大家好，我的配置是联想Z580，三星SSD，分配了30G给ubuntu作双系统，为了解决发热量的问题，按照网上的教程安装了Nvdia Prime进行切换，效果不错，发热量和噪声都减小很多。但是在启动的时候，偶尔会进入黑屏状态，光标比正常启动时候所经历的那段短暂安的黑屏时小一些（我猜测跟显卡配置之类的有关），很奇怪的是按回车光标会下移，但是按其他按键没什么反应。最后只能冷启动，但是重启之后一般都能恢复正常。
我在网上查找相关案例，好像没有和我的情况完全一致的。还是请各位前辈指点，看看修改哪里，谢谢！~

1. 把下面指令 複製 貼進終端機 執行
1-1. uname -r
1-2. sudo lspci -knn
1-3. sudo lshw -numeric -class video
1-4. sudo ubuntu-drivers devices
把結果直接 選取/複製 貼上來

2. https://bugs.launchpad.net/ubuntu/+sour ... s:list=NEW
已知 nvidia-prime Bug Reports

谢谢前辈。
>>uname -r
>> 3.13.0-32-generic

>>sudo lspci -knn
>>00:00.0 Host bridge [0600]: Intel Corporation 3rd Gen Core processor DRAM Controller [8086:0154] (rev 09)
Subsystem: Lenovo Device [17aa:3977]
00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port [8086:0151] (rev 09)
Kernel driver in use: pcieport
00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09)
Subsystem: Lenovo Device [17aa:3977]
Kernel driver in use: i915
00:14.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller [8086:1e31] (rev 04)
Subsystem: Lenovo Device [17aa:3977]
Kernel driver in use: xhci_hcd
00:16.0 Communication controller [0780]: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 [8086:1e3a] (rev 04)
Subsystem: Lenovo Device [17aa:3977]
Kernel driver in use: mei_me
00:1a.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 [8086:1e2d] (rev 04)
Subsystem: Lenovo Device [17aa:3977]
Kernel driver in use: ehci-pci
00:1b.0 Audio device [0403]: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller [8086:1e20] (rev 04)
Subsystem: Lenovo Device [17aa:3977]
Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 [8086:1e10] (rev c4)
Kernel driver in use: pcieport
00:1c.1 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 [8086:1e12] (rev c4)
Kernel driver in use: pcieport
00:1c.2 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 [8086:1e14] (rev c4)
Kernel driver in use: pcieport
00:1d.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 [8086:1e26] (rev 04)
Subsystem: Lenovo Device [17aa:3977]
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge [0601]: Intel Corporation HM76 Express Chipset LPC Controller [8086:1e59] (rev 04)
Subsystem: Lenovo Device [17aa:3977]
Kernel driver in use: lpc_ich
00:1f.2 SATA controller [0106]: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] [8086:1e03] (rev 04)
Subsystem: Lenovo Device [17aa:3977]
Kernel driver in use: ahci
00:1f.3 SMBus [0c05]: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller [8086:1e22] (rev 04)
Subsystem: Lenovo Device [17aa:3977]
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 05)
Subsystem: Lenovo Device [17aa:3975]
Kernel driver in use: r8169
04:00.0 Network controller [0280]: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01)
Subsystem: Lenovo Device [17aa:30a1]
Kernel driver in use: ath9k

>>sudo lshw -numeric -class video
>> *-display
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller [8086:166]
vendor: Intel Corporation [8086]
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:45 memory:f0000000-f03fffff memory:e0000000-efffffff ioport:3000(size=64)


>>sudo ubuntu-drivers devices
>>这里什么也没有输出

抱歉这么晚才回复您，不过我觉得这个和nvidia-prime关系不大，在之前没进行双显卡切换的时候，也有的时候出现这个问题。

1. 沒有偵測到 Nvdia 顯卡

2. 因為沒有偵測到 Nvdia 顯卡

3. https://launchpad.net/ubuntu/+source/nvidia-prime
nvidia-prime: Tools to enable NVIDIA's Prime
3-1. 既然沒偵測到 Nvdia 顯卡
那麼 nvidia-prime 是不是 英雄無用武之地 ?
確認一下