Ubuntu 16.04+HP Envy 15温度异常偏高 始终不低于60℃求助

Hey Lucas, sorry to hear you're stuck with this frustrating overheating issue—especially after swapping out the motherboard and still hitting the same problem. Let's break down some actionable steps to get to the bottom of this, since the hardware swap didn't resolve things:

1. Inspect the Cooling System (Often Overlooked!) #

Since you've ruled out the motherboard, the cooling setup is the next critical suspect:

• Dust-clogged vents/fans: HP Envy models tend to accumulate dust in their tight airflow paths over time. Grab a can of compressed air, power off and unplug your laptop, then gently blow out the vents to clear any buildup. Even a thin layer of dust can cripple heat dissipation.
• Fan functionality check: Use the sensors tool to verify fan speeds are ramping up correctly under load. Install it first with:

  sudo apt-get install lm-sensors
  sudo sensors-detect
  sensors
  

  If fans are running slower than expected or not activating at all, the fan itself might be faulty, or the fan controller (even on a new motherboard) could be misconfigured.
• Thermal paste quality: New motherboards sometimes come with cheap, pre-applied thermal paste that dries out quickly. Reapplying a high-quality paste (like Arctic Silver or Noctua NT-H1) between the CPU/GPU and heatsink can drastically improve heat transfer.

2. Tweak Graphics Driver Settings #

You initially suspected the video chipset, so let's ensure your GPU drivers are optimized for Ubuntu 16.04:

• Switch to proprietary drivers: Open-source nouveau (for NVIDIA) or radeon (for AMD) drivers often lack efficient power management. Head to "Software & Updates" > "Additional Drivers" tab and install the recommended proprietary driver for your GPU.
• GPU power management: For NVIDIA GPUs, use nvidia-settings to access PRIME settings and set it to "On-demand"—this lets the laptop switch to the low-power integrated GPU during light tasks like web browsing, reducing heat output.
• Disable unnecessary graphics features: Turn off desktop compositing if you don't need it (via your desktop environment's settings) to lighten the GPU load.

3. Optimize System Power Management #

Ubuntu 16.04 has tools to cut down on unnecessary heat generation:

• Identify power-hungry components: Install powertop to spot processes or hardware drawing excess power:

  sudo apt-get install powertop
  sudo powertop
  

  Look for enabled "Wake-on-LAN" on unused interfaces, or background apps hogging CPU/GPU. Apply auto-tweaks with sudo powertop --auto-tune.
• CPU frequency scaling: Ensure your CPU can throttle down to lower frequencies when idle. Install cpufrequtils and set the governor to "powersave" for light use:

  sudo apt-get install cpufrequtils
  echo "GOVERNOR=\"powersave\"" | sudo tee /etc/default/cpufrequtils
  sudo systemctl restart cpufrequtils
  

4. Rule Out Software Conflicts #

Sometimes misbehaving apps or system corruption can cause unexpected heat:

• Monitor real-time resource usage: Use htop or top to check if any process is consistently using high CPU/GPU power even during web browsing. A rogue background app could be the culprit.
• Test with a live USB: Boot from a fresh Ubuntu 16.04 live USB. If the overheating stops, the issue is likely with your installed system (corrupted packages, misconfigurations) rather than hardware.

Since you've got data showing temperatures never drop below 60°C, these steps should help you narrow down whether the problem is with cooling, drivers, or system settings. Let me know if you need help interpreting any command outputs!

内容的提问来源于stack exchange，提问作者Lucas Aimaretto