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In Ubuntu 18.04 I can no longer return from "suspend" and have a wired Internet connection. This was NOT true in previous versions of Ubuntu and its flavors. In order to reestablish an wired Internet connection I have to now restart the system. This is happening on a desktop system, not a laptop. Unusual, and related to 18.04 changes.

Don43085
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  • What kernel version are you running and have you tried an upstream kernel? Also, what's your ethernet card? It'll be helpful to look to cross-reference your model with kernel changes. Basically, we want to figure out if this is an Ubuntu/DE thing or a kernel thing. – guyfleeman May 22 '18 at 20:07
  • Kernel is 4.15.0-22-generic. Ethernet card is "product RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller. Hope that answers your question. No issues with suspend and resume until I installed 18.04. No system hardware changes were made. – Don43085 May 22 '18 at 23:44
  • Could you try grabbing a mainline kernel from the ppa? you'd need headers all, headers generic, linux image unsigned, and modules. Install with dpkg -i *.deb. Remember if you have any issue, you can use GRUB to go back to your old kernel. If that still doesn't work we can probably rule out a kernel bug and start looking at other things. This is an okay starting point because although it's unlikely, it's easy to test. http://kernel.ubuntu.com/~kernel-ppa/mainline/ – guyfleeman May 23 '18 at 04:31
  • Sorry, that activity is unfamiliar to me. I do know that since 18.04 every version of Ubuntu that I tried, Ubuntu, Ubuntu-MATE, Ubuntu-Budgie, and Xubuntu had the same problem, so it came with this latest version. Sorry I cannot help more. – Don43085 May 23 '18 at 19:30
  • @Don43085, were you able to find a solution to this? – Saca Aug 06 '18 at 03:24

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