** 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
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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https://bugs.launchpad.net/bugs/1931001
Title:
** Tags added: patch
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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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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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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
22 matches
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