我新安装了 ubuntu server 23.04，发现空闲时的 CPU 使用率相当高 (~0.5)，经过进一步调查，我发现 kworker 会定期（大约每 20 秒左右）启动并占用 100% 的单核。运行后，sudo perf record -g -a sleep 10我认为问题出在英特尔驱动程序（intel_hdmi_detect 及更高版本）上，如屏幕截图所示性能截图问题是我真的不知道该如何处理这个问题，我该怎么办？
$ lspci
00:00.0 Host bridge: Intel Corporation 8th Gen Core 4-core Desktop Processor Host Bridge/DRAM Registers [Coffee Lake S] (rev 08)
00:01.0 PCI bridge: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) (rev 08)
00:02.0 Display controller: Intel Corporation CoffeeLake-S GT2 [UHD Graphics 630]
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Cannon Lake PCH Thermal Controller (rev 10)
00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10)
00:14.2 RAM memory: Intel Corporation Cannon Lake PCH Shared SRAM (rev 10)
00:15.0 Serial bus controller: Intel Corporation Cannon Lake PCH Serial IO I2C Controller #0 (rev 10)
00:15.1 Serial bus controller: Intel Corporation Cannon Lake PCH Serial IO I2C Controller #1 (rev 10)
00:16.0 Communication controller: Intel Corporation Cannon Lake PCH HECI Controller (rev 10)
00:16.1 Communication controller: Intel Corporation Device a361 (rev 10)
00:16.4 Communication controller: Intel Corporation Cannon Lake PCH HECI Controller #2 (rev 10)
00:17.0 SATA controller: Intel Corporation Cannon Lake PCH SATA AHCI Controller (rev 10)
00:1b.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #17 (rev f0)
00:1c.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #1 (rev f0)
00:1d.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #9 (rev f0)
00:1d.1 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #10 (rev f0)
00:1d.2 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #11 (rev f0)
00:1e.0 Communication controller: Intel Corporation Cannon Lake PCH Serial IO UART Host Controller (rev 10)
00:1f.0 ISA bridge: Intel Corporation Cannon Point-LP LPC Controller (rev 10)
00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
00:1f.5 Serial bus controller: Intel Corporation Cannon Lake PCH SPI Controller (rev 10)
01:00.0 Ethernet controller: Mellanox Technologies MT27500 Family [ConnectX-3]
03:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller 980
04:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)
05:00.0 PCI bridge: ASPEED Technology, Inc. AST1150 PCI-to-PCI Bridge (rev 04)
06:00.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 41)
07:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)
$ sudo dmidecode -t 2
# dmidecode 3.4
Getting SMBIOS data from sysfs.
SMBIOS 3.2.0 present.
Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: ASRockRack
Product Name: E3C246D4U
Version:
Serial Number: 111111111111111
Asset Tag:
Features:
Board is a hosting board
Board is replaceable
Location In Chassis:
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0