The failing stack already has a patch:
https://bugzilla.kernel.org/show_bug.cgi?id=216266
** Bug watch added: Linux Kernel Bug Tracker #216266
https://bugzilla.kernel.org/show_bug.cgi?id=216266
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I tried mainline kernels in Ubuntu 22.10:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.0.3/ - resume now
works, but both resume and suspend are really slow (20+ seconds)
https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.1-rc1/ - works as
well, without the long delay
Probably something was
It seems that some logs are written on resume before the freeze:
/var/log/kern.log
Oct 23 20:42:29 aziber kernel: [ 1478.088305] Filesystems sync: 0.010 seconds
Oct 24 11:55:24 aziber kernel: [ 1478.355281] Freezing user space processes ...
(elapsed 0.002 seconds) done.
Oct 24 11:55:24 aziber
Public bug reported:
Some time after updating to Ubuntu 22.04 and Kernel 5.15, Intel Tiger
Lake laptop started getting black screen and EXT4-fs errors 10-20
seconds after resume from sleep. This is reproducible approximately
every other time, i.e. sometimes the resume works normally.
Usually,
The workaround is to unload the thermal kernel module that overreacts to
short-lived temperature changes due to CPU load while charging.
sudo rmmod int3403_thermal
On Wed, Dec 2, 2020, 01:21 Magdalena S <1873...@bugs.launchpad.net>
wrote:
> I also have the same issue with the Lenovo Yoga C940
Yes, digital mic and speakers now work using the new SOF subsystem in
the kernel.
But the overheating shutdown is still there unless you do rmmod
int3403_thermal
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Srinivas, can you please elaborate which relationship file you are
referring to?
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https://bugs.launchpad.net/bugs/1873083
Title:
Lenovo Yoga C940 frequently does
Wilson, does it happen when charging or the laptop is in the sun?
It seems to me this is a battery temperature sensor and it is only mildly
affected by the CPU temperature.
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Anyway, I have checked that Windows keeps the temperature under control
on the same machine, by throttling CPU.
Shouldn't thermald also do it out of the box, not requiring hand-written config
files?
Or maybe something is missing in my thermal_zone3, like there are no links to
related cooling
I have now run it, but it didn't output anything about SEN4
** Attachment added: "thermal-conf.xml.auto"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873083/+attachment/5355890/+files/thermal-conf.xml.auto
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No, normally it's below 60C.
I can get it to 80C (and shutdown) when the AC is plugged in and
charging the battery and I load my CPU a lot at the same time.
Usually it means a video conference with several people and charging at
the same time. A little bit of sun also helps.
So I guess the
I have traced it to int3403_thermal module.
If I do rmmod int3403_thermal - the thermal_zone3 goes away an no thermal
shutdown is happening.
I can use it as a workaround - but is it dangerous for the HW?
By the way, these are the types I get:
/sys/class/thermal/thermal_zone0/type:acpitz
/sys/class/thermal/thermal_zone1/type:SEN2
/sys/class/thermal/thermal_zone2/type:SEN3
/sys/class/thermal/thermal_zone3/type:SEN4
/sys/class/thermal/thermal_zone4/type:B0D4
By the way, I have only one thermal_zone with mode file in it -
thermal_zone0 (other don't have mode)
If I do:
sudo echo "disabled" > /sys/class/thermal/thermal_zone0/mode
I get: Permission denied
The thermal zones that usually cause the shutdown is thermal_zone3 and
thermal_zone4 (rarely)
--
If I start thermald service, I still can reproduce thermal shutdown
relatively easily.
What is cryptic is that while I monitor the sensors, CPU core temps are
around 85deg, but when shutdown happens it says that critical value was
80C.
Where does this difference come from? Laptop runs above 80C
20.04 includes thermald 1.9.1, but it is not running by default.
$ systemctl status thermald
● thermald.service - Thermal Daemon Service
Loaded: loaded (/lib/systemd/system/thermald.service; disabled; vendor
preset: enabled)
Active: inactive (dead)
What should a user like me do to
Public bug reported:
On a bit higher load and especially if Laptop is charging, very often
Kernel does an emergency thermal shutdown.
thermal thermal_zone3: critical temperature reached (80 C), shutting
down
It says 80 C, but sensors command shows that temperatures hovering close
to 100C before
Attaching [Hardware Error] lines from kern.log
** Attachment added: "hwerror_kern.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1871843/+attachment/5350281/+files/hwerror_kern.log
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Public bug reported:
Lenovo Yoga C940, running Ubuntu 20.04 beta
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-21-generic 5.4.0-21.25
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu24
OK, 5.3.0-43 in proposed works ok again. But there's a broken kernel in
the wild now (42)
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https://bugs.launchpad.net/bugs/1867055
Title:
Regression: Lenovo Yoga C940
No this kernel has been released to updates and my laptop doesn't
suspend nor shutdown properly anymore :-(
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https://bugs.launchpad.net/bugs/1867055
Title:
Regression:
Btw suspend works with latest mainline kernel 5.6.0-rc6
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https://bugs.launchpad.net/bugs/1867055
Title:
Regression: Lenovo Yoga C940 hangs while going to sleep
Status in
I have disabled proposed updates, completely uninstalled kernel 5.3.0-42 and
installed yours again.
I was able to boot this time, but the problem is still there - suspend hangs.
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This reverted kernel doesn't even boot for me...
The screen remains blank with cursor blinking after splash screen
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https://bugs.launchpad.net/bugs/1867055
Title:
Public bug reported:
With new linux-image-5.3.0-42-generic Lenovo Yoga C940 stopped going to sleep.
Whn going to sleep the on/off LED keeps on (instead of blinking) and the laptop
is unresponsive. Needs a 4 second power button shutdown. The problem is
reproducible every time.
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