我的带有 Ubuntu18.04 的 Thinkpad E495 在关机/重启时停止/冻结在黑屏中。尽管如此，即使我需要通过电源按钮硬关机，它也能正常启动。在 grub 中禁用quiet splash，但在关闭时它不显示任何日志。我尝试用sudo reboot -dor重启，sudo reboot -f但它仍然以黑屏结束。
系统规格：AMD Ryzen 5 3500U 集成 AMD Radeon vega Graphics
...@ThinkPad-E495:~$ uname --kernel-release
5.3.0-53-generic
...@ThinkPad-E495:~$ sudo lshw -short
H/W path Device Class Description
=======================================================
system 20NECTO1WW (LENOVO_MT_20NE_BU_Think_FM_ThinkPad E495)
/0 bus 20NECTO1WW
/0/1 memory 16GiB System Memory
/0/1/0 memory 8GiB SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0,4 ns)
/0/1/1 memory 8GiB SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0,4 ns)
/0/3 memory 384KiB L1 cache
/0/4 memory 2MiB L2 cache
/0/5 memory 4MiB L3 cache
/0/6 processor AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
/0/e memory 128KiB BIOS
/0/100 bridge Advanced Micro Devices, Inc. [AMD]
/0/100/0.2 generic Advanced Micro Devices, Inc. [AMD]
/0/100/1.1 bridge Advanced Micro Devices, Inc. [AMD]
/0/100/1.1/0 storage NVMe SSD Controller SM981/PM981
/0/100/1.2 bridge Advanced Micro Devices, Inc. [AMD]
/0/100/1.2/0 enp2s0 network RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
/0/100/1.3 bridge Advanced Micro Devices, Inc. [AMD]
/0/100/1.3/0 generic RTS522A PCI Express Card Reader
/0/100/1.6 bridge Advanced Micro Devices, Inc. [AMD]
/0/100/1.6/0 wlp4s0 network RTL8822BE 802.11a/b/g/n/ac WiFi adapter
/0/100/8.1 bridge Advanced Micro Devices, Inc. [AMD]
/0/100/8.1/0 display Picasso
/0/100/8.1/0.1 multimedia Advanced Micro Devices, Inc. [AMD/ATI]
/0/100/8.1/0.2 generic Advanced Micro Devices, Inc. [AMD]
/0/100/8.1/0.3 bus Advanced Micro Devices, Inc. [AMD]
/0/100/8.1/0.3/0 usb1 bus xHCI Host Controller
/0/100/8.1/0.3/1 usb2 bus xHCI Host Controller
/0/100/8.1/0.4 bus Advanced Micro Devices, Inc. [AMD]
/0/100/8.1/0.4/0 usb3 bus xHCI Host Controller
/0/100/8.1/0.4/0/1 communication Bluetooth Radio
/0/100/8.1/0.4/0/2 multimedia Integrated Camera
/0/100/8.1/0.4/1 usb4 bus xHCI Host Controller
/0/100/8.1/0.5 multimedia Advanced Micro Devices, Inc. [AMD]
/0/100/8.1/0.6 multimedia Advanced Micro Devices, Inc. [AMD]
/0/100/14 bus FCH SMBus Controller
/0/100/14.3 bridge FCH LPC Bridge
/0/101 bridge Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
/0/102 bridge Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
/0/103 bridge Advanced Micro Devices, Inc. [AMD]
/0/104 bridge Advanced Micro Devices, Inc. [AMD]
/0/105 bridge Advanced Micro Devices, Inc. [AMD]
/0/106 bridge Advanced Micro Devices, Inc. [AMD]
/0/107 bridge Advanced Micro Devices, Inc. [AMD]
/0/108 bridge Advanced Micro Devices, Inc. [AMD]
/0/109 bridge Advanced Micro Devices, Inc. [AMD]
/0/10a bridge Advanced Micro Devices, Inc. [AMD]
/1 power 01AV446
/2 docker0 network Ethernet interface
我很高兴为您提供任何日志，只需指出正确的方向即可。现在，我不知道要查找哪些日志或哪些关键字。