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15,629
Votes: 3
Tags:
linux-mint
usb
grub
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URL:
https://unix.stackexchange.com/q/332044
Title:
USB 3.0 not working in linux mint
ID:
/2016/12/21/USB-3.0-not-working-in-linux-mint
Created:
December 21, 2016
Edited: July 18, 2018
Upload:
October 19, 2025
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Use whatever text editor to edit the following file as root:
/etc/default/grub
The editor will open showing you the contents of grub configuration file. Search for this line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Change the line by adding iommu=soft and now the line will look like this:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash iommu=soft"
Save the file and exit text editor.
Now, type to the terminal:
sudo update-grub
Finally, reboot your PC and the recommended change takes effect. Hopefully all your USB 3 ports are working now.
Besides the recommendation you were seeking help on I would look in your BIOS and carefully examine all USB related options.