Ethernet[10ec:8136] doesn't work after S3 with kernel 4.15.0.43.64
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
OEM Priority Project |
Fix Released
|
High
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
AceLan Kao | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
Cosmic |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[Impact]
The Ethernet works after S3 with kernel 4.15.0-33.36, and fails with kernel 4.15.0.43.64.
There is no interrupt while plug/unplug Ethernet cable after S3, so it looks like a regression after 4.15.0-33.36.
[Fix]
Check changelog and found there are 2 commits introduced from 4.15.0-35.38 might be suspicious
* r8169 no internet after suspending (LP: #1779817)
- r8169: don't use MSI-X on RTL8168g
- r8169: don't use MSI-X on RTL8106e
And check the upstream log and found the 2 MSI-X commits had been all reverted, since below commit claims it fixes the MSI-X interrupt issue which is already in Bionic kernel.
083874549fdf PCI: Reprogram bridge prefetch registers on resume
So, I reverted the 2 MSI-X commits and found the Ethernet works again after S3.
[Regression Potential]
Low, the 2 disable MSI-X commits are workarounds, and now we have proper way to fix the issue, so it should be fine to revert them.
CVE References
description: | updated |
Changed in oem-priority: | |
status: | New → Confirmed |
importance: | Undecided → High |
Changed in linux (Ubuntu Bionic): | |
status: | New → In Progress |
Changed in linux (Ubuntu Cosmic): | |
status: | New → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Cosmic): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-bionic verification-done-cosmic removed: verification-needed-bionic verification-needed-cosmic |
Changed in hwe-next: | |
status: | New → Fix Released |
tags: | added: cscc |
Changed in linux (Ubuntu): | |
status: | Fix Committed → Fix Released |
Changed in oem-priority: | |
status: | Confirmed → Fix Released |
https:/ /lists. ubuntu. com/archives/ kernel- team/2018- December/ 097407. html