FS#47758 - intel-ucode missing certain Intel CPUs
Attached to Project:
Arch Linux
Opened by Alexander Pavel (SuperIce97) - Thursday, 14 January 2016, 22:53 GMT
Last edited by Doug Newgard (Scimmia) - Friday, 15 January 2016, 05:57 GMT
Opened by Alexander Pavel (SuperIce97) - Thursday, 14 January 2016, 22:53 GMT
Last edited by Doug Newgard (Scimmia) - Friday, 15 January 2016, 05:57 GMT
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Details
Description: Due to the way Intel distributes their
microcode packages, not all CPU microcodes are included in
the newest packages from Intel. This has led to the
intel-ucode package in Arch Linux to be delayed and remain
on the Jan 2015 version, even though a new package was
released by Intel on Nov. 2015 that provides some important
fixes for newer Broadwell CPUs (such as the 3205u, which is
in a Chromebook I installed Arch on). My guess as to why the
Arch package has not been updated is has to do with the
missing CPUs in the new Intel package. For instance, the
i7-2630QM which is on a gaming notebook I use is supported
by Intel's Jan. 2015 microcode, but not the Nov. 2015 one.
My suggestion is to include all the intel microcode marked
by Intel as "(latest)" in the repository package. There are
currently 5 packages supplied by Intel marked as "(latest)".
I'm not sure what to do from here, but there should be a way
to load these 3 microcodes in order from oldest to newest
that would allow the latest microcode for that specific CPU
to be loaded. I believe it is very important to include
these newer microcodes at least, because without it there
various random errors on certain Intel chips.
Additional info: Latest version in Arch repository: 20150121 Latest versions on Intel's site: 20140122, 20140913, 20150107, 20150121, 20151106 Steps to reproduce: Try compiling a full Linux kernel in Arch Linux using an Intel Celeron-3205u. Compilation will fail due to an internal compiler error or a segfault at random points. The Nov. 2015 microcode fixes this. See task 46562 for more info. |
This task depends upon
Closed by Doug Newgard (Scimmia)
Friday, 15 January 2016, 05:57 GMT
Reason for closing: Not a bug
Additional comments about closing: Out of date packages are not bugs. It's already flagged.
Friday, 15 January 2016, 05:57 GMT
Reason for closing: Not a bug
Additional comments about closing: Out of date packages are not bugs. It's already flagged.