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authorKai-Heng Feng <kai.heng.feng@canonical.com>2021-05-19 16:57:23 +0300
committerAlex Deucher <alexander.deucher@amd.com>2021-05-20 21:55:56 +0300
commit808a4ae5fa7dfba286a274e729e40522500c57fe (patch)
treea6e2ae697c8dc49a9f988ba7afb22b5ee8d4914b /Kconfig
parent3203e497eb769cdf3b2f835bdc92083fee2796a9 (diff)
downloadlinux-808a4ae5fa7dfba286a274e729e40522500c57fe.tar.xz
vgaarb: Use ACPI HID name to find integrated GPU
Commit 3d42f1ddc47a ("vgaarb: Keep adding VGA device in queue") assumes the first device is an integrated GPU. However, on AMD platforms an integrated GPU can have higher PCI device number than a discrete GPU. Integrated GPU on ACPI platform generally has _DOD and _DOS method, so use that as predicate to find integrated GPU. If the new strategy doesn't work, fallback to use the first device as boot VGA. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210519135723.525997-1-kai.heng.feng@canonical.com
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