好的，我知道我不是唯一的一个，但我会尝试提供所有可能的信息，使其尽可能具有示范性并缩小错误源。
我全新安装了 Ubuntu 12.04，安装完成后挂起功能正常，但现在却不行了。
右上角系统电源按钮的挂起选项运行正常。
我确实做过一些我不知道它们是否相关的事情：
- 再次安装并删除 FGLRX 驱动程序（Radeon 显卡）
- 安装 Jupiter 电源管理（关闭它不会改变任何东西）
- 插入和拔出外部显示器
我所知道的配置已经设置好了：
- 在系统设置/电源中，关闭盖子时全部设置为暂停
- 使用 dconf-editor 仔细检查，所有设置均已暂停
所以，从现在开始我不知道该如何继续。导致此错误的常见问题是什么？
编辑：我的电脑型号是：三星 5 系列 14 英寸 NP530U4BI
$ sudo lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller
00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller
00:16.0 Communication controller [0780]: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1
00:1a.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2
00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller
00:1c.0 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1
00:1c.3 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4
00:1c.4 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5
00:1d.0 USB controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1
00:1f.0 ISA bridge [0601]: Intel Corporation HM65 Express Chipset Family LPC Controller [8086:1c49] (rev 04)
00:1f.2 SATA controller [0106]: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller
00:1f.3 SMBus [0c05]: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller [8086:1c22] (rev 04)
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Thames [Radeon 7500M/7600M Series]
02:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6230
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller
04:00.0 USB controller [0c03]: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller
答案1
是的，我的 Acer Aspire 7535G 也遇到了同样的问题，它配备了 Radeon 显卡。这是我发布的错误报告： https://bugs.launchpad.net/ubuntu/+source/linux/+bug/989674 请继续关注它，以便将来可能得到修复或支持。
暂时按照我的方法将其唤醒回 GUI。按 Ctrl + Alt + F6 打开 Ttyl 终端，然后按 Ctrl + Alt + F7 重新加载 GUI。
希望有帮助！