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Daniel
Asked: 2025-02-12 04:47:11 +0800 CST

Dell Latitude 7490 风扇过热

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每个人！

我的戴尔 Latitude 7490 出现了问题 - 风扇以最大功率定期运转 15-20 分钟，但没有任何发热。笔记本电脑内部没有脏物。以下是温度传感器读数：

https://isstatic.askoverflow.dev/A2HIRk68.png

但是这台笔记本电脑还有另一个问题，即显示屏会冻结，我用和解决了这个问题i915.enable_dc=0，i915.enable_psr=0也许这是风扇的问题？..在 Intel Arch 主题上找到了修复程序。

我在网上只找到这篇文章有同样的问题。

我很高兴得到任何建议：D

dell

1 个回答

  1. Best Answer

    我发现看视频时戴尔风扇转得很快。但视频结束后戴尔风扇减速很慢。没计时过，但大概五分钟就慢下来了？

    $ sensors
dell_smm-virtual-0
Adapter: Virtual device
Processor Fan: 5200 RPM
Video Fan:     5000 RPM
CPU:            +72.0°C  
GPU:            +73.0°C  
SODIMM:         +71.0°C  

pch_skylake-virtual-0
Adapter: Virtual device
temp1:        +93.5°C  

coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +80.0°C  (high = +100.0°C, crit = +100.0°C)
Core 0:        +78.0°C  (high = +100.0°C, crit = +100.0°C)
Core 1:        +80.0°C  (high = +100.0°C, crit = +100.0°C)
Core 2:        +69.0°C  (high = +100.0°C, crit = +100.0°C)
Core 3:        +66.0°C  (high = +100.0°C, crit = +100.0°C)

    Grub 说明

    grub多年来，我的产品线添加了很多内容。以下是现在的内容：

    GRUB_CMDLINE_LINUX_DEFAULT="noplymouth 日志级别=3 fastboot acpiphp.disable=1 pcie_aspm=force vt.handoff=7 i915.fastboot=1 nopti nospectre_v2 nospec mem_sleep_default=deep nouveau.nomodeset=0 ipv6.disable_ipv6=1"

    我在我的文件中发现了一条较旧的注释掉的行，它grub与你的屏幕冻结问题有关，我不再使用它：

    #GRUB_CMDLINE_LINUX_DEFAULT="安静日志级别=0 vga=当前 udev.log-priority=3 快速启动 kaslr acpiphp.disable=1 i915.enable_rc6=0 i915.enable_psr=0 i915.preliminary_hw_support=1 i915.enable_hd_vgaarb=1 intel_idle.max_cstate=1 i915.enable_guc_loading=1 i915.enable_guc_submission pcie_aspm=force vt.handoff=7"

    因为不再需要您的这些屏幕冻结解决方案，所以我怀疑原因在于过时的 Nvidia 驱动程序。

    最后，我发现了多年来尝试过的各种东西的笔记，grub这些笔记现在都没有用了。里面可能有一些有用的东西：

    ##################### June 29 2018 - Tuxkiller2 theme ##############################

GRUB_BACKGROUND="/usr/share/grub/themes/Tuxkiller2/1600x900-TuxRestingOnWindowsTB.png"
# Mar 3, 2021: Above is the "terminal box" which is clipped version of full
#              screen version called "1600x900-TuxRestingOnWindows.jpg".
     GRUB_THEME="/usr/share/grub/themes/Tuxkiller2/theme.txt"
   GRUB_GFXMODE="1920x1080x32"
GRUB_GFXPAYLOAD_LINUX="keep"
      GRUB_FONT="/usr/share/grub/themes/Tuxkiller2/ubuntu_regular_28.pf2"
# GRUB_TERMINAL="gfxterm"
#GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.fastboot=1"
#GRUB_CMDLINE_LINUX_DEFAULT="noplymouth fastboot acpiphp.disable=1 pcie_aspm=force scsi_mod.use_blk_mq=1 vt.handoff=7 i915.enable_guc_loading=1 i915.enable_guc_submission=1 i915.edp_vswing=2 i915.enable_fbc=1 i915.fastboot=1 nopti nospectre_v2 nospec"
GRUB_CMDLINE_LINUX_DEFAULT="noplymouth loglevel=3 fastboot acpiphp.disable=1 pcie_aspm=force vt.handoff=7 i915.fastboot=1 nopti nospectre_v2 nospec mem_sleep_default=deep nouveau.nomodeset=0 ipv6.disable_ipv6=1"

