Kernel options to make a laptop cooler (less warm)

With just chromium with 6 tabs open (no flash) my Dell E5400 is cruising at 60ºC--70ºC.
Other than chroium there is MonsterWM, dzen2 and netcfg in the background. So nothing too cpu intensive.
With which options should I compile my kernel to make my laptop as cool as possible?
Last edited by el mariachi (2012-04-19 15:37:37)

ludwis wrote:Are you sure it is a software problem? These are not normal temperatures for idle state. Maybe you just need to remove dust from inside. If you got these tempertures right after you bought this laptop, then it is probably damaged. As to the software side, do you use any kind of power saving features (like cpu frequency scaling or disabling unused devices)? Have a look at http://www.lesswatts.org.
Laptop is not new, but I cleaned it.
Ondemand, PM PCI, the powerdown script, 300Mhz clock, pcie_aspm=force, phc-intel undervolting, and still get those temps idling. There was one version of the 3.x kernel series that gave 30-ish ºC idling but I long lost track of which

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Hello all,
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I thought it would be a good thing to start with
http://wiki.archlinux.org/index.php/Kernel_Compilation_From_Source
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[13:50:26][luke@calculon][~/kernelbuild/linux-2.6.23]$ sudo mkinitcpio -k 2.6.23-MY_ARCH -g /boot/kernel26-my-arch.img
:: Begin build
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:: Parsing hook [udev]
:: Parsing hook [autodetect]
:: Parsing hook [pata]
ERROR: module 'sd[-_]mod' not found
ERROR: module 'sr[-_]mod' not found
:: Parsing hook [keymap]
:: Parsing hook [filesystems]
:: Generating module dependencies
:: Generating image '/boot/kernel26-my-arch.img'...SUCCESS
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--masterluke
Last edited by mmmasterluke (2008-02-13 13:47:56)

I tried to mkinitcpio with both scsi disk support built into the kernel and as a module both ways I am not able to make my system work with the new kernel.
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Hardware Information:
          MacBook Pro (17-inch, Early 2011)
          MacBook Pro - model: MacBookPro8,3
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          6 GB RAM
Video Information:
          Intel HD Graphics 3000 - VRAM: 384 MB
          AMD Radeon HD 6750M - VRAM: 1024 MB
System Software:
          OS X 10.9.2 (13C64) - Uptime: 0 days 0:59:22
Disk Information:
          TOSHIBA MK7559GSXF disk0 : (750.16 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) / [Startup]: 749.3 GB (407.34 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
          MATSHITADVD-R   UJ-898
USB Information:
          Apple Inc. FaceTime HD Camera (Built-in)
          Apple Inc. Apple Internal Keyboard / Trackpad
          Apple Inc. BRCM2070 Hub
                    Apple Inc. Bluetooth USB Host Controller
          PIXART USB OPTICAL MOUSE
          Western Digital External HDD     500.11 GB
                    EFI (disk1s1) <not mounted>: 209.7 MB
                    WD-KENKEN (disk1s2) <not mounted>: 499.76 GB
          Apple Computer, Inc. IR Receiver
FireWire Information:
          Iomega eGo HDD 800mbit - 800mbit max
                    disk2s1 (disk2s1) <not mounted>: 262 KB
                    Iomega_HDD (disk2s2) <not mounted>: 1 TB
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
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          at.obdev.nke.LittleSnitch          (4050 - SDK 10.8)
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          Dropbox
          RealPlayer Downloader Agent
Internet Plug-ins:
          FlashPlayer-10.6: Version: 12.0.0.44 - SDK 10.6 3rd-Party support link
          QuickTime Plugin: Version: 7.7.3
          Flash Player: Version: 12.0.0.44 - SDK 10.6 Outdated! Update
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Safari Extensions:
          Slick Savings: Version: 1.0
          Searchme: Version: 1.3
          Amazon Shopping Assistant: Version: 1.1
          Ebay Shopping Assistant: Version: 1.1
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 2.0 - SDK 10.9
          AppleAVBAudio: Version: 203.2 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins:
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               4%          WindowServer
               1%          EtreCheck
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[solved] fastboot and rootdelay kernel option

