尝试安装 Nvidia 驱动程序几次。全部失败，黑屏。但这不是问题所在。Ubuntu
受到了附带损害。恢复后，我无法使用 HP 功能按钮来控制屏幕背光，电源管理器插件中的背光滑块消失了，屏幕撕裂又回来了。
基本上，我想将一切恢复到 nvidia-driver 事件之前的状态。
因此我请求帮助来找出损坏的地方并知道如何修复它们。
GK208M [GeForce GT 740M]，Ubuntu 18.04.1
像这样清除 nvidia (以防万一，使用 primus，不确定它是否存在)：
sudo apt purge nvidia* libnvidi* primus
sudo apt autoremove
sudo update-initramfs -u
ls -l /sys/class/背光
total 0
xrandr——详细
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 1920x1080+0+0 (0x2b1) normal (normal) 0mm x 0mm
Identifier: 0x2b0
Timestamp: 50892
Subpixel: unknown
Clones:
CRTC: 0
CRTCs: 0
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
1920x1080 (0x2b1) 159.667MHz *current
h: width 1920 start 0 end 0 total 1920 skew 0 clock 83.16KHz
v: height 1080 start 0 end 0 total 1080 clock 77.00Hz
sudo lshw -c 视频
*-display UNCLAIMED
description: 3D controller
product: GK208M [GeForce GT 740M]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:d2000000-d2ffffff memory:a0000000-afffffff memory:b0000000-b1ffffff ioport:5000(size=128) memory:b2000000-b207ffff
*-display UNCLAIMED
description: VGA compatible controller
product: 4th Gen Core Processor Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 06
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list
configuration: latency=0
resources: memory:d3000000-d33fffff memory:c0000000-cfffffff ioport:6000(size=64) memory:c0000-dffff
串行通信
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d5)
00:1c.6 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #7 (rev d5)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM87 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
01:00.0 3D controller: NVIDIA Corporation GK208M [GeForce GT 740M] (rev a1)
08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev c4)
09:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 PCI Express Card Reader (rev 01)
0f:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
修改
Module Size Used by
serpent_avx2 53248 0
serpent_avx_x86_64 53248 1 serpent_avx2
serpent_sse2_x86_64 57344 3
serpent_generic 28672 3 serpent_avx2,serpent_sse2_x86_64,serpent_avx_x86_64
lrw 20480 3 serpent_avx2,serpent_sse2_x86_64,serpent_avx_x86_64
ablk_helper 16384 3 serpent_avx2,serpent_sse2_x86_64,serpent_avx_x86_64
dm_crypt 40960 2
ccm 20480 6
pci_stub 16384 1
vboxpci 24576 0
vboxnetadp 28672 0
vboxnetflt 28672 0
vboxdrv 471040 3 vboxpci,vboxnetadp,vboxnetflt
nls_iso8859_1 16384 1
uvcvideo 86016 0
videobuf2_vmalloc 16384 1 uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_v4l2 24576 1 uvcvideo
videobuf2_core 40960 2 videobuf2_v4l2,uvcvideo
videodev 184320 3 videobuf2_core,videobuf2_v4l2,uvcvideo
media 40960 2 videodev,uvcvideo
snd_hda_codec_idt 57344 1
snd_hda_codec_generic 73728 1 snd_hda_codec_idt
arc4 16384 2
btusb 45056 0
btrtl 16384 1 btusb
btbcm 16384 1 btusb
btintel 16384 1 btusb
bluetooth 548864 5 btrtl,btintel,btbcm,btusb
ecdh_generic 24576 1 bluetooth
iwldvm 229376 0
mac80211 778240 1 iwldvm
intel_rapl 20480 0
x86_pkg_temp_thermal 16384 0
intel_powerclamp 16384 0
coretemp 16384 0
kvm_intel 212992 0
kvm 598016 1 kvm_intel
snd_hda_intel 40960 3
irqbypass 16384 1 kvm
snd_hda_codec 126976 3 snd_hda_codec_generic,snd_hda_intel,snd_hda_codec_idt
crct10dif_pclmul 16384 0
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
snd_hda_core 81920 4 snd_hda_codec_generic,snd_hda_intel,snd_hda_codec,snd_hda_codec_idt
pcbc 16384 0
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 98304 3 snd_hda_intel,snd_hda_codec,snd_hda_core
aesni_intel 188416 6
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
aes_x86_64 20480 1 aesni_intel
crypto_simd 16384 1 aesni_intel
glue_helper 16384 4 serpent_avx2,serpent_sse2_x86_64,aesni_intel,serpent_avx_x86_64
snd_rawmidi 32768 1 snd_seq_midi
cryptd 24576 6 crypto_simd,ablk_helper,ghash_clmulni_intel,aesni_intel
intel_cstate 20480 0
intel_rapl_perf 16384 0
snd_seq 65536 2 snd_seq_midi,snd_seq_midi_event
iwlwifi 282624 1 iwldvm
input_leds 16384 0
joydev 24576 0
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
hp_wmi 16384 0
sparse_keymap 16384 1 hp_wmi
wmi_bmof 16384 0
serio_raw 16384 0
cfg80211 622592 3 iwldvm,iwlwifi,mac80211
snd_timer 32768 2 snd_seq,snd_pcm
rtsx_pci_ms 20480 0
memstick 16384 1 rtsx_pci_ms
lpc_ich 24576 0
snd 81920 16 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_timer,snd_pcm,snd_hda_codec_idt,snd_rawmidi
mei_me 40960 0
mei 90112 1 mei_me
soundcore 16384 1 snd
shpchp 36864 0
ie31200_edac 16384 0
hp_accel 28672 0
lis3lv02d 20480 1 hp_accel
input_polldev 16384 1 lis3lv02d
hp_wireless 16384 0
mac_hid 16384 0
sch_fq_codel 20480 6
parport_pc 36864 0
ppdev 20480 0
lp 20480 0
parport 49152 3 parport_pc,lp,ppdev
ip_tables 28672 0
x_tables 40960 1 ip_tables
autofs4 40960 2
hid_generic 16384 0
usbhid 49152 0
hid 118784 2 usbhid,hid_generic
nouveau 1716224 0
i915 1617920 0
mxm_wmi 16384 1 nouveau
ttm 106496 1 nouveau
i2c_algo_bit 16384 2 i915,nouveau
drm_kms_helper 172032 2 i915,nouveau
syscopyarea 16384 1 drm_kms_helper
rtsx_pci_sdmmc 24576 0
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
fb_sys_fops 16384 1 drm_kms_helper
psmouse 147456 0
ahci 36864 2
drm 401408 4 drm_kms_helper,i915,ttm,nouveau
r8169 86016 0
libahci 32768 1 ahci
rtsx_pci 65536 2 rtsx_pci_sdmmc,rtsx_pci_ms
mii 16384 1 r8169
wmi 24576 4 hp_wmi,wmi_bmof,mxm_wmi,nouveau
video 45056 2 i915,nouveau
英希-G
Graphics: Card-1: Intel 4th Gen Core Processor Integrated Graphics Controller
Card-2: NVIDIA GK208M [GeForce GT 740M]
Display Server: x11 (X.Org 1.19.6 ) drivers: fbdev,intel (unloaded: modesetting,vesa)
Resolution: [email protected]
OpenGL: renderer: llvmpipe (LLVM 6.0, 256 bits) version: 3.3 Mesa 18.0.5
更新：这是个错误。忘记从 /etc/default/grub 中删除 nomodeset