手动安装闭源驱动de
./nvidia-settings -v

nvidia-settings: version 375.82 (buildmeister@swio-display-x86-rhel47-03) Wed Jul 19 21:42:33 PDT 2017
The NVIDIA X Server Settings tool.

This program is used to configure the NVIDIA Linux graphics driver.
For more detail, please see the nvidia-settings(1) man page.

dmesg |grep WARNING
[ 53.832462] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 66.489157] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 69.112274] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 131.933396] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 142.708065] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 1156.336809] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 1158.693503] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 1320.986353] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 1576.447146] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0
[ 1579.170546] nvidia-modeset: WARNING: GPU:0: Unable to read EDID for display device DVI-I-0

还有这个软件没了
sudo apt-get install xresprobe
sudo ddcprobe
E: 无法定位软件包 xresprobe

软件包 xresprobe

trusty (14.04LTS) (x11): X Resolution Probe [universe]
0.4.24ubuntu9: amd64 arm64 armhf i386 powerpc ppc64el

16.04没了吗？

我用了个IDE硬盘

dmesg |grep EXT4-fs
[ 5.503534] EXT4-fs (sdc3): mounted filesystem with ordered data mode. Opts: (null)
[ 15.653586] EXT4-fs (sdc3): re-mounted. Opts: errors=remount-ro
[ 26.489301] EXT4-fs (sdc2): mounted filesystem with ordered data mode. Opts: (null)
[ 27.281492] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null)

曾经出过ata7.0: sta status DRDY
说是内核bug,添加了参数好了。

1. 檢查
1-1. 你的顯卡有沒有 HDMI/DVI/DisplayID 接頭插孔 ?
1-2. 你的螢幕有沒有 HDMI/DVI/DisplayID 接頭插孔 ?
1-3. 你使用什麼連接線連接顯卡跟螢幕 ?

2. 參閱
2-1. https://askubuntu.com/questions/398663/ ... evice-mean
What does “Unable to read EDID for display device” mean?
2-2. https://zh.wikipedia.org/wiki/EDID
延伸顯示能力識別（Extended display identification data，簡稱EDID）
2-3. https://en.wikipedia.org/wiki/Extended_ ... ation_Data
Extended Display Identification Data (EDID)
2-4. https://zh.wikipedia.org/wiki/DVI
DVI的英文全名為Digital Visual Interface
2-5. https://zh.wikipedia.org/wiki/HDMI
高畫質多媒體介面（英語：High Definition Multimedia Interface，簡稱HDMI）
2-6. https://zh.wikipedia.org/wiki/DisplayPort
DisplayPort（簡稱DP）是影片電子標準協會（VESA）

3. https://packages.ubuntu.com/search?suit ... chon=names
16.04 没有 xresprobe
3-1. https://packages.ubuntu.com/search?suit ... chon=names
没有 ddcprobe

4. 可能原因很多
4-1. 先參閱
http://ubuntuforums.org/showpost.php?p= ... ostcount=8
看看 能否幫你解決
4-2. 如果還沒解決
把下面指令 複製 貼進終端機 執行
4-2-1. sudo ls -l /sys/dev/block | grep ata6
4-2-2. sudo ls -Al /dev/disk/by-uuid/*
4-2-3. sudo cat /etc/fstab
把結果全部直接 選取/複製/貼上來
不要摘錄 以免遺漏重要訊息
不要擷圖 方便回文直接引用你貼上來的資料 方便你閱讀

因为我的vag线是 一头是vga插头，另一头是dvi插头。那就不用dvi转接头啦。显示屏没有hdmi插口

sudo ls -l /sys/dev/block |grep ata6
sudo ls -l /sys/dev/block |grep ata7
sudo ls -l /sys/dev/block/ |grep ata6
sudo ls -l /sys/dev/block/
1:0/ 1:11/ 1:14/ 1:3/ 1:6/ 1:9/ 7:2/ 7:5/ 8:0/ 8:17/ 8:32/ 8:35/
1:1/ 1:12/ 1:15/ 1:4/ 1:7/ 7:0/ 7:3/ 7:6/ 8:1/ 8:2/ 8:33/ 8:36/
1:10/ 1:13/ 1:2/ 1:5/ 1:8/ 7:1/ 7:4/ 7:7/ 8:16/ 8:3/ 8:34/ 8:5/

