It looks like the Debian kernel source switch from using bz to xz compression a while ago.
https://kernel-handbook.alioth.debian.org/ch-source.html --- manual/en/post-install/kernel-baking.xml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/manual/en/post-install/kernel-baking.xml b/manual/en/post-install/kernel-baking.xml index 6013732..2cfbab6 100644 --- a/manual/en/post-install/kernel-baking.xml +++ b/manual/en/post-install/kernel-baking.xml @@ -102,7 +102,7 @@ permissions. </footnote>. We'll also assume that your kernel version is &kernelversion;. Make sure you are in the directory to where you want to unpack the kernel sources, extract them using -<userinput>tar xjf /usr/src/linux-source-&kernelversion;.tar.bz2</userinput> +<userinput>tar xJf /usr/src/linux-source-&kernelversion;.tar.xz</userinput> and change to the directory <filename>linux-source-&kernelversion;</filename> that will have been created. -- 2.1.4
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