-3

enter image description here

This shows up when I startup Debian. Is this a problem, and how can I fix it?

  • 2
    Did you notice the error message with a URL to visit? – Stephen Kitt Jun 18 '18 at 16:19
3

The kernel is letting you know that your system needs additional firmware to enable all its features.

To install this firmware, you first need to enable the “non-free” repositories; as root, run

sed -i.bak 's/stretch[^ ]* main$/& contrib non-free/g' /etc/apt/sources.list

then

apt update

This will allow you to install the missing firmware:

apt install firmware-misc-nonfree firmware-iwlwifi

Then you need to update your initramfs:

update-initramfs -u

and reboot.

  • I did as you said, the installation was correct but the screen keeps apearing – Ander Aristondo Jun 21 '18 at 12:02
  • With exactly the same messages? – Stephen Kitt Jun 21 '18 at 12:03

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