我在 Fedora 16 (LXDE) 中使用两个显示器时遇到了问题。在启动时，两个显示器都在工作，但系统启动时，一个显示器自动关闭。这是意外发生的。以前我更新系统时也发生过这种情况，但后来我启动了较旧的内核版本，一切都正常，现在这没有帮助。
当它工作时它看起来像这样：
[marek@dev etc]$ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 8192 x 8192
VGA1 connected 1280x1024+1280+0 (normal left inverted right x axis y axis) 340mm x 270mm
1280x1024 75.0*+ 60.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 72.8 75.0 66.7 60.0
720x400 70.1
HDMI1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 340mm x 270mm
1280x1024 60.0*+ 75.0
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3
640x480 72.8 75.0 60.0
720x400 70.1
DP1 disconnected (normal left inverted right x axis y axis)
过去（当它与较旧的内核一起工作时）我尝试拔下正在工作的显示器（VGA1），只留下不工作的显示器（HDMI1）以查看会发生什么，然后在启动期间出现此消息并且显示器关闭“快速 tsc 校准失败显示器或显示问题”。我还没有尝试过，我应该吗？
现在看起来像这样：
[marek@dev ~]$ xrandr
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192
VGA1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 340mm x 270mm
1280x1024 75.0*+ 60.0
1280x960 60.0
1280x800 74.9 59.8
1152x864 75.0
1280x768 74.9 59.9
1024x768 75.1 70.1 60.0
1024x576 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
848x480 60.0
640x480 72.8 75.0 66.7 60.0
720x400 70.1
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
实际配置：
[marek@dev ~]$ sudo cat /etc/grub2.cfg | grep menuen
menuentry 'Fedora (3.6.6-1.fc16.x86_64)' --class fedora --class gnu-linux --class gnu --class os {
menuentry 'Fedora (3.6.5-2.fc16.x86_64)' --class fedora --class gnu-linux --class gnu --class os {
menuentry 'Fedora (3.6.2-1.fc16.x86_64)' --class fedora --class gnu-linux --class gnu --class os {
menuentry "Windows 7 (loader) (on /dev/sda1)" --class windows --class os {
[marek@dev ~]$ uname -a
Linux dev.fei.tuke.sk 3.6.2-1.fc16.x86_64 #1 SMP Wed Oct 17 05:30:01 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
[marek@dev ~]$ ls /etc/X11/xorg.conf
ls: cannot access /etc/X11/xorg.conf: No such file or directory
dmesg 在这里粘贴箱
AOC 是 VGA（可以正常工作），AOC 以前是 HDM1（现在不工作了），
[root@dev log]# grep AOC Xorg.*
Xorg.0.log:[ 27.809] (II) intel(0): Manufacturer: AOC Model: a725 Serial#: 35948
Xorg.0.log:[ 27.810] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 2209.148] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 2209.389] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 2209.454] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 2209.518] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 2209.587] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 2234.891] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 3702.200] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 4478.854] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 7918.207] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20067.874] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20276.535] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20279.588] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20391.441] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20395.051] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20411.719] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20423.927] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20489.721] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20501.000] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log:[ 20964.436] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log.old:[ 23.363] (II) intel(0): Manufacturer: AOC Model: a725 Serial#: 35948
Xorg.0.log.old:[ 23.364] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log.old:[ 30.197] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log.old:[ 30.384] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log.old:[ 30.448] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log.old:[ 30.515] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log.old:[ 30.820] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.0.log.old:[ 40.241] (II) intel(0): EDID vendor "AOC", prod id 42789
Xorg.9.log:[ 13.439] (II) intel(0): Manufacturer: AOC Model: a725 Serial#: 35948
Xorg.9.log:[ 13.439] (II) intel(0): EDID vendor "AOC", prod id 42789
[root@dev log]# grep HP Xorg.*
Xorg.9.log:[ 13.545] (II) intel(0): Monitor name: HP L1750
[root@dev log]# ls -l Xorg.*
-rw-r--r--. 1 root root 70017 Nov 16 13:36 Xorg.0.log
-rw-r--r--. 1 root root 43890 Nov 16 07:47 Xorg.0.log.old
-rw-r--r--. 1 root root 31884 Feb 27 2012 Xorg.9.log
非常感谢