[Bug 291386] net/tigervnc-viewer: vncviewer freezes with Xorg going 100% CPU on FreeBSD 15.0-RELEASE

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 04 Dec 2025 09:10:33 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291386

            Bug ID: 291386
           Summary: net/tigervnc-viewer: vncviewer freezes with Xorg going
                    100% CPU on FreeBSD 15.0-RELEASE
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: meta@FreeBSD.org
          Reporter: freebsd@spritneybeers.de
          Assignee: meta@FreeBSD.org
             Flags: maintainer-feedback?(meta@FreeBSD.org)

% freebsd-version ; uname -a                                                    
15.0-RELEASE                                                                    
FreeBSD thinkpad 15.0-RELEASE FreeBSD 15.0-RELEASE
releng/15.0-n280995-7aedc8de6446 GENERIC amd64

% pkg info tigervnc-viewer
tigervnc-viewer-1.15.0_1
Name           : tigervnc-viewer
Version        : 1.15.0_1
Installed on   : Wed Dec  3 21:24:21 2025 CET
Origin         : net/tigervnc-viewer
Architecture   : FreeBSD:15:amd64
...
Annotations    :
        FreeBSD_version: 1500068
        build_timestamp: 2025-11-25T15:52:42+0000
        built_by       : poudriere-git-3.4.4-6-gd1913ec3
        cpe            : cpe:2.3:a:tigervnc:tigervnc:1.15.0:::::freebsd15:x64:1
        port_checkout_unclean: no
        port_git_hash  : e3fa556c9a509b3bc0e615815d8368b663c95dc3
        ports_top_checkout_unclean: no
        ports_top_git_hash: 63b58f9533a2e7bb333ea98af105fe422369d2e6
        repo_type      : binary
        repository     : FreeBSD-ports


Upgraded from 14.3-RELEASE to 15.0-RELEASE last night. Now, when I start
vncviewer, the application is all white, and Xorg CPU rises to 100%.

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