Also affects my Acer Aspire TravelMate Spin B118 on Ubuntu 22.04. The
i2c-i801 workaround from comment 14 above
(https://bugs.launchpad.net/ubuntu/+source/linux-
hwe-5.11/+bug/1931001/comments/14) works nicely.
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Upgraded to kernel 5.16 today no more irq noise. Thank you!
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https://bugs.launchpad.net/bugs/1931001
Title:
Soft lockup due to interrupt storm from smbus
Status
** Summary changed:
- kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s!
+ Soft lockup due to interrupt storm from smbus
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** Changed in: linux
Status: Incomplete => Fix Released
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https://bugs.launchpad.net/bugs/1931001
Title:
kernel: watchdog: BUG: soft lockup - CPU#3 stuck
This bug is believed to be fixed in kernel v5.16 by the following 2
commits:
commit 03a976c9afb5e3c4f8260c6c08a27d723b279c92
Author: Jarkko Nikula
Date: Wed Nov 17 11:45:09 2021 +0200
i2c: i801: Fix interrupt storm from SMB_ALERT signal
commit 9b5bf5878138293fb5b14a48a7a17b6ede6bea25
Believed to be fixed in the kernel by two commits.
See: https://bugzilla.kernel.org/show_bug.cgi?id=177311#c65
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Title:
** Tags added: patch
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https://bugs.launchpad.net/bugs/1931001
Title:
kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s!
Status in Linux:
Incomplete
The proposed patch from bugzilla.kernel.org
** Patch added: "i2c-i801-disable-alert-v2.diff"
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.11/+bug/1931001/+attachment/5542409/+files/i2c-i801-disable-alert-v2.diff
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** Changed in: linux-hwe-5.13 (Ubuntu)
Status: New => Confirmed
** Changed in: linux (Ubuntu)
Status: New => Confirmed
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: linux (Ubuntu)
Status: Incomplete => New
** Changed in: linux (Ubuntu)
I cannot take any logs with apport-collect, because the boot is to slow too
finish when this happens.
So please change the status to Confirmed.
** Also affects: linux-hwe-5.13 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu)
Importance: Undecided
Launchpad has imported 65 comments from the remote bug at
https://bugzilla.kernel.org/show_bug.cgi?id=177311.
If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
My Lenovo Ideapad Duet 3i with Ubuntu 22.04 (Kernel 5.13) is also
affected (Current workaround disable_features=0x10).
** Bug watch added: Linux Kernel Bug Tracker #177311
https://bugzilla.kernel.org/show_bug.cgi?id=177311
** Also affects: linux via
New best workaround, instead of blacklisting i2c-i801 keep it but
disable interrupts and use polling instead.
Step 1 Temporary and to be able to boot for step 2).
a. To able to boot enter the grub menu (press ESC once during boot)
b. select the (Ubuntu)Linux entry you want to boot and press "e"
I started kernel bisecting in an attempt to find the commit that causes this
issue.
Painfull process.
I found another workaround (not a solution) on stackoverflow (which has
been deleted from stackoverflow by now). The workaround was to disable
virtualization in the BIOS: Intel VTX -> disabled ,
Launchpad has imported 1 comments from the remote bug at
https://bugzilla.redhat.com/show_bug.cgi?id=2009977.
If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
I also tied blacklisting only "i801_smbus" but that gave the same issue.
Only blacklisting "i2c_i801" is currently the best workaround.
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** Bug watch added: Red Hat Bugzilla #2009977
https://bugzilla.redhat.com/show_bug.cgi?id=2009977
** Also affects: fedora via
https://bugzilla.redhat.com/show_bug.cgi?id=2009977
Importance: Unknown
Status: Unknown
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Possible work around (not a fix), blacklist module i2c_i801. It works
for me ...
Since I noticed a high amount of CPU time spent in interrupt handling I looked
at /proc/interrupts (right after the slow boot and slow login):
$ cat /proc/interrupts
CPU0 CPU1
0:
Also tried kernel parameter watchdog_thresh=20, same problem
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https://bugs.launchpad.net/bugs/1931001
Title:
kernel: watchdog: BUG: soft lockup - CPU#3 stuck for
Since I was not to use "Also affects distribution/package" functionality, I add
the following links of very simular bugreports in distro's other than Ubuntu:
* https://bugs.archlinux.org/task/71575
* https://bugs.archlinux.org/task/70236
* https://bbs.archlinux.org/viewtopic.php?id=264127
*
Same same, after upgrade from 5.8 to 5.11.
Soft lockups during boot, long boot time, and after that a very slow machine.
My machine is also Intel Celeron based, like the previous reports.
After login into the desktop environment, the "atop" program shows that almost
all cpu time is spent in irq,
I also have this problem. After the automatic update from kernel 5.8 to 5.11
this error occurs.
The error only occurs during a cold boot. When rebooting the system, this error
does not occur.
Here an interesting thread about this problem:
** Package changed: linux (Ubuntu) => linux-hwe-5.11 (Ubuntu)
** Changed in: linux-hwe-5.11 (Ubuntu)
Status: Incomplete => Confirmed
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This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1931001
and then change the status of the bug to 'Confirmed'.
If, due to the
Hello Cascardo.
Here you will find dmesg.tgz with:
dmesg/dmesg-2021-05-07-08-22.txt
dmesg/dmesg-normal.txt
dmesg/dmesg-unresponsive.txt
dmesg/dmesg-2021-05-20.txt
dmesg-normal.txt is a full dmesg when the computer works fine.
dmesg-unresponsive.txt is a full dmesg in which the computer boots
Hi, vcarceler.
Can you give complete dmesg from when this happens?
Thanks for you report.
Cascardo.
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Title:
kernel: watchdog:
** Package changed: ubuntu => linux (Ubuntu)
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Title:
kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s!
Status in linux
You have been subscribed to a public bug:
Ubuntu 20.04 LTS and Ubuntu 21.04 occasionally boots with very bad
performance and very unresponsive to user input on Lenovo laptop Lenovo
300e 2nd Gen 81M9 (LENOVO_MT_81M9_BU_idea_FM_300e 2nd G).
When this happens you can read this kind of messages on
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