Arch Linux

Welt

Member

Registered: 2020-09-04

Posts: 66

[SOLVED] Is there a way to Disable HT automaticly and permanantly

Hey guys i'm using an old and oem motherboard and that's why i can't do this from bios. My computer is asus n550jv and i want to disable hyper threading i saw something on internet on grub loader we can just enter noht to parameters and it will disable it automaticly but i'm using systemd-boot and i entered no ht to parameters and it has no effect on hyper threading. Should i do it manually everytime or is there a way to disable it. I didn't seen something like this on arch wiki.

Last edited by Welt (2020-09-07 06:49:18)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,372

Re: [SOLVED] Is there a way to Disable HT automaticly and permanantly

The option you want is nosmt, or since the CPU mitigations have crept up there are a variety of CPU mitigation options that will implicitly enforce it where the "global" variant is

mitigations=auto,nosmt

Last edited by V1del (2020-09-06 20:56:14)

Welt

Member

Registered: 2020-09-04

Posts: 66

Re: [SOLVED] Is there a way to Disable HT automaticly and permanantly

The option you want is nosmt, or since the CPU mitigations have crept up there are a variety of CPU mitigation options that will implicitly enforce it where the "global" variant is

mitigations=auto,nosmt

Thx for the reply should i add this to kernel parameters or is it gonna boot everytime automaticly ?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,372

Re: [SOLVED] Is there a way to Disable HT automaticly and permanantly

Well yes these are kernel parameters so you need to add them there.

Welt

Member

Registered: 2020-09-04

Posts: 66

Re: [SOLVED] Is there a way to Disable HT automaticly and permanantly

Well yes these are kernel parameters so you need to add them there.

Hey i added it to my kernel paramaters but it doesn't work. I may did something wrong. This is the file location /boot/loader/entries/arch.conf. This is the inside of the file

 title Arch Linux

linux /vmlinuz-linux

initrd /intel-ucode.img

initrd /initramfs-linux.img

options root=UUID=3a080b46-ee2f-476e-9e39-fa752567f377 rw

mitigations=auto,nosmt

loqs

Member

Registered: 2014-03-06

Posts: 19,047

Re: [SOLVED] Is there a way to Disable HT automaticly and permanantly

The mititgations entry needs to be passed to the kernel by being on the options line.  https://wiki.archlinux.org/index.php/Ke … stemd-boot

Welt

Member

Registered: 2020-09-04

Posts: 66

Re: [SOLVED] Is there a way to Disable HT automaticly and permanantly

The mititgations entry needs to be passed to the kernel by being on the options line.  https://wiki.archlinux.org/index.php/Ke … stemd-boot

Thx for your helps it's solved.