我遇到了以下问题：休眠后（使用sudo systemctl hibernate终端中的命令或 Ubuntu 桌面右上角的菜单）我得到一个黑屏（即使所有设备似乎都在工作。风扇工作！）我被迫重新启动操作系统，因为恢复失败，我无法回到“保存状态”。里面的内容etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla是：
[Re-enable hibernate by default in upower]
Identity=unix-user:*
Action=org.freedesktop.upower.hibernate
ResultActive=yes
[Re-enable hibernate by default in logind]
Identity=unix-user:*
Action=org.freedesktop.login1.hibernate;org.freedesktop.login1.handle-hibernate-key;org.freedesktop.login1;org.freedesktop.login1.hibernate-multiple-sessions;org.freedesktop.login1.hibernate-ignore-inhibit
ResultActive=yes
附加信息：Ubuntu 版本：16.04LTS
内核版本：
uname -r
4.13.0-26-generic
图形信息：
udo lspci | grep -E 'VGA|Display'
[sudo] password di michele:
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Whistler [Radeon HD 6730M/6770M/7690M XT] (rev ff)
michele@michele-ubuntu:~$ sudo lshw -c …