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After upgrading to 15.04, I have one additional driver (it did not appear in 14.10). What is the purpose of this driver and should I enable it?

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The microcode data file for Linux contains the latest microcode definitions for all Intel processors.

Intel releases microcode updates to correct processor behavior as documented in the respective processor specification updates.

While the regular approach to getting this microcode update is via a BIOS upgrade, Intel realizes that this is an administrative hassle.

The Linux Operating System has a mechanism to update the microcode after booting the OS.

In Ubuntu Vivid Vervet 15.04,ubuntu-drivers-common is a framework to detect hardware-dependent components on user's machine.

Source

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    so, no to worry if this driver is not used? – Ljiljan Veselinovic Apr 25 '15 at 8:22
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    Yes, no to worry if this driver is not used. – kyodake Apr 25 '15 at 15:08
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    I will add the the 'Do not use the device' doesn't mean you are not using the device, I think it means you aren't using it with the available proprietary driver. (e.g. my wifi card is set to 'do not use' in additional drivers but is happily using bcma-pci-bridge instead of the proprietary wl) – Wilf Jul 13 '15 at 20:53
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    So this will permanently upgrade the BIOS? – Flimm Dec 13 '15 at 10:17
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    @Flimm No, the update has to be reapplied. If you put "Do not use the device" the microcode will be the BIOS's not your Ubuntu's. – Avamander Feb 19 '16 at 22:22

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