[Pkg-libvirt-maintainers] Bug#1057160: libgvnc-1.0-0: Scrolling performance severely degraded between 1.0.0-1 and 1.3.1-1

[Jon F]

Package: libgvnc-1.0-0
Version: 1.3.1-1
Severity: important
X-Debbugs-Cc: jon.orebro at gmail.com


I recently upgraded my Debian install from Bullseye to Bookworm and with that
came a newer libgvnc (1.3 instead of 1.0). The upgrade caused Vinagre to be
basically useless for what I'm doing (viewing a fullscreen java application)
 - the application basically consists of a big table and scrolling is now
insanely slow. It scrolls a little bit, then quickly gets slower and slower
until it stops completely, taking more than 10 seconds to recover. I have
done it while checking both htop and iftop and it's not caused by CPU or
bandwidth saturation. If I force Vinagre to use the older libgvnc
(using LD_LIBRARY_PATH), it works exactly as it used to. So that's what I
have resorted to for now.

libgvnc which works: 1.0.0 (Debian version 1.0.0-1)
libgvnc which does not work: 1.3.1 (Debian version 1.3.1-1)


-- System Information:
Debian Release: 12.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-12-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=sv_SE.UTF-8, LC_CTYPE=sv_SE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libgvnc-1.0-0 depends on:
ii  libc6                2.36-9+deb12u1
ii  libgcrypt20          1.10.1-3
ii  libgdk-pixbuf-2.0-0  2.42.10+dfsg-1+b1
ii  libglib2.0-0         2.74.6-2
ii  libgnutls30          3.7.9-2
ii  libpulse0            16.1+dfsg1-2+b1
ii  libsasl2-2           2.1.28+dfsg-10
ii  zlib1g               1:1.2.13.dfsg-1

libgvnc-1.0-0 recommends no packages.

libgvnc-1.0-0 suggests no packages.

-- no debconf information