This bug is awaiting verification that the linux-
azure-6.5/6.5.0-1007.7~22.04.1 kernel in -proposed solves the problem.
Please test the kernel and update this bug with the results. If the
problem is solved, change the tag 'verification-needed-jammy-linux-
azure-6.5' to 'verification-done-jammy-linux-azure-6.5'. If the problem
still exists, change the tag 'verification-needed-jammy-linux-azure-6.5'
to 'verification-failed-jammy-linux-azure-6.5'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-jammy-linux-azure-6.5-v2 
verification-needed-jammy-linux-azure-6.5

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.5 in Ubuntu.
https://bugs.launchpad.net/bugs/2034504

Title:
  Enable ASPM for NVMe behind VMD

Status in OEM Priority Project:
  New
Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem-6.1 package in Ubuntu:
  Invalid
Status in linux-oem-6.5 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  New
Status in linux-oem-6.1 source package in Jammy:
  Fix Released
Status in linux-oem-6.5 source package in Jammy:
  Fix Released
Status in linux source package in Lunar:
  Fix Committed
Status in linux-oem-6.1 source package in Lunar:
  Invalid
Status in linux-oem-6.5 source package in Lunar:
  Invalid
Status in linux source package in Mantic:
  Fix Released
Status in linux-oem-6.1 source package in Mantic:
  Invalid
Status in linux-oem-6.5 source package in Mantic:
  Invalid

Bug description:
  [Impact]
  ASPM of NVMe behind VMD is not enabled when BIOS FADT doesn't allow ASPM to 
be modified.
  That causes higher overall power consumption.

  [Fix]
  Allow ASPM to be enabled.
  While at this, remove old cruft that can interfere upstream VMD driver.

  [Test]
  Check the value of `/sys/kernel/debug/pmc_core/slp_s0_residency_usec`. Now 
system can reach deepest power saving state during sleep.

  [Where problems could occur]
  Some NVMe may have I/O issue when ASPM is enabled. But for this scenario the 
issue will also appear when VMD is disabled.

To manage notifications about this bug go to:
https://bugs.launchpad.net/oem-priority/+bug/2034504/+subscriptions


-- 
Mailing list: https://launchpad.net/~kernel-packages
Post to     : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to