戴尔 5471 Ubuntu 16.04 风扇噪音和过热

我的电脑用了2个月。在最初的几个月里，如果电脑工作很辛苦或天气太热，那么电脑就会启动风扇并完成工作。现在，当我打开计算机风扇启动时（例如，如果我打开刚刚启动的浏览器风扇噪音并一直持续下去：（）我不知道有什么问题。请帮助我解决这个问题。

• 我做了 BIOS 闪存更新。
• 我下载了 i8kmom （但该程序以 1 秒的间隔打开和关闭，所以我删除了它。

传感器输出：

    acpitz-virtual-0
Adapter: Virtual device
temp1:        +25.0°C  (crit = +107.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +40.0°C  (high = +100.0°C, crit = +100.0°C)
Core 0:         +38.0°C  (high = +100.0°C, crit = +100.0°C)
Core 1:         +38.0°C  (high = +100.0°C, crit = +100.0°C)
Core 2:         +38.0°C  (high = +100.0°C, crit = +100.0°C)
Core 3:         +37.0°C  (high = +100.0°C, crit = +100.0°C)

dell_smm-virtual-0
Adapter: Virtual device
Processor Fan: 3065 RPM
CPU:            +39.0°C  
Ambient:        +35.0°C  
SODIMM:         +37.0°C  
Other:          +40.0°C  

lspci | grep VGA 输出：

00:02.0 VGA compatible controller: Intel Corporation Device 5917 (rev 07)

lspci 输出：

    00:00.0 Host bridge: Intel Corporation Device 5914 (rev 08)
00:02.0 VGA compatible controller: Intel Corporation Device 5917 (rev 07)
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 08)
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)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI (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 Device 9d10 (rev f1)
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port (rev f1)
00:1f.0 ISA bridge: Intel Corporation Device 9d4e (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260/M265] (rev c1)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
03:00.0 Network controller: Intel Corporation Wireless 3165 (rev 79)