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如何禁用 Ubuntu 的风扇速度控制

tag-icon • tag-icon fan temperature sensors lm-sensors gigabyte
如何禁用 Ubuntu 的风扇速度控制

我有 Ubuntu 22.04（内核版本：5.17.5-051705-generic）和 Windows 10 的双启动。使用 Windows 时，风扇安静地运转，而使用 Ubuntu 时，风扇似乎设置为最大速度。在这两种情况下，系统都没有负载。

我试图验证传感器发生的情况，但是我的主板（Gigabyte Z690 Gaming X）的 I/O 芯片不受传感器检测支持：

Some Super I/O chips contain embedded sensors. We have to write to
standard I/O ports to probe them. This is usually safe.
Do you want to scan for Super I/O sensors? (YES/no): 
Probing for Super-I/O at 0x2e/0x2f
Trying family `National Semiconductor/ITE'...               No
Trying family `SMSC'...                                     No
Trying family `VIA/Winbond/Nuvoton/Fintek'...               No
Trying family `ITE'...                                      Yes
Found unknown chip with ID 0x8689
Probing for Super-I/O at 0x4e/0x4f
Trying family `National Semiconductor/ITE'...               No
Trying family `SMSC'...                                     No
Trying family `VIA/Winbond/Nuvoton/Fintek'...               No
Trying family `ITE'...                                      No

传感器输出：

xxxx@xxxx-pc:~$ sensors
coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +31.0°C  (high = +80.0°C, crit = +100.0°C)
Core 0:        +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 4:        +27.0°C  (high = +80.0°C, crit = +100.0°C)
Core 8:        +27.0°C  (high = +80.0°C, crit = +100.0°C)
Core 12:       +27.0°C  (high = +80.0°C, crit = +100.0°C)
Core 16:       +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 20:       +25.0°C  (high = +80.0°C, crit = +100.0°C)
Core 28:       +25.0°C  (high = +80.0°C, crit = +100.0°C)
Core 29:       +25.0°C  (high = +80.0°C, crit = +100.0°C)
Core 30:       +25.0°C  (high = +80.0°C, crit = +100.0°C)
Core 31:       +25.0°C  (high = +80.0°C, crit = +100.0°C)

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +16.8°C  (crit = +20.8°C)
temp2:        +27.8°C  (crit = +105.0°C)

nouveau-pci-0100
Adapter: PCI adapter
fan1:        1787 RPM
temp1:        +37.0°C  (high = +95.0°C, hyst =  +3.0°C)
                       (crit = +105.0°C, hyst =  +5.0°C)
                       (emerg = +135.0°C, hyst =  +5.0°C)

nvme-pci-0200
Adapter: PCI adapter
Composite:    +40.9°C  (low  =  -0.1°C, high = +79.8°C)
                       (crit = +81.8°C)
Sensor 1:     +40.9°C  (low  = -273.1°C, high = +65261.8°C)

我已经在 UEFI 中配置了风扇速度斜率，并且 Windows 下的行为与它一致，所以我试图了解 Ubuntu 以某种方式“覆盖”它时发生了什么。

这怎么可能呢？我该如何防止呢？

编辑：问题也发生在内核为 5.15 的 Ubuntu 22.04 上，但不会发生在内核为 5.13 的 Ubuntu 20.04 上

答案1

我觉得自己很蠢，但我解决了这个问题。原来，噪音不是主板上的风扇引起的，而是 GPU 风扇。安装 Nvidia 驱动程序（而不是 nouveau）后，GPU 风扇在没有负载的情况下无法达到高速。

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