Libvncserver cannot cope with a single 8K screen or dual 4K screens etc.

The problem is that the value of UPDATE_BUF_SIZE defined in rfb.h is too
small.

See https://github.com/LibVNC/libvncserver/issues/521

It would be great if this could be fixed in Debian without waiting for a new
release. The fix is simple and doesn’t seem to cause problems: the amount of
memory required is modest and is a one-off cost per client connection.

We believe that the bug you reported is fixed in the latest version of
libvncserver, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1010449@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Mike Gabriel <sunweaver@debian.org> (supplier of updated libvncserver package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Fri, 03 Jun 2022 09:47:24 +0200
Source: libvncserver
Architecture: source
Version: 0.9.13+dfsg-4
Distribution: unstable
Urgency: medium
Maintainer: Debian Remote Maintainers <debian-remote@lists.debian.org>
Changed-By: Mike Gabriel <sunweaver@debian.org>
Closes: 1010449
Changes:
 libvncserver (0.9.13+dfsg-4) unstable; urgency=medium
 .
   * debian/patches:
     + Trivially rebase patches 0001 and 0002.
     + Add 0003-rfb-increase-update-buf-size.patch. Allow larger screen sizes.
       (Closes: #1010449).
   * debian/control:
     + Bump Standards-Version: to 4.6.1. No changes needed.
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