我看过很多文章，但没有一个全面的指南可以解决这个非常常见的问题，特别是在没有 xorg.conf 文件的 Ubuntu 11.10 中。有没有简单的操作指南（对于像我这样的 Linux 新手）来完成此操作。我看过的其他文章需要相当多的 Linux 能力才能使它们工作。更好的是让 Ubuntu 自动检测这些类型的显示器。
我的屏幕是绿屏，而且驱动程序也已安装。但我就是无法在 Doublesight USB 显示器上看到图像。如有任何帮助，我将不胜感激。
答案1
这也许能帮助你实现这一目标。
Displaylink Doublesight DS-90U 显示器正在工作
1）安装构建 displaylink X 服务器所需的依赖项......
apt-get install xinit xserver-xorg xserver-xorg-dev xfonts-base libusb-dev xorg-dev git-core build-essential
2) 从以下网址下载并修复 xserver-xorg-video-displaylink 的源代码发射台并提取源代码。
tar xvfz xserver-xorg-video-displaylink_0.3.orig.tar.gz
cd xf86-video-displaylink
编辑src/displaylink.c
#graphical
gedit src/displaylink.c
#command line
nano src/displaylink.c
注释掉（在前面添加#）以下行...
//#include "xf86Resources.h"
//#include "xf86RAC.h"
// pScrn->racMemFlags = RAC_FB | RAC_COLORMAP | RAC_CURSOR | RAC_VIEWPORT;
// pScrn->racIoFlags = RAC_FB | RAC_COLORMAP | RAC_CURSOR | RAC_VIEWPORT;
// xf86CrtcScreenInit (pScreen);`
3）构建并安装
./configure && make && make install
sudo cp /usr/local/lib/xorg/modules/drivers/displaylink_drv.so /usr/lib/xorg/modules/drivers/
4）创建/etc/X11/xorg.conf
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "DisplayLinkScreen" 0 0
EndSection
Section "Device"
Identifier "DisplayLinkDevice"
Driver "displaylink"
Option "fbdev" "/dev/fb0"
EndSection
Section "Monitor"
Identifier "DisplayLinkMonitor"
# DS-90U is 1024x600 9-inch monitor - remove or change the DisplaySize for other devices
DisplaySize 190 115
EndSection
Section "Screen"
Identifier "DisplayLinkScreen"
Device "DisplayLinkDevice"
Monitor "DisplayLinkMonitor"
EndSection
5）将 Displaylink 显示器插入 USB 端口（屏幕应变为绿色）
6）重启或重新启动X
答案2
我按照上面描述的步骤操作，但出现这些错误，有人可以帮我解决吗？
./configure && make && make install checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... no checking for mawk... mawk checking whether make sets $(MAKE)... yes checking whether to enable maintainer-specific portions of Makefiles... no checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking for style of include used by make... GNU checking for gcc... gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking dependency style of gcc... gcc3 checking for a sed that does not truncate output... /bin/sed checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for fgrep... /bin/grep -F checking for ld used by gcc... /usr/bin/ld checking if the linker (/usr/bin/ld) is GNU ld... yes checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B checking the name lister (/usr/bin/nm -B) interface... BSD nm checking whether ln -s works... yes checking the maximum length of command line arguments... 1572864 checking whether the shell understands some XSI constructs... yes checking whether the shell understands "+="... yes checking for /usr/bin/ld option to reload object files... -r checking for objdump... objdump checking how to recognize dependent libraries... pass_all checking for ar... ar checking for strip... strip checking for ranlib... ranlib checking command to parse /usr/bin/nm -B output from gcc object... ok checking how to run the C preprocessor... gcc -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking for dlfcn.h... yes checking for objdir... .libs checking if gcc supports -fno-rtti -fno-exceptions... no checking for gcc option to produce PIC... -fPIC -DPIC checking if gcc PIC flag -fPIC -DPIC works... yes checking if gcc static flag -static works... yes checking if gcc supports -c -o file.o... yes checking if gcc supports -c -o file.o... (cached) yes checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes checking whether -lc should be explicitly linked in... no checking dynamic linker characteristics... GNU/Linux ld.so checking how to hardcode library paths into programs... immediate checking whether stripping libraries is possible... yes checking if libtool supports shared libraries... yes checking whether to build shared libraries... yes checking whether to build static libraries... no checking for gcc... (cached) gcc checking whether we are using the GNU C compiler... (cached) yes checking whether gcc accepts -g... (cached) yes checking for gcc option to accept ISO C89... (cached) none needed checking dependency style of gcc... (cached) gcc3 checking if RANDR is defined... yes checking if RENDER is defined... yes checking if XV is defined... yes checking for pkg-config... /usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes checking for XORG... yes checking whether xf86ConfigIsaEntity is declared... no checking for ANSI C header files... (cached) yes configure: creating ./config.status config.status: creating Makefile config.status: creating src/Makefile config.status: creating config.h config.status: config.h is unchanged config.status: executing depfiles commands config.status: executing libtool commands make all-recursive make[1]: Entering directory '/home/user/Téléchargements/xf86-video-displaylink' Making all in src make[2]: Entering directory '/home/user/Téléchargements/xf86-video-displaylink/src' /bin/bash ../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -fvisibility=hidden -I/usr/include/pixman-1 -I/usr/include/libdrm -I/usr/include/xorg -I/usr/include/X11/dri -g -O2 -MT displaylink.lo -MD -MP -MF .deps/displaylink.Tpo -c -o displaylink.lo displaylink.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I.. -fvisibility=hidden -I/usr/include/pixman-1 -I/usr/include/libdrm -I/usr/include/xorg -I/usr/include/X11/dri -g -O2 -MT displaylink.lo -MD -MP -MF .deps/displaylink.Tpo -c displaylink.c -fPIC -DPIC -o .libs/displaylink.o displaylink.c:42:22: fatal error: mibstore.h: Aucun fichier ou dossier de ce type compilation terminated. Makefile:302: recipe for target 'displaylink.lo' failed make[2]: *** [displaylink.lo] Error 1 make[2]: Leaving directory '/home/user/Téléchargements/xf86-video-displaylink/src' Makefile:274: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/home/user/Téléchargements/xf86-video-displaylink' Makefile:204: recipe for target 'all' failed make: *** [all] Error 2祝您有愉快的一天。谢谢