Adam Williamson
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From 8af4c8abfb59ab66f1f5a34f0eac1342e6f0c7e5 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Thu, 17 Oct 2019 12:37:12 +0200
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Subject: [PATCH] udev: tag any display devices as master-of-seat when
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nomodeset is used
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Fixes #13773. See also https://bugzilla.redhat.com/show_bug.cgi?id=1728240,
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https://github.com/sddm/sddm/issues/1204.
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When nomodeset is used on the kernel command line, there is no graphics
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device that the kernel knows, so we don't tag anything as master-of-seat,
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and seat0 has CanGraphical=no.
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$ loginctl seat-status seat0 ; loginctl show-seat seat0
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seat0
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Devices:
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├─/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
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│ input:input0 "Power Button"
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├─/sys/devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1
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│ usb:usb1
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│ └─/sys/devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-1/1-1:1.0/0003:0627:0001.0001/input/input4
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│ input:input4 "QEMU QEMU USB Tablet"
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├─/sys/devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb2
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│ usb:usb2
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├─/sys/devices/pci0000:00/0000:00:1b.0/sound/card0
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│ sound:card0 "Intel"
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├─/sys/devices/platform/i8042/serio0/input/input1
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│ input:input1 "AT Translated Set 2 keyboard"
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│ ├─/sys/devices/platform/i8042/serio0/input/input1/input1::capslock
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│ │ leds:input1::capslock
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│ ├─/sys/devices/platform/i8042/serio0/input/input1/input1::numlock
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│ │ leds:input1::numlock
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│ └─/sys/devices/platform/i8042/serio0/input/input1/input1::scrolllock
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│ leds:input1::scrolllock
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└─/sys/devices/platform/i8042/serio1/input/input3
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input:input3 "ImExPS/2 Generic Explorer Mouse"
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Id=seat0
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CanMultiSession=yes
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CanTTY=yes
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CanGraphical=no
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Sessions=
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IdleHint=yes
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IdleSinceHint=0
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IdleSinceHintMonotonic=0
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Let's tag the PCI device with "master-of-seat", so we get CanGraphical=yes, and "seat",
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so it is show as part of the seat:
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[fedora@f31-bios ~]$ loginctl seat-status seat0 ; loginctl show-seat seat0
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seat0
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Devices:
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├─/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
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│ input:input0 "Power Button"
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├─/sys/devices/pci0000:00/0000:00:01.0
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│ [MASTER] pci:0000:00:01.0
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├─/sys/devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1
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│ usb:usb1
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│ └─/sys/devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb1/1-1/1-1:1.0/0003:0627:0001.0001/input/input4
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│ input:input4 "QEMU QEMU USB Tablet"
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├─/sys/devices/pci0000:00/0000:00:02.1/0000:02:00.0/usb2
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│ usb:usb2
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├─/sys/devices/pci0000:00/0000:00:1b.0/sound/card0
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│ sound:card0 "Intel"
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├─/sys/devices/platform/i8042/serio0/input/input1
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│ input:input1 "AT Translated Set 2 keyboard"
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│ ├─/sys/devices/platform/i8042/serio0/input/input1/input1::capslock
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│ │ leds:input1::capslock
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│ ├─/sys/devices/platform/i8042/serio0/input/input1/input1::numlock
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│ │ leds:input1::numlock
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│ └─/sys/devices/platform/i8042/serio0/input/input1/input1::scrolllock
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│ leds:input1::scrolllock
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└─/sys/devices/platform/i8042/serio1/input/input3
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input:input3 "ImExPS/2 Generic Explorer Mouse"
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Id=seat0
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CanMultiSession=yes
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CanTTY=yes
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CanGraphical=yes
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Sessions=
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IdleHint=yes
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IdleSinceHint=0
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IdleSinceHintMonotonic=0
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---
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src/login/71-seat.rules.in | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/login/71-seat.rules.in b/src/login/71-seat.rules.in
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index 6010f048aef..2bbd18363e6 100644
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--- a/src/login/71-seat.rules.in
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+++ b/src/login/71-seat.rules.in
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@@ -24,6 +24,11 @@ SUBSYSTEM=="graphics", KERNEL=="fb[0-9]", DRIVERS=="hyperv_fb", TAG+="master-of-
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# Allow efifb / uvesafb to be a master if KMS is disabled
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SUBSYSTEM=="graphics", KERNEL=="fb[0-9]", IMPORT{cmdline}="nomodeset", TAG+="master-of-seat"
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+# Allow any PCI graphics device to be a master and synthesize a seat if KMS
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+# is disabled and the kernel doesn't have a driver that would work with this device.
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+SUBSYSTEM=="pci", ENV{ID_PCI_CLASS_FROM_DATABASE}=="Display controller", \
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+ ENV{DRIVER}=="", IMPORT{cmdline}="nomodeset", TAG+="seat", TAG+="master-of-seat"
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+
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SUBSYSTEM=="drm", KERNEL=="card[0-9]*", TAG+="seat", TAG+="master-of-seat"
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SUBSYSTEM=="usb", ATTR{bDeviceClass}=="09", TAG+="seat"
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10
systemd.spec
10
systemd.spec
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@ -15,7 +15,7 @@
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Name: systemd
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Url: https://www.freedesktop.org/wiki/Software/systemd
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Version: 243
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Release: 3%{?commit:.git%{shortcommit}}%{?dist}
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Release: 4%{?commit:.git%{shortcommit}}%{?dist}
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# For a breakdown of the licensing, see README
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License: LGPLv2+ and MIT and GPLv2+
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Summary: System and Service Manager
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@ -57,6 +57,11 @@ Patch0001: https://github.com/keszybz/systemd/commit/464a73411c13596a130a7a
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Patch0002: 0002-Revert-units-set-NoNewPrivileges-for-all-long-runnin.patch
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# https://bugzilla.redhat.com/show_bug.cgi?id=1728240
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# https://github.com/systemd/systemd/issues/13773
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# https://github.com/systemd/systemd/pull/13792
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Patch0003: 13792.patch
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Patch0998: 0998-resolved-create-etc-resolv.conf-symlink-at-runtime.patch
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%ifarch %{ix86} x86_64 aarch64
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@ -699,6 +704,9 @@ fi
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%files tests -f .file-list-tests
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%changelog
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* Fri Oct 18 2019 Adam Williamson <awilliam@redhat.com> - 243-4.gitef67743
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- Backport PR #13792 to fix nomodeset+BIOS CanGraphical bug (#1728240)
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* Thu Oct 10 2019 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> - 243-3.gitef67743
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- Various minor documentation and error message cleanups
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- Do not use cgroup v1 hierarchy in nspawn on groups v2 (#1756143)
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