ISW / Ice-Sealed Wyvern

• isw started as an equivalent of "control tools by pherein" but under linux.
• It is meant to alter fan profiles of MSI laptops.
• Profiles for supported laptops are located in /etc/isw.conf.
• You can check /etc/isw.conf. comments for more details.

Warning

• Use it at your own risk!
• Secure boot can prevent access to the EC.
• isw is made/tested with MSI GS40 6QE under Arch/Manjaro, other laptops depend on user contribution.
• Check that your EC (Embedded Controler) work the same way, you can find documentation on the wiki.

How to install

Package or not package ?

• If you are using archlinux or a derivative you can install it from AUR:

  yay -S isw

• If you are on a different distro family:
  • Clone

    git clone https://github.com/YoyPa/isw

  • Then look at this PKGBUILD to know where to put files.
  • /!\ Path can change a bit depending on the distro /!\

Builtin or not builtin ?

• It need

  ec_sys

  module with option

  write_support=1

  , there are two scenario to set that:
  • ec_sys is a builtin kernel module:
  • add

    ec_sys.write_support=1

    in

    /etc/default/grub

    (Arch AUR package can't do it for you).
  • then update your grub with

    update-grub

    and reboot.
  • ec_sys is not a builtin kernel module:
  • copy both

    isw-ec_sys.conf

    files provided (/etc/mod[...]) with same path (Arch AUR package will do it for you).
  • then reboot OR

    modprobe ec_sys write_support=1

    .

How to use it ?

Current --help output

usage: isw [-h] [-b B] [-c] [-f FILE] [-p P] [-r [R]] [-s S S] [-t T] [-u USB] [-w W]

optional arguments:
  -h, --help            show this help message and exit
  -b B                  ┬ enable or disable CoolerBoost
                        └ replace B with off OR on
  -c                    ─ show an EC dump
  -f FILE, --file FILE  ┬ show profile in EC update file
                        └ replace FILE with FILE_NAME
  -p P                  ┬ show current profile in EC
                        └ replace P with SECTION_NAME
  -r [R]                ┬ show realtime CPU+GPU temp and fan speed from EC
                        ├ replace [R] with any [NUMBER] to perform a [NUMBER] of time(s)
                        └ Assume [0] if given nothing = infinite loop
  -s S S                ┬ set a single value into EC
                        ├ replace 1st S with ADDRESS in hexadecimal (0x00)
                        └ replace 2nd S with VALUE   in decimal     (00)
  -t T                  ┬ set the battery charging treshold
                        └ replace T with a NUMBER between 20 and 100 (٪)
  -u USB, --usb USB     ┬ set usb backlight level
                        └ replace USB with off, half OR full
  -w W                  ┬ write into EC
                        └ replace W with SECTION_NAME
┌─ TIPS ──────────────────────────────────────────────────────────────────┐
│ Set your config in '/etc/isw.conf'.                                     │
│ Arguments order is relevant, -c and -p can be used twice. Example:      │
│ isw -cw SECTION_NAME -c will show you EC dump before and after change.  │
├─ SUPPORT ───────────────────────────────────────────────────────────────┤
│ Help me support your laptop by providing following command output:      │
│ isw -cp MSI_ADDRESS_DEFAULT                                             │
│ via https://github.com/YoyPa/isw (open an issue).                       │
│ Make sure your dump is made before altering EC with isw, you can reset  │
│ your EC with a reboot or by changing power source.                      │
├─ NAME ──────────────────────────────────────────────────────────────────┤
│ ISW is MSI at 180°                                                      │
│ It means Ice-Sealed Wyvern in opposition to MSI's 'unleash the dragon'  │
└─────────────────────────────────────────────────────────────────────────┘

NB: all option exept -h and -f need priviledges.

An example

SECTIONNAME refer to the motherboard name inside

isw.conf

If you want to change temperature treshold and/or fan speed for cpu and/or gpu, you have to edit the corresponding section in

isw.conf

isw -w 14A1EMS1

If you want to check the current temperature and fan speed you will have to type

isw -r

Don't forget to read the comment at the beginning of

isw.conf

Launch at startup/resume

You can launch

isw -w [SECTION_NAME]

systemctl enable [email protected][SECTION_NAME].service

TODO

- Daemonisation
    - Launch at startup                            done
    - launch after resume (hibernation/suspend)    done
    - Launch at event(power source change)