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2 Posts

04-15-2020

Serbia

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  • Posts: 2
  • Registered: ‎04-15-2020
  • Location: Serbia
  • Views: 30
  • Message 1 of 2

Bug with BIOS update from N23UJ18W to N23UJ23W x1 Carbon

2020-04-15, 12:46 PM

After updating from N23UJ18W to N23UJ23W I was unable to boot system as I get error: thermal_zone2: critical temperature reached 45c

 

Kernel: 5.5.15-200.fc31.x86_64

 

I have noticed that something is wrong with thermal zones config:

 

cat /sys/class/thermal/thermal_zone2/type

B0D4

cat /sys/class/thermal/thermal_zone2/trip_point_0_temp

45000

cat /sys/class/thermal/thermal_zone2/trip_point_0_type

critical

 

This is totally wrong, as 45 C should not be critical temp for shutdown.

 

In order to boot I need to wait for machine to cooldown in order to get success boot after that I am amble to use system normally and without shutdown. If I suspend it sleep, it will fail with same error. This was a sign that there is some error with BIOS update and acpi.

 

I have downgraded to older version of BIOS N23UJ18W and fix the issue.

Same command outputs after downgrade:

 

cat /sys/class/thermal/thermal_zone2/type

SEN1

cat /sys/class/thermal/thermal_zone2/temp

30000

cat /sys/class/thermal/thermal_zone2/trip_point_0_temp

103000

 

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16 Posts

05-07-2020

United States of America

35 Signins

135 Page Views

  • Posts: 16
  • Registered: ‎05-07-2020
  • Location: United States of America
  • Views: 135
  • Message 2 of 2

Bug with BIOS update from N23UJ18W to N23UJ23W x1 Carbon

2020-05-07, 1:05 AM
Check the release page: https://support.lenovo.com/us/en/downloads/ds502281 There are two methods to update Bios. bootable cd package and cabinet file. Which did you tried? Maybe you could try the other package.
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