Bug 734816 - qemu should be compiled with --enable-vnc-png flag
Summary: qemu should be compiled with --enable-vnc-png flag
Alias: None
Product: Fedora
Classification: Fedora
Component: qemu
Version: 16
Hardware: All
OS: Unspecified
Target Milestone: ---
Assignee: Fedora Virtualization Maintainers
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2011-08-31 14:35 UTC by Antoine Mercadal
Modified: 2013-01-10 00:16 UTC (History)
15 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2012-06-17 15:00:41 UTC

Attachments (Terms of Use)

Description Antoine Mercadal 2011-08-31 14:35:36 UTC
Description of problem:
Qemu does not use tightPNG encoding

Version-Release number of selected component (if applicable):

Additional Info:

In order to correctly use noVNC with the maximal speed (http://github.com/kanaka/novnc), qemu needs to be compiled with --enable-vnc-png.

Is it possible to enable this ? (maybe it is on Fedora 16, in that case, my bad)

Comment 1 Fabian Deutsch 2012-01-29 20:46:26 UTC
anyone on this?

Comment 2 Fedora Admin XMLRPC Client 2012-03-15 17:53:24 UTC
This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.

Comment 3 Cole Robinson 2012-05-28 23:43:35 UTC
I don't want to enable a new code path for F15 since we are EOL in a month. Moving to F16.

Dan, I know you're familiar with the qemu VNC code, any reason we shouldn't --enable-vnc-png and/or --enable-vnc-jpeg?

Comment 4 Ruben Kerkhof 2012-06-07 14:50:02 UTC
I've had both of these options enabled (and --enable-vnc-thread) in my own build for months, and haven't noticed any issues. Now that we have NoVNC as part of Openstack, could we at least enable this in Rawhide?

Comment 5 Daniel Berrangé 2012-06-08 11:21:04 UTC
I see no problem with setting --enable-vnc-png and --enable-vnc-jpeg.

I'm not so sure about --enable-vnc-thread - we should probably ask upstream about this. If the VNC thread is stable & "better", then I think we should probably just suggest that upstream enable it permanently & remove the configure option. If it isn't stable or better, then we shouldn't enable it in Fedora.

Comment 6 Ruben Kerkhof 2012-06-08 20:28:01 UTC
Actually, it looks like qemu is already built with vnc png and jpeg support.
The addition of libpng-devel and libjpeg-devel as BuildRequires in qemu 2:1.0-6 took care of this. 

I agree with asking upstream to make the threaded VNC server the default.
I guess this bug can be closed?

Comment 7 Cole Robinson 2012-06-17 15:00:41 UTC
Closing per comment #6

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