Re: [Users] 2 virtual monitors for Fedora guest

David Mansfield <spice@xxxxxxxxxxxxx> · Thu, 10 Apr 2014 17:24:21 -0400

On 04/09/2014 07:15 AM, Itamar Heim wrote:
On 04/09/2014 01:57 PM, René Koch wrote:
On 04/09/2014 11:24 AM, René Koch wrote:
Thanks a lot for testing.
Too bad that multiple monitors didn't work for you, too.

I'll test RHEL next - maybe this works better then Fedora...

I just tested CentOS 6.5 with Gnome desktop and 2 monitors aren't
working, too.
I can see 3 vdagent processes running in CentOS...

adding spice-devel

I have just gotten multiple monitors working.  I have F20 guest, F20 
host, F20 client.  To get the multiple monitors working I had to:

1) disable qxl.ko module in guest  by adding "nomodeset" to the kernel 
boot command line in grub. This one makes a huge difference - thinks are 
completely unstable with qxl.ko

2) increase the "framebuffer" memory from 16MB to 32MB (1920x1200 
resolution x 32bpp x 2 monitors > 16MB ram) by adding:

  <qemu:commandline>
    <qemu:arg value='-global'/>
    <qemu:arg value='qxl-vga.vgamem_mb=32'/>
  </qemu:commandline>

(and don't forget to modify the top line of the xml to add the 
xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'

3) possibly necessary, increase the "ram" and "vram" :
  <model type='qxl' ram='131072' vram='131072' heads='1'/>

I have no idea if #3 is necessary, I did it before I found #2, and have 
stuck with it.

After this, using remote-viewer I can activate display 2 (after logging 
in) and pretty much everything works correctly.

I have been trying to get this configuration working for a LONG time and 
it's finally there.

Regards,
René

On 04/08/2014 09:25 PM, Gianluca Cecchi wrote:
Some prelimianry tests at my side.

oVirt 3.4 on fedora 19 AIO.
Datacenter and cluster configured as 3.4 level
Some packages on it
libvirt-1.1.3.2-1.fc19.x86_64
qemu-kvm-1.6.1-2.fc19.x86_64
vdsm-4.14.6-0.fc19.x86_64
spice-server-0.12.4-3.fc19.x86_64

guest is an updated Fedora 19 system configured based on blank
template and OS=Linux
and
xorg-x11-drv-qxl-0.1.1-3.fc19.x86_64
spice-vdagent-0.14.0-5.fc19.x86_64

Client is an updated Fedora 20 box with 
virt-viewer-0.6.0-1.fc20.x86_64

If I select the "Single PCI" checkbox in console options of guest and
connect from the Fedora 20 client I don't see at all an option in
remote-viewer to open a second display and no new display detected in
guest.
And lspci on guest indeed gives only one video controller.

BTW: what is this option for, apart the meaning?

If I deselect the "Single PCI" checkbox I get the "Display 2" option
in remote-viewer but it is greyed out.
No new monitor in "detect displays" of guest.

In this last situation I have on host this qem-kvm command line:
qemu     16664     1 48 21:04 ?        00:02:42
/usr/bin/qemu-system-x86_64 -machine accel=kvm -name f19 -S -machine
pc-1.0,accel=kvm,usb=off -cpu Opteron_G3 -m 2048 -realtime mlock=off
-smp 1,maxcpus=160,sockets=160,cores=1,threads=1 -uuid
55d8b95b-f420-4208-a2fb-5f370d05f5d8 -smbios
type=1,manufacturer=oVirt,product=oVirt
Node,version=19-8,serial=E0E1001E-8C00-002A-6F9A-90E6BAC9F1E1,uuid=55d8b95b-f420-4208-a2fb-5f370d05f5d8 

-no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/f19.monitor,server,nowait 

