我的新笔记本电脑有一个 NVIDIA 显卡（不确定是哪一个）。我刚刚安装了 Fedora 27。但是，我的 HDMI 或 VGA 端口无法正常工作，甚至无法被识别。我已经尝试按照https://www.if-not-true-then-false.com/2015/fedora-nvidia-guide/和https://fedoraproject.org/wiki/Bumblebee上的说明进行操作（以及其他一些），但到目前为止还没有成功。
以下是上下文的各种命令的一些输出：
> xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected primary 1920x1080+0+0 0mm x 0mm
1920x1080 77.00*
> sudo lspci -v | grep -A 15 'VGA'
00:02.0 VGA compatible controller: Intel Corporation Device 591b (rev 04) (prog-if 00 [VGA controller])
Subsystem: Dell Device 07d1
Flags: bus master, fast devsel, latency 0, IRQ 255
Memory at eb000000 (64-bit, non-prefetchable) [size=16M]
Memory at 80000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [100] Process Address Space ID (PASID)
Capabilities: [200] Address Translation Service (ATS)
Capabilities: [300] Page Request Interface (PRI)
Kernel modules: i915
> sudo lspci -v | grep -A 18 '3D'
01:00.0 3D controller: NVIDIA Corporation Device 179c (rev a2)
Subsystem: Dell Device 07d1
Flags: bus master, fast devsel, latency 0, IRQ 255
Memory at ec000000 (32-bit, non-prefetchable) [size=16M]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, prefetchable) [size=32M]
I/O ports at e000 [disabled] [size=128]
Expansion ROM at ed000000 [disabled] [size=512K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [250] Latency Tolerance Reporting
Capabilities: [258] L1 PM Substates
Capabilities: [128] Power Budgeting <?>
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
Capabilities: [900] #19
Kernel modules: nouveau
有任何想法吗？