sudo ls -l /sys/dev/block/ |grep ata
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:0 -> ../../devices/pci0000:00/0000:00:1f.2/ata1/host0/target0:0:0/0:0:0:0/block/sda
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:1 -> ../../devices/pci0000:00/0000:00:1f.2/ata1/host0/target0:0:0/0:0:0:0/block/sda/sda1
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:16 -> ../../devices/pci0000:00/0000:00:1f.2/ata2/host1/target1:0:0/1:0:0:0/block/sdb
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:17 -> ../../devices/pci0000:00/0000:00:1f.2/ata2/host1/target1:0:0/1:0:0:0/block/sdb/sdb1
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:2 -> ../../devices/pci0000:00/0000:00:1f.2/ata1/host0/target0:0:0/0:0:0:0/block/sda/sda2
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:3 -> ../../devices/pci0000:00/0000:00:1f.2/ata1/host0/target0:0:0/0:0:0:0/block/sda/sda3
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:32 -> ../../devices/pci0000:00/0000:00:1c.4/0000:03:00.1/ata5/host4/target4:0:1/4:0:1:0/block/sdc
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:33 -> ../../devices/pci0000:00/0000:00:1c.4/0000:03:00.1/ata5/host4/target4:0:1/4:0:1:0/block/sdc/sdc1
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:34 -> ../../devices/pci0000:00/0000:00:1c.4/0000:03:00.1/ata5/host4/target4:0:1/4:0:1:0/block/sdc/sdc2
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:35 -> ../../devices/pci0000:00/0000:00:1c.4/0000:03:00.1/ata5/host4/target4:0:1/4:0:1:0/block/sdc/sdc3
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:36 -> ../../devices/pci0000:00/0000:00:1c.4/0000:03:00.1/ata5/host4/target4:0:1/4:0:1:0/block/sdc/sdc4
lrwxrwxrwx 1 root root 0 10月 3 19:25 8:5 -> ../../devices/pci0000:00/0000:00:1f.2/ata1/host0/target0:0:0/0:0:0:0/block/sda/sda5


sudo ls -Al /dev/disk/by-uuid/*
lrwxrwxrwx 1 root root 10 10月 4 2017 /dev/disk/by-uuid/391f4e27-ae12-4239-bf13-f10b0d2f5f92 -> ../../sdc4
lrwxrwxrwx 1 root root 10 10月 4 2017 /dev/disk/by-uuid/3a0e8f6e-1633-464f-aecc-fee9b66fc4fe -> ../../sdc3
lrwxrwxrwx 1 root root 10 10月 4 2017 /dev/disk/by-uuid/7A68C07568C03225 -> ../../sdb1
lrwxrwxrwx 1 root root 10 10月 4 2017 /dev/disk/by-uuid/BC60C05460C016D4 -> ../../sda1
lrwxrwxrwx 1 root root 10 10月 4 2017 /dev/disk/by-uuid/bf6142cc-fb90-4ba8-8807-6b99a614fd39 -> ../../sdc1
lrwxrwxrwx 1 root root 10 10月 4 2017 /dev/disk/by-uuid/D8FA219DFA2178C0 -> ../../sda2
lrwxrwxrwx 1 root root 10 10月 4 2017 /dev/disk/by-uuid/EA44973944970809 -> ../../sda5
lrwxrwxrwx 1 root root 10 10月 4 2017 /dev/disk/by-uuid/ef77e813-7fee-44e4-ae03-c6f86415f5b6 -> ../../sdc2


sudo cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/sdc3 during installation
UUID=3a0e8f6e-1633-464f-aecc-fee9b66fc4fe / ext4 errors=remount-ro 0 1
# /boot was on /dev/sdc1 during installation
UUID=bf6142cc-fb90-4ba8-8807-6b99a614fd39 /boot ext4 defaults 0 2
# /home was on /dev/sdc2 during installation
UUID=ef77e813-7fee-44e4-ae03-c6f86415f5b6 /home ext4 defaults 0 2
# swap was on /dev/sdc4 during installation
UUID=391f4e27-ae12-4239-bf13-f10b0d2f5f92 none swap sw 0 0






