我有一台华硕 X551M 笔记本电脑 + ubuntu 22.04 + XFCE 所有软件包版本都是最新的。需要将平板电脑连接为第二台显示器。在互联网上搜索后，我找到了这篇文章 “平板电脑作为 Linux 的第二个屏幕”根据文章内容，我在配置中添加了显卡、显示器和屏幕的描述。以下是完整的配置：
#Native video card
Section "Device"
Identifier "Videocard0"
Driver "intel"
VendorName "Intel Corporation"
BoardName "Atom Processor Z36xxx/Z37xxx Series Graphics & Display"
VideoRam 64000
EndSection
#Dummy video card
Section "Device"
Identifier "Videocard1"
Driver "dummy"
VideoRam 128000
EndSection
Section "Monitor"
Identifier "Monitor0"
# Identifier "eDP1"
# Identifier "DP1"
# Identifier "HDMI1"
# Identifier "VGA1"
# Identifier "VIRTUAL1"
Option "Enable" "true"
DisplaySize 1366 768
#Modeline "1366x768 59.99*+
#Modelline "1280x720 59.74
#Modeline "1024x768 60.00
#Modeline "1024x576 60.00 59.90 59.82
#Modeline "960x540 60.00 59.63 59.82
#Modeline "800x600 60.32 56.25
#Modeline "864x486 60.00 59.92 59.57
#Modelline "640x480 59.94
#Modeline "720x405 59.51 60.00 58.99
#Modeline "680x384 60.00
#Modeline "640x360 59.84 59.32 60.00
EndSection
Section "Monitor"
Identifier "Monitor1"
Option "Enable" "true"
#DisplaySize 1920 1080
# HorizSync 10.0 - 300.0
# VertRefresh 10.0 - 200.0
# Modeline "1920x1200@10" 26.28 1920 1952 2048 2080 1200 1229 1231 1261
# Modeline "1920x1080@10" 23.53 1920 1952 2040 2072 1080 1106 1108 1135
# Modeline "1680x1050@10" 08/20 1680 1712 1784 1816 1050 1075 1077 1103
EndSection
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
# SubSection "Display"
#Virtual 1366 768
#EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Videocard1"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Virtual 1920 1080 #tablet resolution
Depth 24
Modes "1920x1080"
Modes "1366x768"
EndSubSection
EndSection
接下来，我声明了 ServerLayout 部分，因为 XFCE-Display 虚拟显示器看不到
#We set a scheme of 2 screens: left main, right dummy (tablet)
Section "ServerLayout"
Identifier "dummy_layout"
Screen 0 "Screen0"
# Screen 1 "Screen1" rightof "Screen0"
Option "Xinerama" "1"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
系统以这种形式启动正常吗？但如果我取消注释“Screen0”右侧的“Screen 1”行，则 Xorg 启动 - 我看到切换到图形模式，并且洪水崩溃，日志中出现错误
[404] (EE)
[404] (EE) Backtrace:
[405] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x139) [0x5627441f0979]
[406] (EE) 1: /lib/x86_64-linux-gnu/libc.so.6 (__sigaction+0x50) [0x7f8a81653520]
[407] (EE) unw_get_proc_name failed: no unwind info found [-10]
[407] (EE) 2: /usr/lib/xorg/modules/drivers/intel_drv.so (?+0x0) [0x7f8a80db8e68]
[408] (EE) unw_get_proc_name failed: no unwind info found [-10]
[408] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (?+0x0) [0x7f8a80e4dc8e]
[408] (EE) 4: /usr/lib/xorg/Xorg (DRI2CreateDrawable2+0x21f) [0x5627441a9f2f]
[409] (EE) 5: /usr/lib/xorg/modules/extensions/libglx.so (ht_dump_contents+0x6cf) [0x7f8a811fb1cf]
[410] (EE) unw_get_proc_name failed: no unwind info found [-10]
[410] (EE) 6: /usr/lib/xorg/modules/extensions/libglx.so (?+0x0) [0x7f8a811ed3d8]
[411] (EE) unw_get_proc_name failed: no unwind info found [-10]
[411] (EE) 7: /usr/lib/xorg/modules/extensions/libglx.so (?+0x0) [0x7f8a811f0023]
[411] (EE) 8: /usr/lib/xorg/Xorg (glvndGetExports+0x11eb) [0x5627441aff4b]
[412] (EE) 9: /usr/lib/xorg/Xorg (glvndGetExports+0x20a0) [0x5627441b0e00]
[412] (EE) 10: /usr/lib/xorg/Xorg (SendErrorToClient+0x365) [0x56274407a4c5]
[413] (EE) 11: /usr/lib/xorg/Xorg (InitFonts+0x3c4) [0x56274407e544]
[414] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_init_first+0x90) [0x7f8a8163ad90]
[415] (EE) 13: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0x80) [0x7f8a8163ae40]
[415] (EE) 14: /usr/lib/xorg/Xorg (_start+0x25) [0x562744067605]
[415] (EE)
[415] (EE) Segmentation fault at address 0x0
[415] (EE)
帮我理解一下。我无法附加正常启动的日志和出错的日志，我在论坛界面上看不到这种可能性