Arch Linux

qsqcqs

Member

Registered: 2023-11-07

Posts: 18

unable to disable ibt via grub[closed]

despite adding

GRUB_CMDLINE_LINUX="net.ifnames=0 ibt=off"

to /etc/default/grub and making the config (/boot/grub/grub.conf also has ibt=off in it), ibt still seems to be enabled as

zcat /proc/config | grep IBT

returns

CONFIG_CC_HAS_IBT=y
CONFIG_X86_KERNEL_IBT=y
CONFIG_BT_HCIBTUSB=m
CONFIG_BT_HCIBTUSB_AUTOSUSPEND=y
CONFIG_BT_HCIBTUSB_POLL_SYNC=y
CONFIG_BT_HCIBTUSB_AUTO_ISOC_ALT=y
CONFIG_BT_HCIBTUSB_BCM=y
CONFIG_BT_HCIBTUSB_MTK=y
CONFIG_BT_HCIBTUSB_RTL=y
CONFIG_BT_HCIBTSDIO=m
CONFIG_BT_HCIBT3C=m

even after rebooting and whatnot which seems...weird?

Last edited by qsqcqs (2025-07-11 20:43:48)

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,725

Re: unable to disable ibt via grub[closed]

Not weird at all, changing the kernel command line will not change now the kernel was configured at build time. That doesn't mean it's active.

Why, though? The major issue was with nvidia, but that's not applicable on many setups, as anything with a new enough processor to have IBT is very unlikely to run the old, incompatible drivers.

Last edited by Scimmia (2025-07-11 19:47:19)

qsqcqs

Member

Registered: 2023-11-07

Posts: 18

Re: unable to disable ibt via grub[closed]

there shouldnt be any nvidia drivers but virtualbox is giving the same issues as the ibt thing so it seems like thats possibly the issue? As for trying to change it in the grub cmd line, that was the generally reccomended solution (setting ibt to be off as a kernel parameter)

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,725

Re: unable to disable ibt via grub[closed]

That was fixed 2 years ago.
https://www.virtualbox.org/ticket/21435