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VNC and SDL/VGA simultaneously?

DISCUSSION Erik Rull 3 participants 5 messages Mar 9, 2011 – Sep 22, 2011 KVM

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Erik Rull

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#0 lore raw

Hi all,

is it possible to parameterize qemu in a way where the VNC port and the VGA output is available in parallel?

My system screen remains dark if I run it with the -vnc :0 option and vnc is unavailable when SDL/VGA is available.

Best regards,

Erik

#1 lore raw
Quoted 4 lines · Erik Rull

Hi all,

is it possible to parameterize qemu in a way where the VNC port and the VGA output is available in parallel?

Not really, though it should be possible to do it with some effort.

Quoted 2 lines

My system screen remains dark if I run it with the -vnc :0 option and vnc is unavailable when SDL/VGA is available.

What's your use case?

Signature · 1 line
error compiling committee.c: too many arguments to function
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#2 lore raw
Quoted 7 lines · Avi Kivity
Quoted 5 lines · Erik Rull

Hi all,

is it possible to parameterize qemu in a way where the VNC port and the VGA output is available in parallel?

Quoted 7 lines

Not really, though it should be possible to do it with some effort.

Quoted 3 lines

My system screen remains dark if I run it with the -vnc :0 option and vnc is unavailable when SDL/VGA is available.

What's your use case?

I want to make remote support possble for a guest system that has only a local network connection to the host and has a graphical console running where the operator works on. (So "real" VNC is not available to the rest of the world) It would also be okay if a switching between the VNC and the SDL/VGA would be possible at runtime so that the remote support can do the work and then switch back to the operators screen.

Best regards,

Erik

#3 lore raw

We tried before with both spice(QXL) and VNC enabled at the same time for the same VM. It works a little bit, I mean VNC session can hold some time. I use gtk-vnc and it looks like qemu vnc implementation sends some special packets and cause gtk-vnc broken.

BR
Bitman Zhou

Quoted 31 lines · 在 2011-03-10四的 20:15 +0100,Erik Rull写道:
Quoted 7 lines · Avi Kivity
Quoted 5 lines · Erik Rull

Hi all,

is it possible to parameterize qemu in a way where the VNC port and the VGA output is available in parallel?

Quoted 7 lines

Not really, though it should be possible to do it with some effort.

Quoted 3 lines

My system screen remains dark if I run it with the -vnc :0 option and vnc is unavailable when SDL/VGA is available.

What's your use case?

I want to make remote support possble for a guest system that has only a local network connection to the host and has a graphical console running where the operator works on. (So "real" VNC is not available to the rest of the world)
It would also be okay if a switching between the VNC and the SDL/VGA would be possible at runtime so that the remote support can do the work and then switch back to the operators screen.

Best regards,

Erik
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author
#4 lore raw

Hi all,

is there an update regarding simultaneous use of VNC and VGA output?

Thanks.

Best regards,

Erik

Quoted 47 lines · Bitman Zhou

We tried before with both spice(QXL) and VNC enabled at the same time for the same VM. It works a little bit, I mean VNC session can hold some time. I use gtk-vnc and it looks like qemu vnc implementation sends some special packets and cause gtk-vnc broken.

BR
Bitman Zhou

Quoted 24 lines · 在 2011-03-10四的 20:15 +0100,Erik Rull写道:
Quoted 7 lines · Avi Kivity
Quoted 5 lines · Erik Rull

Hi all,

is it possible to parameterize qemu in a way where the VNC port and the VGA output is available in parallel?

Quoted 7 lines

Not really, though it should be possible to do it with some effort.

Quoted 3 lines

My system screen remains dark if I run it with the -vnc :0 option and vnc is unavailable when SDL/VGA is available.

What's your use case?

I want to make remote support possble for a guest system that has only a local network connection to the host and has a graphical console running where the operator works on. (So "real" VNC is not available to the rest of the world)
It would also be okay if a switching between the VNC and the SDL/VGA would be possible at runtime so that the remote support can do the work and then switch back to the operators screen.

Quoted 7 lines

Best regards,

Erik
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