-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=2014-04-08T19:04:45,driftfix=slew -no-shutdown -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device
virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -device
usb-ccid,id=ccid0 -drive
if=none,id=drive-ide0-1-0,readonly=on,format=raw,serial= -device
ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive
file=/rhev/data-center/mnt/_data_DATA2/b24b94c7-5935-4940-9152-36ecd370ba7c/images/5e99a818-9fd1-47bb-99dc-50bd25374c2f/a2baa1e5-569f-4081-97a7-10ec2a20daab,if=none,id=drive-virtio-disk0,format=raw,serial=5e99a818-9fd1-47bb-99dc-50bd25374c2f,cache=none,werror=stop,rerror=stop,aio=threads 

-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 

-netdev tap,fd=28,id=hostnet0,vhost=on,vhostfd=29 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=00:1a:4a:a8:01:55,bus=pci.0,addr=0x3 

-chardev spicevmc,id=charsmartcard0,name=smartcard -device
ccid-card-passthru,chardev=charsmartcard0,id=smartcard0,bus=ccid0.0
-chardev
socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/55d8b95b-f420-4208-a2fb-5f370d05f5d8.com.redhat.rhevm.vdsm,server,nowait 

-device
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm 

-chardev
socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/55d8b95b-f420-4208-a2fb-5f370d05f5d8.org.qemu.guest_agent.0,server,nowait 

-device
virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=org.qemu.guest_agent.0 

-chardev spicevmc,id=charchannel2,name=vdagent -device
virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel2,id=channel2,name=com.redhat.spice.0 

-spice
tls-port=5901,addr=0,x509-dir=/etc/pki/vdsm/libvirt-spice,tls-channel=main,tls-channel=display,tls-channel=inputs,tls-channel=cursor,tls-channel=playback,tls-channel=record,tls-channel=smartcard,tls-channel=usbredir,seamless-migration=on 

-k en-us -device
qxl-vga,id=video0,ram_size=67108864,vram_size=33554432,bus=pci.0,addr=0x2 

-device
qxl,id=video1,ram_size=67108864,vram_size=33554432,bus=pci.0,addr=0x8
-device AC97,id=sound0,bus=pci.0,addr=0x4 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7

On guest:
[root@localhost ~]# lspci
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma]
(rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton
II]
00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE
[Natoma/Triton II]
00:01.2 USB controller: Intel Corporation 82371SB PIIX3 USB
[Natoma/Triton II] (rev 01)
00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
00:02.0 VGA compatible controller: Red Hat, Inc. QXL paravirtual
graphic card (rev 03)
00:03.0 Ethernet controller: Red Hat, Inc Virtio network device
00:04.0 Multimedia audio controller: Intel Corporation 82801AA AC'97
Audio Controller (rev 01)
00:05.0 Communication controller: Red Hat, Inc Virtio console
00:06.0 SCSI storage controller: Red Hat, Inc Virtio block device
00:07.0 RAM memory: Red Hat, Inc Virtio memory balloon
00:08.0 Display controller: Red Hat, Inc. QXL paravirtual graphic card
(rev 03)

See here Xorg.0.log generated on guest:
https://drive.google.com/file/d/0BwoPbcrMv8mvTm9VbE53ZmVKcVk/edit?usp=sharing 

In particular I see in it many:
[    64.234] (II) qxl(0): qxl_xf86crtc_resize: Placeholder resize
1024x768
[    87.280] qxl_surface_create: Bad bpp: 1 (1)
[    87.280] qxl_surface_create: Bad bpp: 1 (1)
[    87.949] qxl_surface_create: Bad bpp: 1 (1)
[   110.469] qxl_surface_create: Bad bpp: 1 (1)
[   110.478] qxl_surface_create: Bad bpp: 1 (1)
[   146.096] - 0th attempt
[   146.096] - OOM at 962 511 24 (= 1474746 bytes)
[   146.096] Cache contents:  null null null null null null null null
null null null null null null null null null null null null null null
null null null null null null null null null null null null null null
null null null null null null null null null null null null null null
1008  997 1007 1005 1018 1003 1009 1011 1001 1012 1019 1016 1006 1013
    total: 14
[   146.107] - 1th attempt
[   146.107] - OOM at 962 511 24 (= 1474746 bytes)

Gianluca

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