sudo xrandr --verbose
Screen 0: minimum 8 x 8, current 1152 x 864, maximum 16384 x 16384
DVI-I-0 connected primary 1152x864+0+0 (0x280) normal (normal left inverted right x axis y axis) 0mm x 0mm
Identifier: 0x27c
Timestamp: 80669
Subpixel: unknown
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 0
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: VGA
supported: VGA
ConnectorType: DVI-I
ConnectorNumber: 0
_ConnectorLocation: 0
1024x768 (0x27d) 65.000MHz -HSync -VSync +preferred
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz
v: height 768 start 771 end 777 total 806 clock 60.00Hz
1360x768 (0x27e) 72.000MHz +HSync -VSync
h: width 1360 start 1408 end 1440 total 1520 skew 0 clock 47.37KHz
v: height 768 start 771 end 781 total 790 clock 59.96Hz
1360x768 (0x27f) 84.750MHz -HSync +VSync
h: width 1360 start 1432 end 1568 total 1776 skew 0 clock 47.72KHz
v: height 768 start 771 end 781 total 798 clock 59.80Hz
1152x864 (0x280) 81.620MHz -HSync +VSync *current
h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.70KHz
v: height 864 start 865 end 868 total 895 clock 60.00Hz
800x600 (0x281) 50.000MHz +HSync +VSync
h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz
v: height 600 start 637 end 643 total 666 clock 72.19Hz
800x600 (0x282) 40.000MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz
v: height 600 start 601 end 605 total 628 clock 60.32Hz
800x600 (0x283) 36.000MHz +HSync +VSync
h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz
v: height 600 start 601 end 603 total 625 clock 56.25Hz
680x384 (0x284) 36.000MHz +HSync -VSync DoubleScan
h: width 680 start 704 end 720 total 760 skew 0 clock 47.37KHz
v: height 384 start 385 end 390 total 395 clock 59.96Hz
680x384 (0x285) 42.375MHz -HSync +VSync DoubleScan
h: width 680 start 716 end 784 total 888 skew 0 clock 47.72KHz
v: height 384 start 385 end 390 total 399 clock 59.80Hz
640x480 (0x286) 25.175MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz
v: height 480 start 490 end 492 total 525 clock 59.94Hz
512x384 (0x287) 32.500MHz -HSync -VSync DoubleScan
h: width 512 start 524 end 592 total 672 skew 0 clock 48.36KHz
v: height 384 start 385 end 388 total 403 clock 60.00Hz
400x300 (0x288) 25.000MHz +HSync +VSync DoubleScan
h: width 400 start 428 end 488 total 520 skew 0 clock 48.08KHz
v: height 300 start 318 end 321 total 333 clock 72.19Hz
320x240 (0x289) 12.587MHz -HSync -VSync DoubleScan
h: width 320 start 328 end 376 total 400 skew 0 clock 31.47KHz
v: height 240 start 245 end 246 total 262 clock 60.05Hz
VGA-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x28a
Timestamp: 80669
Subpixel: unknown
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: VGA
supported: VGA
ConnectorType: VGA
ConnectorNumber: 1
_ConnectorLocation: 1
DVI-I-1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x28b
Timestamp: 80669
Subpixel: unknown
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DVI-I
ConnectorNumber: 0
_ConnectorLocation: 0
HDMI-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x28c
Timestamp: 80669
Subpixel: unknown
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: HDMI
ConnectorNumber: 2
_ConnectorLocation: 2




sudo ddcprobe
vbe: VESA 3.0 detected.
oem: NVIDIA
vendor: NVIDIA Corporation
product: GF104B Board - 10410080 Chip Rev
memory: 14336kb
mode: 640x400x256
mode: 640x480x256
mode: 800x600x16
mode: 800x600x256
mode: 1024x768x16
mode: 1024x768x256
mode: 1280x1024x16
mode: 1280x1024x256
mode: 320x200x64k
mode: 320x200x16m
mode: 640x480x64k
mode: 640x480x16m
mode: 800x600x64k
mode: 800x600x16m
mode: 1024x768x64k
mode: 1024x768x16m
mode: 1280x1024x64k
mode: 1280x1024x16m
edid:
edidfail

1. sudo ls -l /sys/dev/block | grep ata7

1-1. 抱歉 這個忘了修正

1-2. 沒有 ata7 字串
1-2-1. ata1, ata2, ... ata7 每次開機 並不一定固定不變 所以要以出現錯誤訊息當次為準

2. 有轉訊號的功能嘛 ?
2-1. 你的錯誤訊息原因 可能跟你使用這種連接線有關 換一條連接線試試吧

https://wiki.archlinux.org/index.php/NV ... D%E6%96%87)

使用一台电视(DFP)作为X的唯一输出

假如CRT-0上面的备用显示器没有被自动检测，这可能是使用DVI作为主要输出的一个问题，或许是X启动时电视被关闭或者是还没有被连接到计算机上。

强制英伟达使用DFP，把一个EDID的拷贝储存在文件系统上，好让X可以解释文件，而不是从TV/DFP上面读EDID。

运行nvidia-settings来获得EDID，它会用树格式来显示一些信息，并会忽略余下的设置和选择的GPU(相应条目应该为"GPU-0"或者类似的选项)，点击"DFP"节(再提醒一下，是"DFP-0"或者类似的选项)，点击"获取 Edid"按钮来储存，例如/etc/X11/dfp0.edid。

在xorg.conf的"Device"节添加：

Option "ConnectedMonitor" "DFP"
Option "CustomEDID" "DFP-0:/etc/X11/dfp0.edid"

选项ConnectedMonitor会强制驱动调整连接的DFP。选项CustomEDID会提供EDID数据给设备，这将意味着连接到TV/DFP的设备会被在X的进程中启动。

通过这种方法，可以在启动时自动启动一个登录管理器并且通过开机进程来启动电视，并且正确配置屏幕。



viewtopic.php?t=467209
如何通过softMCCS 2.5 在windows获取edid??????? @alexshots

ubuntu每次装好了n卡驱动都无法正确读取显示器型号，不管是vga线，还是dvi都一样，不知道是杂牌显示器问题，还是系统问题，烦。不删xorg.org就不能正确使用分辨率，只能通过nvidia-settings，生成的xorg.org，参数也不是一样对