# Jul 13/2019 - mem_sleep_default=deep from https://www.reddit.com/r/Dell/comments/8b6eci/xp_13_9370_battery_drain_while_suspended/
# Dec 27/2018 - intel_pstate=disable from: http://konkor.github.io/cpufreq/faq/#irqbalance-detected
# Dec 17/2018 - intel_pstate=no_hwp from: https://www.kernel.org/doc/html/v4.12/admin-guide/pm/intel_pstate.html
#               Takes pstate frequency control from hardware to software
# Oct 8/2018 -  Use scsi_mod.use_blk_mq=1 as per Ask Ubuntu to speed up NVMe:
#               https://askubuntu.com/questions/698395/poor-io-performance-
#               pcie-nvme-samsung-950-pro THIS ADDED A FEW SECONDS TO USERSPACE
# Aug 16/2018 - i915.edp_vswing=2 comes from Ask Ubuntu Dell XPS 15 9350 screen flickering:
#               https://askubuntu.com/a/1064747/307523
# Aug 11/2018 - 10% performance boost eliminating Meltdown & Spectre support:
#               "nopti nospectre_v2 nospec"
# Dec 13/2017 intel_iommu=igfx_off to fix rare error message related to virtualization which isn't used now.
# As per bug report: https://bbs.archlinux.org/viewtopic.php?id=176398 :
#  DMAR: DRHD: handling fault status reg 2
#  DMAR: [INTR-REMAP] Request device [f0:1f.0] fault
# Remove as boot went from 23 seconds to 46 seconds and screen flashed more

# November 27/2017 HDMI working with Nvidia drivers, but no sound so use hdmi-audio.service which requires
# early KMS to be off. Remove quiet & splash options for no plymouth.

# acpiphp.disable=1 to allow suspend to work with NVMe but disables hot plug.
# October 26/2017 HDMI isn't working but this isn't the cause of it. Try to update i915 drivers.

# pcie_aspm=force to get rid of syslog error message:
# ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
# Also a web site says it adds 20 minutes battery life too.

# kaslr randomizes address space so same modules aren't in same memory location each boot.
# https://askubuntu.com/questions/32999/what-is-vt-handoff-7-parameter-in-grub-cfg

# nomodeset turns off "nouveau" drivers for nVidia card
# This doesn't remove additional drivers section as hopeed plus negative effect of screen
# going full bright at log in.

# loglevel=3 vga=current as per Arch Linux posting at:
# https://wiki.archlinux.org/index.php/silent_boot
# this should prevent messages still appearing twice when `quiet` is used.

# loglevel=3 udev.log-priority=3 as per Reddit posting at:
# https://www.reddit.com/r/archlinux/comments/4br86x/setting_up_plymouth_efi_framebuffer/d1briv2/
# Same link also notes to set plymouth delay to 0.

# i915.enable_rc6=0 Fix screen flickering Kernel's > 4.12 https://bbs.archlinux.org/viewtopic.php?id=211399

# i915.enable_psr=0 screen flickering kernel's > 4.6 https://wiki.archlinux.org/index.php/intel_graphics#Skylake_support
# GRUB_CMDLINE_LINUX="console=tty12" # Redirect the kernel output to another tty

# video=SVIDEO-1:d eliminate blank screen boot from above archlinux.org link.

# Skylake optimization: https://wiki.archlinux.org/index.php/intel_graphics
#  i915.enable_guc_loading=1 i915.enable_guc_submission=1
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