30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
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From 61041d49b94236400e836b8ea518d3a064b95c4e Mon Sep 17 00:00:00 2001
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From: Leah Rowe <info@minifree.org>
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Date: Sat, 2 Mar 2024 23:00:09 +0000
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Subject: [PATCH 2/2] dell/optiplex_9020: Disable IOMMU by default
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Needed to make graphics cards work. Turning it on is
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recommended if only using iGPU, otherwise leave it off
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by default. The IOMMU is extremely buggy when a graphics
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card is used. Leaving it off by default will ensure that
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the default ROM images in Libreboot will work on any setup.
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Signed-off-by: Leah Rowe <info@minifree.org>
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---
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src/mainboard/dell/optiplex_9020/cmos.default | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/mainboard/dell/optiplex_9020/cmos.default b/src/mainboard/dell/optiplex_9020/cmos.default
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index 8253570f19..7bccc80e51 100644
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--- a/src/mainboard/dell/optiplex_9020/cmos.default
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+++ b/src/mainboard/dell/optiplex_9020/cmos.default
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@@ -2,4 +2,4 @@ boot_option=Fallback
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debug_level=Debug
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nmi=Disable
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power_on_after_fail=Disable
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-iommu=Enable
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+iommu=Disable
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--
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2.39.2
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