** Changed in: linux-oem-5.13 (Ubuntu Focal)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1937252
Title:
e1000e: add handshake with the Intel CSME to support S0ix
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-5.13 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Won't Fix
Status in linux-oem-5.13 source package in Focal:
Fix Committed
Status in linux source package in Impish:
In Progress
Status in linux-oem-5.13 source package in Impish:
Invalid
Bug description:
[SRU Justification]
[Impact]
These improves power consumption on some e1000e platforms.
[Fix]
3 fixes in thread https://www.spinics.net/lists/netdev/msg755279.html
(now in netdev/net-next.git).
[Test Case]
These fixes solves two issues that the first one is the power
consumption would be lower to 1.651W from 2.032W when device enters
sleep state. The second is I219 may now enter ultra lower power mode
after resumed from s2idle.
[Where problems could occur]
While these fixes are still not in mainline but net-next, expecting some
more stability fix when necessary.
========== original bug description ==========
Intel is doing some improvement for the Corp ME + S0ix support.
Currently, this patch series have been landed in nextdev, net-next
tree.
e1000e: Additional PHY power saving in S0ix
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=3ad3e28cb203309fb29022dea41cd65df0583632
e1000e: Add polling mechanism to indicate CSME DPG exit
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=ef407b86d3cc7ab7ad37658c1c7a094cb8f3b6b4
e1000e: Add handshake with the CSME to support S0ix
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=3e55d231716ea361b1520b801c6778c4c48de102
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