“至关重要：我们失败了，但是失败的鲸鱼已经死了。抱歉…”

今天启动机器时，我的系统日志中出现了一些非常奇怪的消息：

...
Aug 17 18:58:15 Floral-Towel systemd[1349]: Startup finished in 266ms.
Aug 17 18:58:15 Floral-Towel systemd[1349]: Starting Default.
Aug 17 18:58:15 Floral-Towel systemd[1]: Started User Manager for UID 121.
Aug 17 18:58:15 Floral-Towel freshclam[782]: Empty script safebrowsing-43732.cdiff, need to download entire database
Aug 17 18:58:17 Floral-Towel gnome-session[1355]: gnome-session[1355]: CRITICAL: We failed, but the fail whale is dead. Sorry....
Aug 17 18:58:17 Floral-Towel gnome-session[1355]: CRITICAL: We failed, but the fail whale is dead. Sorry....
Aug 17 18:58:17 Floral-Towel gdm[1232]: Child process -1352 was already dead.
Aug 17 18:58:17 Floral-Towel systemd[1]: Stopping User Manager for UID 121...
Aug 17 18:58:17 Floral-Towel systemd[1349]: Stopped target Default.
Aug 17 18:58:17 Floral-Towel systemd[1349]: Stopping Default.
Aug 17 18:58:17 Floral-Towel systemd[1349]: Stopped target Basic System.
...

大约在那时，我还提供了其他一些消息，以防它们在某种程度上有所帮助。但是要弄清楚，谁是“失败的鲸鱼”？为什么他/她/它死了？这一切是什么意思？而且它在我的系统日志中做什么？

我正在运行带有Gnome Shell和Gnome 3.16的Ubuntu Gnome 15.04。

操作系统信息：

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 15.04
Release:    15.04
Codename:   vivid

包装信息：

gnome-session:
  Installed: 3.16.0-0ubuntu1~vivid1
  Candidate: 3.16.0-0ubuntu1~vivid1
  Version table:
 *** 3.16.0-0ubuntu1~vivid1 0
        500 http://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu/ vivid/main amd64 Packages
        100 /var/lib/dpkg/status
     3.14.0-2ubuntu5 0
        500 http://gb.archive.ubuntu.com/ubuntu/ vivid-updates/main amd64 Packages
     3.14.0-2ubuntu4 0
        500 http://gb.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages
     3.14.0-2ubuntu4~vivid1 0
        500 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu/ vivid/main amd64 Packages

在这种情况下，“失败的鲸鱼”是GNOME如果出现问题时记录的错误消息。它是由Lu Yiying Lu的插图命名的，该插图被Twitter用于显示错误。

如果它死了，则意味着没有足够的GNOME运行来显示错误。