Public bug reported:

[Impact]
On Dell XPS 13 with Dell TB16 docking station, sometimes the devices on docking 
station do not show up or takes couple minutes to be recognized.

[Fix]
This issue doesn't exist in 4.16 vanilla kernel, and after bisected the kernel 
and found below commit fixes this issue.
   cc5db3150e87 net: qcom/emac: Use proper free methods during TX
Applied this commit on top of Bionic 4.15 kernel and confirmed it works.

[Regression Potential]
Low, this commit is more like a patch fixes a bug which has been introduced 
since the driver was created. It aligns the dma_map and dma_unmap methods which 
might cause issue in some cases.

** Affects: hwe-next
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: AceLan Kao (acelankao)
         Status: In Progress


** Tags: originate-from-1786753 somerville

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1788567

Title:
  System takes long time to read device via Thunderbolt 3 port

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1788567/+subscriptions

-- 
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to