@Shengyao Xue, 1.) Intel suspected that this Lenovo issue might be related to this issue: https://bugs.launchpad.net/somerville/+bug/1933807 on Intel vPro system. Lenovo did mention that vPro systems have the same issue.
2.) Intel SW debug engineer is adding some debug prints to the I219 runtime power managements callbacks to see if they are getting called, even though they shouldn’t. I will share patches once it is available. 3.) Can you please try below and see whether you can reproduce the issue? Please also pay attention if the system cannot enter Suspend to Idle after applying this. echo on > /sys/bus/pci/devices/0000\:00\:16.0/power/control Explanation, taken from https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-devices-power: What: /sys/devices/.../power/control Date: January 2009 Contact: Rafael J. Wysocki [email protected] Description: The /sys/devices/.../power/control attribute allows the user space to control the run-time power management of the device. All devices have one of the following two values for the power/control file: + "auto\n" to allow the device to be power managed at run time; + "on\n" to prevent the device from being power managed; The default for all devices is "auto", which means that they may be subject to automatic power management, depending on their drivers. Changing this attribute to "on" prevents the driver from power managing the device at run time. Doing that while the device is suspended causes it to be woken up. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1927925 Title: Massive network problems with I219-V on Thinkpad T14 Gen2 (e1000e) To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1927925/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
