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[Qemu-devel] [Bug 925405] Re: VNC server does not work with Mac Screen S
[Qemu-devel] [Bug 925405] Re: VNC server does not work with Mac Screen Sharing
Sun, 01 Jan 2017 10:23:48 -0000
QEMU 2.0 is not maintained by the QEMU project anymore. Can you please
try again with the latest release of QEMU (v2.8)? ... otherwise you
should report this to the bug tracker of your distro instead.
** Changed in: qemu
Status: New => Incomplete
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VNC server does not work with Mac Screen Sharing
Status in QEMU:
Status in Ubuntu:
When connecting to a QEMU instance from a Mac using any VNC settings
on the QEMU CLI and any target arch (ARM, Intel, etc.), the connection
is attempted but the negotiation never finishes.
I've verified this when building QEMU from source (1.0 and HEAD) on
Ubuntu, Fedora and Debian or when using Ubuntu (Oneiric) and Debian
It does not matter whether I specify authentication (or anything else)
on QEMU's side, the behavior is always the same - I see the connection
being established using netstat and tcpdump, but QEMU does not seem to
send back any pixmap data after the connection setup.
Best guess as to why this happens is that the VNC negotiation on QEMU
does not like the protocol version and VNC encoding sent by the Mac's
built-in VNC client, or that its negotiation logic is subtly broken. I
appreciate that it's not meant to be a full VNC server, but it
prevents me from using it remotely until a stable Mac build is
Mac OS X includes a VNC client called Screen Sharing that you can
invoke in two different ways:
* At a terminal, by typing "open vnc://hostname:tcp_port"
* From any URI-enabled field (such as the Safari URI field), where you can
just type the URI as vnc://hostname:tcp_port
Please do not confuse the enhanced VNC protocol Apple Remote Desktop
uses with Screen Sharing - they are not mutually exclusive, but they
are not incompatible either, since what Apple does is to negotiate
extra pixmap encoding and authentication options - I use Screen
Sharing to access many VNC servers such as vnc4server, tightvncserver,
vino, etc. without any issues whatsoever, so the issue I'm reporting
is not an issue with Apple's implementation.
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Thomas Huth <=