This bug is awaiting verification that the 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-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verification-needed-xenial' to 'verification-failed-
xenial'.

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: verification-needed-xenial

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https://bugs.launchpad.net/bugs/1836152

Title:
  Intel ethernet I219 has slow RX speed

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Fix Committed
Status in linux-oem package in Ubuntu:
  New
Status in linux-oem-osp1 package in Ubuntu:
  New
Status in linux source package in Bionic:
  Fix Committed
Status in linux-oem source package in Bionic:
  New
Status in linux-oem-osp1 source package in Bionic:
  Fix Released
Status in linux source package in Disco:
  Fix Committed
Status in linux-oem source package in Disco:
  Invalid
Status in linux-oem-osp1 source package in Disco:
  Fix Released

Bug description:
  [Impact]
  RX speed on Intel ethernet I219 v6 is extremely slow due to multiple RX
  CRC errors.

  [Fix]
  Disable e1000e K1 feature to make I219 and PCH operate at higher speed
  to avoid the issue.
   
  [Test]
  Before applying the patch, the RX is slower than 150Kbps. After applying
  the fix the RX speed can achive gigabits.

  [Regression Potential]
  Low. This only applies to recent I219 generations.
  I've also test several other systems with e1000e and I don't see any
  regression.

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