This bug was fixed in the package linux - 4.15.0-115.116
---
linux (4.15.0-115.116) bionic; urgency=medium
* bionic/linux: 4.15.0-115.116 -proposed tracker (LP: #1893055)
* [Potential Regression] dscr_inherit_exec_test from powerpc in
ubuntu_kernel_selftests failed on B/E/F
Thanks for your great work. I have just verified that the kernel works
as it should.
I don't know if I am supposed to add a tag as well or how to do it.
Again, thanks.
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I have tested the proposed kernel as requested and updated tag to
verification-done-bionic. System booted as expected. Thank you for
fixing this.
** Tags added: verification-done-bionic
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This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag
This bug was fixed in the package linux-oem - 4.15.0-1093.103
---
linux-oem (4.15.0-1093.103) bionic; urgency=medium
* bionic/linux-oem: 4.15.0-1093.103 -proposed tracker (LP: #1887026)
* [SRU] plug headset won't proper reconfig ouput to it on machine with default
output
** Changed in: linux-oem (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1856387
Title:
Freezing on boot since kernel
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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Title:
Freezing on boot since kernel
** Description changed:
+ [SRU Justification]
+
+ [Impact]
+ In bug 1840239, HPET is disabled on some systems for they caused TSC
+ being marked unstable while it is not. This caused an regression as bug
+ 1851216 that some systems may then hang at early, so a fix cherry picked
+ back from
Thanks You-Sheng, I'll set aside some time shortly to upgrade.
Regards.
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Title:
Freezing on boot since kernel 4.15.0-72-generic
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => High
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Title:
Freezing on boot since kernel 4.15.0-72-generic
** Changed in: linux-oem (Ubuntu Bionic)
Assignee: (unassigned) => You-Sheng Yang (vicamo)
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
** Changed in: linux-oem (Ubuntu)
Status: New => Invalid
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SRU: https://lists.ubuntu.com/archives/kernel-team/2020-June/111019.html
B/OEM-B
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Title:
Freezing on boot since kernel
** Changed in: linux-oem (Ubuntu Bionic)
Status: New => In Progress
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Title:
Freezing on boot since kernel
@Anthony, thank you. As commented in #23, it should be safe to upgrade
you system to Eoan/Focal and on if you feel like. I'll still do the
follow-ups and send the fix to Bionic then.
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Well done You-Sheng!
Tried both packages and they worked fine. Don't worry about the delay, I have
more than enough to keep me occupied at the moment.
Thanks much for your efforts here. What happens next, just wait for 20.04.1 to
release? Do I need to clean anything up or can I just leave as is
Sorry for the late reply. I'm not going to let you compile kernel, as
least for now. I promise.
So it's pretty simple here. After you ran following two commands:
$ sudo add-apt-repository ppa:vicamo/ppa-1856387
$ sudo apt-get update
apt has rebuilt its available packages database for
Hello yet again You-Sheng,
OK, I'm missing something here unfortunately. I've dome the first clone:-
git clone -b bug-1856387/fix-PIT-skip/bionic
https://git.launchpad.net/~vicamo/+git/ubuntu-kernel
but obviously the second will be a problem trying to clone into 'ubuntu-kernel'.
What is:-
git
Hello again You-Sheng,
I think I get something. I think I understand what you mean by it would take
several hours to publish built binaries. You want me to follow those links on
the ppa page and do those git clones?
I'm doing that anyway just see what happens.
Regards.
Tony
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Hello You-Sheng,
(hope you are well by the way)
I've applied your ppa as described
sudo add-apt-repository ppa:vicamo/ppa-1856387
sudo apt-get update
However I'm not sure what to do next. I assume it installed some packages, but
how do I test. I tried a reboot, but I couldn't see how it would
OK. I must confess I'm a bit vague on ppa's. Does it clone the kernel
source and then I do a build and test?
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Title:
Freezing
Please do try my ppa so that we can verify if it actually works and
solve this problem for other Bionic users as well. Thank you.
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Hello You-Sheng,
I've only just noticed this. Thanks for responding. I've been a bit busy
lately, but I'll either try one of the bionic 5.3 kernels or try your ppa test
hopefully soon.
Thanks. Regards.
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Disco and OEM-OSP1-B have been fixed as well.
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Title:
Freezing on boot since kernel 4.15.0-72-generic release
Status in linux
PPA for testing
https://launchpad.net/~vicamo/+archive/ubuntu/ppa-1856387 . It would
take several hours to publish built binaries.
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** Also affects: linux-oem (Ubuntu)
Importance: Undecided
Status: New
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Title:
Freezing on boot since kernel
@Anthony, you can try focal kernel directly on your Bionic installation
first.
