I was able to fix this by removing patch
0003-rfb-increase-update-buf-size.patch
and recompiling this package, as well as x11vnc. I am guessing this might actually be a problem within x11vnc.
On Mon, 26 Dec 2022 23:19:31 +0000 (UTC) Jay <j...@yahoo.com> wrote:
Package: libvncserver1 Version: 0.9.13+dfsg-2 Severity: normal Dear Maintainer, * What led up to the situation? I run x11vnc over a gigabit direct connection with: x11vnc -usepw -ncache_cr -display :0 -loop -noxdamage -shared -nomodtweak -noshmUpgrading to 0.9.13+dfsg-2+deb11u1 and then reconnecting my client caused x11vnc to run very slowly. `*** fb_push ublen NOT ZERO: 3290940` appeared in the log very frequently. From my logs, I had only seen this message once before, 10 months ago.* What exactly did you do (or not do) that was effective (or ineffective)? Ineffective: reconnecting, restarting x11vnc, or rebooting Effective: downgrading to 0.9.13+dfsg-2 and reconnecting * What was the outcome of this action?reconnecting, restarting x11vnc, or rebooting: x11vnc remained sluggish and `fb_push ublen NOT ZERO` continued to appeardowngrading to 0.9.13+dfsg-2 and reconnecting: went back to a usable speed * What outcome did you expect instead? I did not expect a minor update to change the speed of x11vnc. -- System Information: Debian Release: 11.6 APT prefers stable-security APT policy: (900, 'stable-security'), (900, 'stable'), (875, 'oldstable'), (800, 'oldoldstable'), (800, 'testing'), (700, 'oldoldstable'), (700, 'unstable'), (600, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.10.0-20-amd64 (SMP w/4 CPU threads) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en Shell: /bin/sh linked to /bin/bash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages libvncserver1 depends on: ii libc6 2.33-8 ii libgcrypt20 1.8.7-6 ii libgnutls30 3.7.1-5+deb11u2 ii libjpeg62-turbo 1:2.0.6-4 ii liblzo2-2 2.10-2 ii zlib1g 1:1.2.11.dfsg-2+deb11u2 libvncserver1 recommends no packages. libvncserver1 suggests no packages.
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