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From ab9510df0b5f7bc29662804991729c6d6ee38b70 Mon Sep 17 00:00:00 2001
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From: Ray Strode <rstrode@redhat.com>
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Date: Thu, 12 Dec 2019 16:56:16 -0500
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Subject: [PATCH] data: only disable wayland on passthrough virt setups
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at the moment we disable wayland on all hybrid graphics setups,
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but most hybrid graphics setups work fine.
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The case we really care about is passthrough virt. in that case,
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wayland is a bad idea because:
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1) kernel crashes
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2) mutter provides no way to disable one of the cards, and will
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always use one as a secondary gpu
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This commit forces xorg in passthrough setups so the user can use
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an xorg.conf to turn one of the cards off.
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---
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data/61-gdm.rules.in | 9 +++++++--
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1 file changed, 7 insertions(+), 2 deletions(-)
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diff --git a/data/61-gdm.rules.in b/data/61-gdm.rules.in
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index fc2e3315c..f971224cf 100644
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--- a/data/61-gdm.rules.in
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+++ b/data/61-gdm.rules.in
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@@ -1,20 +1,25 @@
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# disable Wayland on Matrox chipsets
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ATTR{vendor}=="0x102b", ATTR{device}=="0x0522", RUN+="@libexecdir@/gdm-disable-wayland"
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ATTR{vendor}=="0x102b", ATTR{device}=="0x0524", RUN+="@libexecdir@/gdm-disable-wayland"
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ATTR{vendor}=="0x102b", ATTR{device}=="0x0530", RUN+="@libexecdir@/gdm-disable-wayland"
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ATTR{vendor}=="0x102b", ATTR{device}=="0x0532", RUN+="@libexecdir@/gdm-disable-wayland"
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ATTR{vendor}=="0x102b", ATTR{device}=="0x0533", RUN+="@libexecdir@/gdm-disable-wayland"
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ATTR{vendor}=="0x102b", ATTR{device}=="0x0534", RUN+="@libexecdir@/gdm-disable-wayland"
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ATTR{vendor}=="0x102b", ATTR{device}=="0x0536", RUN+="@libexecdir@/gdm-disable-wayland"
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ATTR{vendor}=="0x102b", ATTR{device}=="0x0538", RUN+="@libexecdir@/gdm-disable-wayland"
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# disable Wayland on aspeed chipsets
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ATTR{vendor}=="0x1a03", ATTR{device}=="0x2010", RUN+="@libexecdir@/gdm-disable-wayland"
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ATTR{vendor}=="0x1a03", ATTR{device}=="0x2000", RUN+="@libexecdir@/gdm-disable-wayland"
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# disable Wayland when using the proprietary nvidia driver
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DRIVER=="nvidia", RUN+="@libexecdir@/gdm-disable-wayland"
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-# disable Wayland on hybrid graphics setups for now
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-SUBSYSTEM=="drm", KERNEL=="card[1-9]*", RUN+="@libexecdir@/gdm-disable-wayland"
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+# disable Wayland on passthrough graphics setups for now (assumes passthrough if
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+# there is more than one card, and one of the cards is virt: cirrus, bochs, qxl)
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+ATTR{vendor}=="0x1013", ATTR{device}=="0x00b8", ATTR{subsystem_vendor}=="0x1af4", ATTR{subsystem_device}=="0x1100", ENV{GDM_HAS_VIRTUAL_GPU}="1"
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+ATTR{vendor}=="0x1b36", ATTR{device}=="0x0100", ENV{GDM_HAS_VIRTUAL_GPU}="1"
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+ATTR{vendor}=="0x1234", ATTR{device}=="0x1111", ENV{GDM_HAS_VIRTUAL_GPU}="1"
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+
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+SUBSYSTEM=="drm", KERNEL=="card[1-9]*", ENV{GDM_HAS_VIRTUAL_GPU}=="1", RUN+="@libexecdir@/gdm-disable-wayland"
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--
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2.21.0
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