hi to all,
i was reading about improving boot time in our archwiki. it says to append in /boot/grub/menu.lst two ''magic'' words:
fastboot
and
rootdelay=N
where N are seconds to wait before mount the root.
then i modify my .lst and perform a boot timing BUT results are exactly the same , the same time with or without these kernel option.....
my menu.lst:
# (0) Arch Linux NORMAL
title Arch Linux
root (hd0,0)
kernel /vmlinuz26 root=/dev/sda4 ro fastboot rootdelay=1 vga=773
initrd /kernel26.img
# (3) Arch Linux BOOTCHART
title Arch Linux Bootchart
root (hd0,0)
kernel /vmlinuz26 root=/dev/sda4 ro fastboot rootdelay=1 vga=773 init=/sbin/bootchartd
initrd /kernel26.img
# (1) Arch Linux FALLBACK
title Arch Linux Fallback
root (hd0,0)
kernel /vmlinuz26 root=/dev/disk/by-uuid/87011ee4-6d50-4384-a305-0a23d3f27588 ro
initrd /kernel26-fallback.img
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title SystemRescueCd from Hard Disk
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kernel /sysrcd/rescue64 subdir=sysrcd setkmap=it
initrd /sysrcd/initram.igz
where i make a mistake ?
thks
Last edited by nTia89 (2010-08-04 19:01:16)

Kernel command line parameters aren't inherently magical. fastboot was introduced in 2.6.29 and attempts to decrease boot time by performing some functions asynchronously. It may not result in anything speeding up. It may break things. It's probably not worth using.
Regarding rootdelay: The Wiki comes to a flawed conclusion that a shorter rootdelay will decrease boot time. rootdelay defines the maximum number of seconds the kernel is willing to wait for the root device to be mounted. It doesn't define an absolute time frame. rootdelay=100 will very likely yield the same results as rootdelay=10 because the boot process continues as soon as the root device is available. The wiki does correctly point out that a lower rootdelay can actually break the boot process.
To answer your question: your mistake is playing with parameters that you don't understand.
Last edited by falconindy (2010-08-04 18:08:42)

Changing kernel options for Xorg.

Hi, all!
My video card (ATI Radeon) and monitor (Sun GDM-5410) combination cause problems with some kernels, ie, I get 'out of range' problems on my monitor. The default kernel on the Arch build is one of the distros that struggles with this.
I did an install of Gentoo the other day and using the Gentoo installation guid [0], ensured that everything was correctly 'switched-on' in the kernel and X was fine. I want to get Arch installed with X running properly, and was wondering what the best way is to ensure the kernel options are 'switched-on' and the kernel compiled properly. I don't need anything special like proprietary drivers, so I should just be able to take the stock Arch kernel and make my changes. Does Arch do this in a special 'Arch' way, or is there anything else I need to know?
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Cheers,
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Last edited by chris_debian (2011-01-25 16:49:25)

karol wrote:The wiki has article(s) about compiling a kernel.
https://wiki.archlinux.org/index.php/Kernel_Compilation
https://wiki.archlinux.org/index.php/Ke … rom_Source
Thank you. I guess the question is, if I compile an option into the kernel for my graphics card, will I have to do this every time the kernel is upgraded?
I'll look at the links you provided and hopefully things will be a bit clearer.
Ten years ago, I'd re-compile kernels without thinking about it. I guess that because the kernel now has such good hardware support, i'm a little out of practice. :-)
Thanks,
Chris.
Last edited by chris_debian (2011-01-28 07:04:09)

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1. Share-Media Browser-Large-Publish
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Why in the world would Apple make the track pad LESS useful in OS Lion? I hate that I can't g back to the top of a web page with a singe swipe. And of course all the other gestures are totally reversed. IMHO, this was not an imporvement.

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Try:
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- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
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Apple Retail Store - Genius Bar

Kernel options to make a laptop cooler (less warm)

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