diff options
Diffstat (limited to 'config/coreboot/haswell/patches/0022-dell-optiplex_9020-Disable-IOMMU-by-default.patch')
| -rw-r--r-- | config/coreboot/haswell/patches/0022-dell-optiplex_9020-Disable-IOMMU-by-default.patch | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/config/coreboot/haswell/patches/0022-dell-optiplex_9020-Disable-IOMMU-by-default.patch b/config/coreboot/haswell/patches/0022-dell-optiplex_9020-Disable-IOMMU-by-default.patch new file mode 100644 index 00000000..fbb40293 --- /dev/null +++ b/config/coreboot/haswell/patches/0022-dell-optiplex_9020-Disable-IOMMU-by-default.patch @@ -0,0 +1,29 @@ +From 153ca1a43c2c978fa2b2b82d988b0f838953cfb9 Mon Sep 17 00:00:00 2001 +From: Leah Rowe <info@minifree.org> +Date: Sat, 2 Mar 2024 23:00:09 +0000 +Subject: [PATCH 2/4] dell/optiplex_9020: Disable IOMMU by default + +Needed to make graphics cards work. Turning it on is +recommended if only using iGPU, otherwise leave it off +by default. The IOMMU is extremely buggy when a graphics +card is used. Leaving it off by default will ensure that +the default ROM images in Libreboot will work on any setup. + +Signed-off-by: Leah Rowe <info@minifree.org> +--- + src/mainboard/dell/optiplex_9020/cmos.default | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/src/mainboard/dell/optiplex_9020/cmos.default b/src/mainboard/dell/optiplex_9020/cmos.default +index c974022472..a0acd7b6bb 100644 +--- a/src/mainboard/dell/optiplex_9020/cmos.default ++++ b/src/mainboard/dell/optiplex_9020/cmos.default +@@ -3,4 +3,4 @@ boot_option=Fallback + debug_level=Debug + nmi=Disable + power_on_after_fail=Disable +-iommu=Enable ++iommu=Disable +-- +2.39.2 + |