因此，在系统启动时，我将 HDMI 放在另一个屏幕的右侧，到目前为止它一直有效。
最近 xrandr 检测到输出，但屏幕没有给出信号。
这不是电缆问题（通过两条电缆运行），也不是显示器问题（在第二台显示器上尝试过，我已经通过多种模式进行了更改。
下面是一些信息。
感谢帮助，谢谢
uname -a
Linux anon-pc 5.4.164-1-MANJARO #1 SMP PREEMPT Wed Dec 8 09:53:07 UTC 2021 x86_64 GNU/Linux
xrandr
Screen 0: minimum 320 x 200, current 2724 x 768, maximum 16384 x 16384
eDP-1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1366x768 60.00*+ 40.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
700x525 59.98
800x450 59.95 59.82
640x512 60.02
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
640x400 59.88 59.98
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
HDMI-1 connected 1360x768+1364+0 (normal left inverted right x axis y axis) 575mm x 323mm
1360x768 60.02*+
1920x1080 60.00 50.00 59.94
1920x1080i 60.00 50.00 59.94
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
800x600 75.00 60.32
720x576 50.00
720x576i 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 75.00 60.00 59.94
720x400 70.08
sudo dmesg |grep intel
[ 0.640850] intel_idle: MWAIT substates: 0x11142120
[ 0.640851] intel_idle: v0.4.1 model 0x8E
[ 0.641098] intel_idle: lapic_timer_reliable_states 0xffffffff
[ 0.647417] intel_pstate: Intel P-state driver initializing
[ 0.647618] intel_pstate: HWP enabled
[ 0.647735] intel_pmc_core INT33A1:00: initialized
[ 12.201799] intel_rapl_common: Found RAPL domain package
[ 12.201801] intel_rapl_common: Found RAPL domain dram
[ 12.279766] acpi INT33D6:00: intel-vbtn: created platform device
[ 12.281146] intel-vbtn INT33D6:00: failed to read Intel Virtual Button driver
[ 12.672340] intel_rapl_common: Found RAPL domain package
[ 12.672342] intel_rapl_common: Found RAPL domain core
[ 12.672343] intel_rapl_common: Found RAPL domain uncore
[ 12.672344] intel_rapl_common: Found RAPL domain dram
[ 12.837263] fb0: switching to inteldrmfb from EFI VGA
[ 12.871815] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 15.223788] audit: type=1130 audit(1640445743.052:16): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-backlight@backlight:intel_backlight comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 18.966483] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-22.50.19.14.f.bseq
sudo dmesg |grep vga
[ 0.380830] pci 0000:00:02.0: vgaarb: setting as boot VGA device
[ 0.380830] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 0.380830] pci 0000:00:02.0: vgaarb: bridge control possible
[ 0.380830] vgaarb: loaded
[ 12.837429] i915 0000:00:02.0: vgaarb: deactivate vga console
[ 12.839424] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Device 5906 (rev 02)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 02)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point LPC Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
02:00.0 Network controller: Intel Corporation Dual Band Wireless-AC 3168NGW [Stone Peak] (rev 10)
答案1
很可能是硬件问题...抱歉大家