[Ubuntu 20.04] System will auto resume when attached monitor to thunderbolt port during suspend.

Asked by Miguel Imperial on 2020-09-10

Description:
When system is under suspend, the system will auto resume when a Thunderbolt Monitor is attached to the system.
Would like to confirm if this is normal behavior in Linux?

Procedure:
1. Suspend the system.
2. Attach a Thunderbolt Monitor.

Expected Behavior:
System will not auto resume.

Actual Behavior:
System auto resumes.

System Information:
Kernel Version: 5.4.0-47-generic

Machines used:
ThinkPad P1 Gen 3
ThinkPad X1 Extreme Gen 3

Additional Information:
1. Does not happen when using HDMI Port.

Question information

Language:
English Edit question
Status:
Expired
For:
Ubuntu Edit question
Assignee:
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Last query:
2020-09-10
Last reply:
2020-09-25

Is there a setting in BIOS to wake up the system when Thunderbolt is used at all?

Launchpad Janitor (janitor) said : #2

This question was expired because it remained in the 'Needs information' state without activity for the last 15 days.