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[Qemu-devel] [PULL 10/10] docs: add multiseat.txt
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PULL 10/10] docs: add multiseat.txt |
Date: |
Mon, 26 May 2014 09:51:26 +0200 |
Howto on setting up multiseat for guests.
Signed-off-by: Gerd Hoffmann <address@hidden>
---
docs/multiseat.txt | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100644 docs/multiseat.txt
diff --git a/docs/multiseat.txt b/docs/multiseat.txt
new file mode 100644
index 0000000..a6c71dd
--- /dev/null
+++ b/docs/multiseat.txt
@@ -0,0 +1,76 @@
+
+multiseat howto (with some multihead coverage)
+==============================================
+
+host side
+---------
+
+First you must compile qemu with a user interface supporting
+multihead/multiseat and input event routing. Right now this list is
+pretty short: sdl2.
+
+ ./configure --enable-sdl --with-sdlabi=2.0
+
+
+Next put together the qemu command line:
+
+qemu -enable-kvm -usb $memory $disk $whatever \
+ -display sdl \
+ -vga std \
+ -device usb-tablet
+
+That is it for the first head, which will use the standard vga, the
+standard ps/2 keyboard (implicitly there) and the usb-tablet. Now the
+additional switches for the second head:
+
+ -device pci-bridge,addr=12.0,chassis_nr=2,id=head.2 \
+ -device secondary-vga,bus=head.2,addr=02.0,id=video.2 \
+ -device nec-usb-xhci,bus=head.2,addr=0f.0,id=usb.2 \
+ -device usb-kbd,bus=usb.2.0,port=1,display=video.2 \
+ -device usb-tablet,bus=usb.2.0,port=2,display=video.2
+
+This places a pci bridge in slot 12, connects a display adapter and
+xhci (usb) controller to the bridge. Then it adds a usb keyboard and
+usb mouse, both connected to the xhci and linked to the display.
+
+The "display=video2" sets up the input routing. Any input coming from
+the window which belongs to the video.2 display adapter will be routed
+to these input devices.
+
+
+guest side
+----------
+
+You need a pretty recent linux guest. systemd with loginctl. kernel
+3.14+ with CONFIG_DRM_BOCHS enabled. Fedora 20 will do. Must be
+fully updated for the new kernel though, i.e. the live iso doesn't cut
+it.
+
+Now we'll have to configure the guest. Boot and login. By default
+all devices belong to seat0. You can use "loginctl seat-status seat0"
+to list them all (and to get the sysfs paths for cut+paste). Now
+we'll go assign all pci devices connected the pci bridge in slot 12 to
+a new head:
+
+loginctl attach seat-qemu \
+ /sys/devices/pci0000:00/0000:00:12.0/0000:01:02.0/drm/card1
+loginctl attach seat-qemu \
+ /sys/devices/pci0000:00/0000:00:12.0/0000:01:02.0/graphics/fb1
+loginctl attach seat-qemu \
+ /sys/devices/pci0000:00/0000:00:12.0/0000:01:0f.0/usb2
+
+Use "loginctl seat-status seat-qemu" to check the result. It isn't
+needed to assign the usb devices to the head individually, assigning a
+usb (root) hub will automatically assign all usb devices connected to
+it too.
+
+BTW: loginctl writes udev rules to /etc/udev/rules.d to make these
+device assignments permanent, so you need to do this only once.
+
+Now simply restart gdm (rebooting will do too), and a login screen
+should show up on the second head.
+
+Enjoy!
+
+--
+Gerd Hoffmann <address@hidden>
--
1.8.3.1
- [Qemu-devel] [PULL 00/10] input: add event routing and multiseat support., Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 01/10] input (curses): mask keycodes to remove modifier bits, Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 05/10] input: switch hid keyboard to new input layer api., Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 04/10] input: keymap: add meta keys, Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 09/10] usb: add input routing support for tablet and keyboard, Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 02/10] input: add qemu_input_key_number_to_qcode, Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 07/10] input: bind devices and input routing, Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 08/10] sdl: pass key event source to input layer, Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 06/10] input: switch hid mouse and tablet to the new input layer api., Gerd Hoffmann, 2014/05/26
- [Qemu-devel] [PULL 10/10] docs: add multiseat.txt,
Gerd Hoffmann <=
- [Qemu-devel] [PULL 03/10] input: add name to input_event_key_number, Gerd Hoffmann, 2014/05/26
- Re: [Qemu-devel] [PULL 00/10] input: add event routing and multiseat support., Peter Maydell, 2014/05/28