** Description changed: [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 + * 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 + 083874549fdf PCI: Reprogram bridge prefetch registers on resume So, I reverted the 2 MSI-X commits and found the Ethernet works again after S3. - - The upstream commits to revert the 2 MSI-X can't be clean cherry picked, so I revert the commits directly in Bionic kernel. - 9675931e6b65 r8169: re-enable MSI-X on RTL8168g - d49c88d7677b r8169: Enable MSI-X on RTL8106e [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.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1809847 Title: Ethernet[10ec:8136] doesn't work after S3 with kernel 4.15.0.43.64 Status in linux package in Ubuntu: In Progress 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1809847/+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
