I tried cold booting this computer from a parted magic image I have on a
usb stick. This also resulted in no network. I then shut it down and
cold booted into windows, also no network, so it appears to be happening
regardless of the OS.
On 9/23/22 12:04, T Zack Crawford via PLUG-discuss wrote:
I am very interested in the answer because my desktop does the same thing if I
tell it to hibernate, boot into my windows dual boot, and reboot back into
linux. I can regain network access again by hibernating again and booting back
into linux directly (no windows). Pretty annoying because it takes a solid 2-5
minutes to shut down when hibernating. At least it still does the job, just
with delay.
This only happens if I try hibernating and then boot into windows (not full
shutdown, not hibernate and boot directly to linux). It has always happened
since I enabled hibernation (arch wiki instructions). Having Systemd restart
NetworkManager does nothing. Setting up a new network configuration with
networkmanager does not solve it. This is with my motherboard ethernet and my
wireless USB adapter. I spent some good energy trying to figure it out, but
never did.
Did you update kernels today? What if you downgrade?
Put the solution as a boot script. Or at least bash profile instead of run
commands (otherwise it will run every time you spawn a terminal shell)
Sep 23, 2022 11:14:35 Jim via PLUG-discuss <plug-discuss@lists.phxlinux.org>:
A few months ago my Dell Optiplex 7010 running Ubuntu 20.04 started booting up
without the network. I'd reboot the machine and the network was there. If I
shut down the machine and turned it on again, no network. I thought something
was wrong with the built in ethernet adapter, so I bought a usb adapter,
disabled the built in one and the problem went away until today. Now it's
happening with the usb ethernet adapter. Rebooting the machine fixes the
problem gets the network up and running. If I start with a cold boot and
reboot at the grub screen, I get the network. I have 3 SSDs and 2 HDDs. I
have the same video card that I had before this problem first showed itself.
It's a GeForce GT 710.
I looked online and found something telling of other people who have had this
problem. They disconnected video cards and went back to the built in video
(display port), and removed hard drives that had been added later and this
fixed the problem. The ultimate solution was to replace the power supply. I
disconnected one SSD and the 2 HDDs. I don't have anything that can use a
display port, so I left the video card in place. All I had connected were 2
SSDs. One it boots from and my home directory is on the other. The problem
still showed itself when I booted the machine, so I shut down and plugged in
everything again. This thing has a 240 watt power supply. Do power supplies
go band in such a way they don't produce the amount of power they used to?
Any ideas what it might be? Is there a command that would tell the system to
set up the network again? If there is, I could put it in the .bashrc until I
get this fixed.
Thanks
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