当尝试通过 Display 端口将 Dell P2213t 连接到计算机时，启动过程中屏幕空白（仍然显示 Grub）。Ctrl+Alt+F2 也不起作用，但计算机似乎已启动，因为硬重启提示进行磁盘检查。
在双显示器设置中，我在显示设置中可以正常看到两个显示器，但扩展版本导致显示端口空白（HDMI 工作正常），而镜像配置工作正常。我想知道如何让它在扩展模式下工作？
PC 规格：Linux 版本 6.2.0-26-generic (buildd@bos03-amd64-042) (x86_64-linux-gnu-gcc-11 (Ubuntu 11.3.0-1ubuntu1~22.04.1) 11.3.0，GNU ld (Ubuntu 的 GNU Binutils) 2.38) #26~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC
发行版：Ubuntu 22.04.3 LTS
System:
Kernel: 6.2.0-26-generic x86_64 bits: 64 compiler: N/A Desktop: GNOME 42.9
tk: GTK 3.24.33 wm: gnome-shell dm: GDM3 42.0
Distro: Ubuntu 22.04.3 LTS (Jammy Jellyfish)
Machine:
Type: Desktop System: ASUS product: N/A v: N/A serial: <superuser required>
Mobo: ASUSTeK model: PRIME B660-PLUS D4 v: Rev 1.xx
serial: <superuser required> UEFI: American Megatrends v: 2603
date: 06/30/2023
CPU:
Info: 6-core model: 12th Gen Intel Core i5-12500 bits: 64 type: MT MCP
smt: enabled arch: Alder Lake rev: 5 cache: L1: 480 KiB L2: 7.5 MiB
L3: 18 MiB
Speed (MHz): avg: 2633 high: 3000 min/max: 800/5900 cores: 1: 800 2: 3000
3: 3000 4: 3000 5: 801 6: 3000 7: 3000 8: 3000 9: 3000 10: 3000 11: 3000
12: 3000 bogomips: 71884
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: AMD Navi 23 [Radeon RX 6600/6600 XT/6600M] vendor: ASRock
driver: amdgpu v: kernel pcie: speed: 16 GT/s lanes: 16 ports:
active: DP-1,HDMI-A-1 empty: DP-2,DP-3 bus-ID: 03:00.0 chip-ID: 1002:73ff
class-ID: 0300
Display: x11 server: X.Org v: 1.21.1.4 compositor: gnome-shell driver: X:
loaded: modesetting gpu: amdgpu display-ID: :0 screens: 1
Screen-1: 0 s-res: 1280x1024 s-dpi: 96 s-size: 339x271mm (13.3x10.7")
s-diag: 434mm (17.1")
Monitor-1: DP-1 pos: primary,1-1 model: Dell P2213 serial: <filter>
res: 1280x1024 hz: 75 dpi: 69 size: 473x296mm (18.6x11.7")
diag: 558mm (22") modes: max: 1680x1050 min: 720x400
Monitor-2: HDMI-1 mapped: HDMI-A-1 pos: primary,1-1 model: Sony CPD-G520
serial: <filter> res: 1280x1024 hz: 85 dpi: 84 size: 388x291mm (15.3x11.5")
diag: 500mm (19.7") modes: max: 1280x1024 min: 720x400
OpenGL:
renderer: AMD Radeon RX 6600 (navi23 LLVM 15.0.7 DRM 3.49 6.2.0-26-generic)
v: 4.6 Mesa 23.0.4-0ubuntu1~22.04.1 direct render: Yes
Audio:
Device-1: Intel vendor: ASUSTeK driver: snd_hda_intel v: kernel
bus-ID: 00:1f.3 chip-ID: 8086:7ad0 class-ID: 0403
Device-2: AMD Navi 21 HDMI Audio [Radeon RX 6800/6800 XT / 6900 XT]
driver: snd_hda_intel v: kernel pcie: speed: 16 GT/s lanes: 16
bus-ID: 03:00.1 chip-ID: 1002:ab28 class-ID: 0403
Device-3: Creative Labs Sound Core3D [Sound Blaster Recon3D / Z-Series]
driver: snd_hda_intel v: kernel pcie: speed: 2.5 GT/s lanes: 1
bus-ID: 08:00.0 chip-ID: 1102:0012 class-ID: 0403
Sound Server-1: ALSA v: k6.2.0-26-generic running: yes
Sound Server-2: PulseAudio v: 15.99.1 running: yes
Sound Server-3: PipeWire v: 0.3.48 running: yes
镜像时 randr 输出：
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 16384 x 16384
DP-1 connected primary 1280x1024+0+0 (normal left inverted right x axis y axis) 473mm x 296mm
1680x1050 59.95 + 59.95
1400x1050 59.95
1600x900 59.95
1280x1024 75.02* 60.02 59.95
1440x900 59.95
1400x900 59.95
1280x960 59.95
1440x810 59.95
1368x768 59.95
1280x800 59.95 59.95
1152x864 75.00 59.95
1280x720 59.95 59.95
1024x768 75.03 60.00 59.95
960x720 59.95
928x696 59.95
896x672 59.95
1024x576 59.95
960x600 59.95
832x624 59.95
960x540 59.95
800x600 75.00 60.32 59.95
840x525 59.95
864x486 59.95
700x525 59.95
800x450 59.95
640x512 59.95
700x450 59.95
640x480 75.00 59.95 59.94
720x405 59.95
720x400 70.08
684x384 59.95
576x432 59.95
640x360 59.95
512x384 59.95
512x288 59.95
416x312 59.95
480x270 59.95
400x300 59.95
432x243 59.95
320x240 59.95
360x202 59.95
320x180 59.95
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 388mm x 291mm
1280x1024 85.02*+ 85.02 75.02
1280x960 85.02
1280x800 85.02 85.02
1152x864 85.02 85.06 75.00
1280x720 85.02 60.00
1024x768 85.00 85.02 75.03 70.07 60.00
1024x768i 85.02
960x720 85.02
928x696 85.02
896x672 85.02
1024x576 85.02
960x600 85.02
832x624 85.02 74.55
960x540 85.02
800x600 85.06 85.02 72.19 75.00 60.32 56.25
840x525 85.02
864x486 85.02
700x525 85.02
800x450 85.02
640x512 85.02
700x450 85.02
640x480 85.02 75.00 72.81 66.67 59.94
720x405 85.02
720x400 87.85 85.02 70.08
684x384 85.02
640x400 85.02
576x432 85.02
640x360 85.02
640x350 85.02
512x384 85.02
512x384i 85.02
512x288 85.02
416x312 85.02
480x270 85.02
400x300 85.02
432x243 85.02
320x240 85.02
360x202 85.02
360x200 85.02
320x200 85.02
320x180 85.02
320x175 85.02