[SRU] Revert 'e1000e: add handshake with the Intel CSME to support S0ix'
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
OEM Priority Project |
New
|
Critical
|
Unassigned | ||
linux (Ubuntu) |
Incomplete
|
Undecided
|
Unassigned |
Bug Description
[SRU Justification]
https:/
From the 5.13.0-1012-oem kernel we found NO Ethernet connecting after resume from suspend, on 5.13.0-1010-oem we don't met this issue, so this is a regression on I219 in lots of platforms.
And this blocked our OEM projects, could we revert the patches in short term? When the firmware or the related patches are ready, we merge it again.
Oct 25 22:45:44 p15s-ThinkPad-
[Impact]
These doesn't improve power consumption on some e1000e platforms.
[Fix]
I tried to revert these 3 patches on 5.13.0-1019.23, it works fine.
commit f65d71bdcb52e8d
Author: Sasha Neftin <email address hidden>
Date: Wed Aug 18 15:10:49 2021 +0800
e1000e: Additional PHY power saving in S0ix
BugLink: https:/
After transferring the MAC-PHY interface to the SMBus set the PHY
to S0ix low power idle mode
commit c97933898708a37
Author: Sasha Neftin <email address hidden>
Date: Wed Aug 18 15:10:48 2021 +0800
e1000e: Add polling mechanism to indicate CSME DPG exit
BugLink: https:/
Per guidance from the CSME architecture team, it may take
up to 1 second for unconfiguring dynamic power gating mode.
Practically it can take more time. Wait up to 2.5 seconds to indicate
dynamic power gating exit from the S0ix configuration. Detect
scenarios that take more than 1 second but less than 2.5 seconds
will emit warning message.
commit 66069cb4ebaf0ec
Author: Sasha Neftin <email address hidden>
Date: Wed Aug 18 15:10:47 2021 +0800
e1000e: Add handshake with the CSME to support S0ix
BugLink: https:/
On the corporate system, the driver will ask from the CSME
(manageability engine) to perform device settings are required
to allow S0ix residency.
This patch provides initial support.
[Test Case]
Do suspend and resume 10 times, it works fine.
for i in {1..10}; do
echo $i
rtcwake -m no -s 20 && echo mem > /sys/power/state
if dmesg | grep -q "Detected Hardware Unit Hang"; then
fi
sleep 15
done
[Where problems could occur]
00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (13) I219-LM [8086:15fb] (rev 20)
CPU: 11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz
tags: | added: oem-priority originate-from-1948738 sutton |
Changed in oem-priority: | |
importance: | Undecided → Critical |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1949353
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.