From: Anthony Liguori <anthony@codemonkey.ws>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: xen-devel@lists.xensource.com,
"Daniel P. Berrange" <berrange@redhat.com>
Subject: Re: Re: [PATCH] qemu vnc updates
Date: Tue, 26 Feb 2008 11:29:44 -0600 [thread overview]
Message-ID: <47C44C88.2010205@codemonkey.ws> (raw)
In-Reply-To: <47C43FA0.60808@eu.citrix.com>
Stefano Stabellini wrote:
>
> I have just re-read the rfb protocol spec and it specifies quite
> clearly that framebuffer updates are sent in response to framebuffer
> update requests.
> However it is true that the server can collapse multiple requests in a
> single reply. It is also clear that the reply can come at any time.
>
> I have seen the linux vncviewer client breaking because of race
> conditions due to this problem.
You mean realvnc? The race condition is due to it's use of
SetPixelFormat. By slowing the updates, what you're really doing is
just working around that race condition. That's not a proper solution
though.
This goes away if you set the realvnc options so that it doesn't change
the pixel format from what the server specifies.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2008-02-26 17:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-26 11:24 [PATCH] qemu vnc updates Stefano Stabellini
2008-02-26 16:15 ` Anthony Liguori
2008-02-26 16:22 ` Daniel P. Berrange
2008-02-26 16:34 ` Stefano Stabellini
2008-02-26 17:29 ` Anthony Liguori [this message]
2008-02-26 17:56 ` Stefano Stabellini
2008-02-26 19:20 ` Anthony Liguori
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