This is a laptop, and yes, disable SMP is a known work-around. I didn't
check if it's related to AC/battery. Upstream for intel-microcode
package is https://github.com/intel/Intel-Linux-Processor-Microcode-
Data-Files, and this has been reported as https://github.com/intel
/Intel-Linux-Processor-Mi
PS: The Linux command line parameter `dis_ucode_ldr` can be used to
disable applying microcode updates [1].
[1]: https://lkml.org/lkml/2020/6/11/651
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https://bugs.launchpad.net/bugs/18627
Trying to find out, if bug #1883065 [1] is a duplicate of this one.
Is this a laptop? If yes, does having the power cable plugged in make a
difference?
Starting with `maxcpus=1` and then trying to bring more CPUs online, on
the Dell Precision 3540 with dedicated AMD graphics card, it always
hangs
Unfortunately, with some more tries, this still happens on kernels of
all series.
** Changed in: hwe-next
Status: Fix Released => Confirmed
** Changed in: oem-priority
Status: Fix Released => Confirmed
** Changed in: intel-microcode (Ubuntu)
Status: Fix Released => Confirmed
Verified with 3.20200609.0ubuntu0.18.04.1 by the way.
** Changed in: intel-microcode (Ubuntu)
Status: Triaged => Fix Released
** Changed in: oem-priority
Status: Confirmed => Fix Released
** Changed in: hwe-next
Status: New => Fix Released
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Yes, this is fixed by 20200609 release:
microcode: microcode updated early to revision 0xd6, date = 2020-04-23
microcode: sig=0x806ec, pf=0x80, revision=0xd6
microcode: Microcode Update Driver: v2.2.
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Hi You-Sheng Yang, are you still seeing this issue after the release of
the 20200609 microcode update? Particularly after a warm reboot?
Bug 1883002 looks to be the same processor id and reports similar
instability with the 20200609 microcode, particularly after a warm
reboot.
Thanks.
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Updated 3.20191115.1ubuntu0.19.10.4, 3.20191115.1ubuntu4 after bug
1862938.
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Title:
Hard lockups using microcode releases 20191115 on Intel Whisk
And bug 1856143, bug 1853369.
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Title:
Hard lockups using microcode releases 20191115 on Intel Whiskey Lake
To manage notifications about this bu
** Changed in: intel-microcode (Ubuntu)
Importance: Undecided => Critical
** Changed in: intel-microcode (Ubuntu)
Status: New => Triaged
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** Also affects: oem-priority
Importance: Undecided
Status: New
** Changed in: oem-priority
Status: New => Confirmed
** Changed in: oem-priority
Importance: Undecided => Critical
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Another possible duplicate in bug 1858810.
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Title:
Hard lockups using microcode releases 20191115 on Intel Whiskey Lake
To manage notifications
Rebuild packages for F/E/B/X in PPA
https://launchpad.net/~vicamo/+archive/ubuntu/ppa-1862751, verified
local built binaries of all series. Need review & landing.
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Commit that imports intel microcode 20191115 release:
https://git.launchpad.net/ubuntu/+source/intel-microcode/commit/?h=applied/ubuntu/focal&id=430f0c0621df9884e4917710c2af20032d42f8f3
and the binary used in this platform:
https://git.launchpad.net/ubuntu/+source/intel-microcode/tree/intel-ucode/
Previous reboot hang issue for some Skylake: bug 1854764. Trying to
reach @sbeattie.
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Title:
Hard lockups using microcode releases 20191115 on In
Commit that imports intel microcode 20191115 release:
https://git.launchpad.net/ubuntu/+source/intel-microcode/commit/?h=applied/ubuntu/focal&id=430f0c0621df9884e4917710c2af20032d42f8f3
and the binary used in this platform:
https://git.launchpad.net/ubuntu/+source/intel-microcode/tree/intel-ucode/
PPA that reverts `intel-ucode/06-8e-0c`:
https://launchpad.net/~vicamo/+archive/ubuntu/ppa-1862751
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Title:
Hard lockups using microcode releases
Filed upstream bug as https://github.com/intel/Intel-Linux-Processor-
Microcode-Data-Files/issues/24
microcode: sig=0x806ec, pf=0x80, revision=0xc6 # good
microcode: sig=0x806ec, pf=0x80, revision=0xca # hang
** Tags added: oem-priority originate-from-1855642 somerville
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