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
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https://bugs.launchpad.net/bugs/1788567
Title:
System takes long time to read device via Thunderbolt 3 port
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Bug description:
[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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1788567/+subscriptions
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