearing when AMD Stoney Ridge outputs to 4K display.
> Disable IOMMU on Stoney Ridge.
> Connect to 4K screen through DP or HDMI. Heavy flickering/tearing can be
> The flickering/tearing is gone once the patch is applied.
> [Regression Potential]
> Low. This fix limits to one specific SoC.
> According to AMD, IOMMU isn't enabled for this SoC under Windows.
> So it's expected behavior.
> Kai-Heng Feng (1):
> iommu/amd: Disable IOMMU on Stoney Ridge systems
> drivers/iommu/amd_iommu_init.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
NAK'ing Bionic per Kai-Heng's comment.
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