$ printf "deb http://archive.ubuntu.com/ubuntu/ focal main restricted
universe multiverse\ndeb http://archive.ubuntu.com/ubuntu/ focal-updates main
restricted universe multiverse\n" >
Bug 1851216 backports commit c8c4076723da ("x86/timer: Skip PIT
initialization on modern chipsets") to Bionic and Disco, which then has
a follow-up commit 979923871f69 ("x86/timer: Don't skip PIT setup when
APIC is disabled or in legacy mode") landed in Eoan and Focal and on,
leaving Bionic the
Hello all,
Does anyone know if this bug will cause a problem upgrading to Ubuntu 20.04
LTS? I assume it will as we're stuck using an older kernel and 20.04 is based
on kernel 5.4. Or, will it simply upgrade and keep us on the older kernel?
Regards.
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Hi, for those who still suffers from this issue, it was a regression
issue caused by commit f723dd269d07 "x86/timer: Skip PIT initialization
on modern chipsets"), which was backported to 4.15.0-71 in bug 1851216
as a fix for some other platforms. So, please try latest mainline
kernel[1] as
It seems that I have the same issue with my HP ZBook that Ubuntu doesn't
boot since kernel 4.15.0-72-generic release.
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Title:
I can confirm that I have applied the same patch to
4.15.0-76.86-generic. Without the patch my system failed as described
above. With the patch it seems to work.
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I have tested a proposed patch by Thomas Gleixner (t...@linutronix.de) at
both the identified commit and also at the latest version and in both cases my
computer booted successfully.
Comment also posted in bugzilla.
https://bugzilla.kernel.org/show_bug.cgi?id=206125
Regards
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Thanks for your feedback, You-Sheng. I've added a comment to that effect now.
Regards.
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Title:
Freezing on boot since kernel
Anthony, you should stat this is still reproducible with v5.5-rc5, not
Ubuntu 4.15.0-72-generic.
Include bugzilla url for further reference:
https://bugzilla.kernel.org/show_bug.cgi?id=206125 .
** Bug watch added: Linux Kernel Bug Tracker #206125
I have filed a bug in bugzilla. Hopefully it's been done OK as I've not
done this before.
It is as follows:-
Bug 206125 - Freezing on boot since kernel 4.15.0-72-generic release
Regards.
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Hi,
I seem to have the same problem. I have no experience with linux kernels or bug
reports, but I am a computer engineer so with guidance I will be able to
contribute to debugging.
I am running "Ubuntu 4.15.0-46.49-generic 4.15.18" on an HP zbook the
lspci output is attached.
Both 4.15.0-72
Hi You-Sheng,
Thanks for responding. Sadly, the problem is not fixed in v5.5-rc5 mainline
kernel.
I'll look at lodging a bug in bugzilla.
Also I'll try putting some debug code around in that commit to see if I can
identify anything.
Regards.
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Hi Anthony,
As you may have found, this commit was landed in bug 1851216 for a
possible system hang due to bug 1840239, and since it is a solution
backported from v5.3-rc1, and you also stated this can be reproduced in
v5.5-rc1, then you may probably want to either 1) try a slightly newer
Hello again, sorry I meant to add the git bisect log (FYI). See below:-
# bad: [48d6312566e04b7a713cc7c15ae7dcd37efcfa95] UBUNTU: Ubuntu-4.15.0-72.81
# good: [ad85666cf30fb921558424a18cabbf396361a90c] UBUNTU: Ubuntu-4.15.0-70.79
git bisect start 'Ubuntu-4.15.0-72.81' 'Ubuntu-4.15.0-70.79'
# good:
Hello,
I have completed the bisect as requested and identified the problem commit. The
bisect message is as follows:-
git bisect good
f723dd269d0740e09af47bb5590ffc4f61766153 is the first bad commit
commit f723dd269d0740e09af47bb5590ffc4f61766153
Author: Thomas Gleixner
Date: Thu Nov 7
Hello You-Sheng,
Thanks for responding again.
Yes, I was just looking at doing a bisect. I've done it before for another
problem. I just have to familiarise myself again with the procedures for it.
Will attend to it soon.
Regards
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Is it possible for you to perform kernel bisecting between -70 and -72?
*
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic/tag/?h=Ubuntu-4.15.0-70.79
*
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic/tag/?h=Ubuntu-4.15.0-72.81
See
Hello,
Just updating to say that I tried the upstream kernel below but the problem is
still present.
Upstream kernel:
5.5.0-050500rc1-generic
Regards.
Tony
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Hello You-Sheng,
Thanks for responding.
I tried "hpet=disable" on a boot for both -70 and -72. No change. Kernel -72
still just stops, but -70 boots OK. As for the dmesg, I don't seem to be able
to get any logging / messaging for -72. The only reference I can find for it is
in the dpkg log
For 2), I mean booting -70 with "hpet=disable".
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Title:
Freezing on boot since kernel 4.15.0-72-generic release
Status in linux
Hi, two questions.
1. do you have dmesg booting with a -72 kernel? The one attached is -70.
2. Could you try booting with an extra kernel parameter "hpet=disable"?
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