![Raspberry Pi 5 上的风扇速度控制在 Ubuntu 23.10 中不起作用](https://linux22.com/image/1198239/Raspberry%20Pi%205%20%E4%B8%8A%E7%9A%84%E9%A3%8E%E6%89%87%E9%80%9F%E5%BA%A6%E6%8E%A7%E5%88%B6%E5%9C%A8%20Ubuntu%2023.10%20%E4%B8%AD%E4%B8%8D%E8%B5%B7%E4%BD%9C%E7%94%A8.png)
在 Raspberry Pi 5 上运行 Ubuntu 23.10 时,风扇速度控制似乎不起作用。风扇始终以接近最大速度运行,并且无论 CPU 温度如何,cur_state
输入/sys/class/thermal/cooling_device0/
都会停留在 的值4
。我怀疑这与 Raspberry Pi OS 上报告的此故障有关:https://forums.raspberrypi.com/viewtopic.php?t=356881
还有其他人成功做到这一点吗?
答案1
此问题已作为内核更新的一部分得到修复。
您可以使用以下命令更新您的 Ubuntu Server 安装:
sudo apt update
sudo apt upgrade
重新启动后,风扇速度将按预期运行。
答案2
现在 ppa:waveform/fan-fix 中有一个内核构建补丁 (https://launchpad.net/~waveform/+archive/ubuntu/fan-fix) 应作为临时修复,直到下一个内核版本发布。这允许风扇速度控制工作,但有人担心滞后被忽略,因此这可能不是最终的修复。
答案3
这很烦人,我一直在做的只是交换值,直到我们得到一个新的稳定内核:
sudo bash
cat > /sys/class/thermal/cooling_device0/cur_state
2
<CTRL-D>
答案4
我也对此感到烦恼,决定让 Python 完成所有工作。请随意使用https://pastebin.com/SbFb4LYE。
from subprocess import run as srun, PIPE
from time import sleep
from datetime import timedelta as td, datetime as dt
## Use step values to activate desired FAN value
STEP1 = 48
STEP2 = 60
STEP3 = 65
STEP4 = 72
SLEEP_TIMER = 1
TICKS = 3
DELTA_TEMP = 3
DATETIME_FORMAT = '%Y-%m-%d %H:%M:%S'
fanControlFile = '/sys/class/thermal/cooling_device0/cur_state'
def main():
print("Running FAN control for RPI5 Ubuntu")
t0 = dt.now()
command = f'tee -a {fanControlFile} > /dev/null'
oldSpeed = 0
ticks = 0
speed = 1
lastTemp = 0
while True:
sleep(SLEEP_TIMER) # force 1 second timer, just to reduce polling calls
t1 = dt.now()
if(t1 + td(minutes=TICKS) > t0):
t0 = t1
tempOut = getOutput('vcgencmd measure_temp')
try:
cels = int(tempOut.split('temp=')[1][:2])
except:
cels = 40
if STEP1 < cels < STEP2:
speed = 1
elif STEP2 < cels < STEP3:
speed = 2
elif STEP3 < cels < STEP4:
speed = 3
elif cels >= STEP4:
speed = 4
deltaTempNeg = lastTemp - DELTA_TEMP
deltaTempPos = lastTemp + DELTA_TEMP
if oldSpeed != speed and not(deltaTempNeg <= cels <= deltaTempPos):
print(f'oldSpeed: {oldSpeed} | newSpeed: {speed}')
print(f'{deltaTempNeg}ºC <= {cels}ºC <= {deltaTempPos}ºC')
print(f'{"#"*30}\n' +
f'Updating fan speed!\t{t0.strftime(DATETIME_FORMAT)}\n' +
f'CPU TEMP: {cels}ºC\n' +
f'FAN speed will be set to: {speed}\n' +
f'{"#"*30}\n')
_command = f'echo {speed} | sudo {command}'
callShell(_command, debug=True)
checkVal = getOutput(f'cat {fanControlFile}')
print(f'Confirm FAN set to speed: {checkVal}')
oldSpeed = speed
lastTemp = cels
ticks = 0
# Log minor details
ticks += 1
if(ticks > TICKS * 3):
ticks = 0
print(f'Current Temp is: {cels}ºC\t{t0.strftime(DATETIME_FORMAT)}')
def callShell(cmd, shell=True, debug=False):
if debug:
print(f'Calling: [{cmd}]')
return srun(f'''{cmd}''', stdout=PIPE, shell=shell)
def getOutput(cmd, shell=True):
stdout = callShell(cmd, shell=shell).stdout
try:
stdout = stdout.decode('utf-8')
except:
pass
return stdout
## RUN SCRIPT
main()