家鯖をFreeBSD 9.2-RELEASEから10.1-RELEASEに更新したら、Xvncが起動しなくなってしまった。X Window System単体でも下記のような感じで動かない。
（上略） Initializing built-in extension DRI2 Loading extension GLX (EE) Fatal server error: (EE) no screens found(EE) (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. (EE) (EE) Server terminated with error (1). Closing log file. xinit: giving up xinit: unable to connect to X server: Connection refused xinit: server error
とりあえず再設定してみる（本当は/var/log/Xorg.0.logを見るべき。）
$ sudo Xorg -configure X.Org X Server 1.14.7 Release Date: 2014-06-05 X Protocol Version 11, Revision 0 Build Operating System: FreeBSD 10.1-RELEASE-p6 amd64 Current Operating System: FreeBSD Freyja.local.decomo.info 10.1-RELEASE-p6 FreeBSD 10.1-RELEASE-p6 #0: Tue Feb 24 19:00:21 UTC 2015 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 Build Date: 04 April 2015 11:50:25PM Current version of pixman: 0.32.6 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Sun Apr 5 13:37:46 2015 List of video drivers: vboxvideo vmware vmwlegacy vesa (EE) module ABI major version (6) doesn't match the server's version (14) (++) Using config file: "/root/xorg.conf.new" (==) Using system config directory "/usr/local/share/X11/xorg.conf.d" Xorg detected your mouse at device /dev/sysmouse. Please check your config if the mouse is still not operational, as by default Xorg tries to autodetect the protocol. Your xorg.conf file is /root/xorg.conf.new To test the server, run 'X -config /root/xorg.conf.new' (EE) Server terminated with error (2). Closing log file.
なんぞモジュールのABIが適合してないらしい。ここでようやく/var/log/Xorg.0.logを見るべきことに気づく。
（上略） [ 912.200] (II) LoadModule: "vmware" [ 912.201] (II) Loading /usr/local/lib/xorg/modules/drivers/vmware_drv.so [ 912.201] (II) Module vmware: vendor="X.Org Foundation" [ 912.202] compiled for 1.7.7, module version = 11.0.99 [ 912.202] Module class: X.Org Video Driver [ 912.202] ABI class: X.Org Video Driver, version 6.0 [ 912.202] (EE) module ABI major version (6) doesn't match the server's version (14) [ 912.202] (II) UnloadModule: "vmware" [ 912.202] (II) Unloading vmware [ 912.203] (EE) Failed to load module "vmware" (module requirement mismatch, 0) [ 912.203] (II) LoadModule: "vmwlegacy" [ 912.204] (II) Loading /usr/local/lib/xorg/modules/drivers/vmwlegacy_drv.so [ 912.205] (EE) Failed to load /usr/local/lib/xorg/modules/drivers/vmwlegacy_drv.so: /usr/local/lib/xorg/modules/drivers/vmwlegacy_drv.so: Undefined symbol "miEmptyData" [ 912.205] (II) UnloadModule: "vmwlegacy" [ 912.205] (II) Unloading vmwlegacy [ 912.205] (EE) Failed to load module "vmwlegacy" (loader failed, 7) （下略）
vmwareのビデオドライバが不味いっぽい。昔ESXi上で動かしていた時の残骸で、またfreebsd-updateの時に共有ライブラリの更新をミスったのが根本原因だろう。OS更新に失敗して見事にpkg情報が全部飛んでしまっているので、一度pkgでインストールしすぐにアンインストール。vmwlegacy_drv.soはなぜか消えなかったので手動で削除。
sudo pkg install xf86-video-vmware sudo pkg remove xf86-video-vmware sudo rm /usr/local/lib/xorg/modules/drivers/vmwlegacy_drv.so
Xorg単体では動くようになったっぽいが（ヘッドレス環境なので本当に動いてるかは未確認）、やっぱりXvncが起動しない。ログはこんな感じ。
Xvnc Free Edition 4.1.3 - built Mar 29 2015 07:02:28 Copyright (C) 2002-2008 RealVNC Ltd. See http://www.realvnc.com for information on VNC. Underlying X server release 40300000, The XFree86 Project, Inc Mon Apr 6 23:15:00 2015 vncext: VNC extension running! vncext: Listening for VNC connections on port 5901 vncext: Listening for HTTP connections on port 5801 vncext: created VNC server for screen 0 error opening security policy file /usr/local/lib/X11/xserver/SecurityPolicy Could not init font path element /usr/local/lib/X11/fonts/misc/, removing from list! Could not init font path element /usr/local/lib/X11/fonts/Speedo/, removing from list! Could not init font path element /usr/local/lib/X11/fonts/Type1/, removing from list! Could not init font path element /usr/local/lib/X11/fonts/CID/, removing from list! Could not init font path element /usr/local/lib/X11/fonts/75dpi/, removing from list! Could not init font path element /usr/local/lib/X11/fonts/100dpi/, removing from list! Fatal server error: could not open default font 'fixed' xsetroot: unable to open display 'Freyja.local.decomo.info:1' vncconfig: unable to open display "Freyja.local.decomo.info:1" xterm: Xt error: Can't open display: Freyja.local.decomo.info:1 Openbox-Message: 環境変数 DISPLAY からディスプレイを開くのに失敗しました。
フォントパスが無いと怒られてるけど、これらパスはxorg.confから取り除いてるんだけどな…。
使えなくても直ぐさま困る訳ではないが、使えると便利な場合があるので早いとこ何とかしたい(´・ω・`)
結局、インストール済みのpkgを全部消し、更に/var/db/pkgと/var/db/portsを真っさらにしてTigerVNC環境を一から構築し直したら何事も無く動くようになった(´・ω・｀)