LINUX

Upgrade kernel in Ubuntu

Today I need to upgrade my Ubuntu box from kernel 2.6 to 3.13, here are my few notes: 1. Check the current kernel root@xxx:~# uname -r 2.6.32-042stab108.5 2. Update your box root@xxx:~# apt-get update 3. Search for the kernel image Shell root@xxx:~# apt-cache search linux-image alsa-base – ALSA driver configuration files linux-image-3.13.0-24-generic – Linux kernel […]

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Fix GPG error NO_PUBKEY when apt-get update your Ubuntu

Some of you might encounter the following error when $apt-get update your Ubuntu system, like mine: Fetched 24.0 MB in 9s (2542 kB/s) Reading package lists… Done W: GPG error: <a href=”http://archive.canonical.com/” target=”_blank”>http://archive.canonical.com</a> trusty Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 NO_PUBKEY 3B4FE6ACC0B21F32 W: GPG error:

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