[Bug 103351] Machine check exception on Broadwell quad-core with SpeedStep enabled

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=103351

--- Comment #27 from kernel@benjam.info <kernel@benjam.info> ---
(In reply to matthew.dewitt from comment #26)
> Created attachment 189091 [details]
> attachment-9832-0.html
> 
> Can someone post a link to clear instructions on the microcode update with
> 5700HQ, so folks who haven't done this before can get it resolved? Thanks!

1. Check what microcode version you have by running `grep microcode
/proc/cpuinfo`
2. Extract the tarfile.
3. Install iucode-tool.
4. For each .bin file that was in the tarfile, run iucode-tool over it. For
example, `sudo iucode-tool 2494656.bin`. You can pass multiple files at once to
iucode-tool, so you could alternatively just run something like `sudo
iucode-tool *.bin`
5. Check if your version of the microcode has changed with `grep microcode
/proc/cpuinfo`
6. If your version of the microcode changed, then hopefully your issue is
fixed. Make sure to re-run step 4 every time after you reboot, until your
distribution's intel-microcode package is updated, or until you get a UEFI
update.

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