After recent updates display and wi-fi is lost

[Tuukka Härkönen]

    On Friday, December 4, 2020, 3:30:53 PM GMT+2, Liam Proven <lproven at gmail.com> wrote:  
 
 On Fri, 4 Dec 2020 at 13:54, Tuukka Härkönen via ubuntu-users
<ubuntu-users at lists.ubuntu.com> wrote:

>
> Thank you Liam

I could not find your reply -- all I saw was (collapsed) quoted text.
Then I looked for your email and saw it was on Yahoo. If you're using
the web interface, yes, it's annoying, but there's no way to properly
bottom-post. I suggest Thunderbird -- it can talk to Yahoo mail and it
makes it work "normally", in a more standards-compliant way.

> it took some time to get back to this. So to answer those questions:
>
> *My GPU is Nvidia K2000m

I googled this. It's a laptop GPU, yes?

Does your machine have 2 GPUs with switching? nVidia Optimus or
something like that?

This is notoriously hard to get working with Linux. One option is to
disable switching in the BIOS. Another, and I don't normally suggest
such a radical move, is that perhaps Pop!_OS might work for you. It is
a remix of Ubuntu from a company that sells dual-GPU laptops and it
has the GPU-switching functionality installed and enabled by default
from initial installation. It's the only distro I have heard of that
has this.

> *Ubuntu Sutdio 20.04
>
> *Dell 23* display, but not sure of the model, it's 9 years old. HDMI-DVI cable.
>
> *Not sure of the display firmware

That's fair. It's rare (and difficult) to check or to update this.
Don't worry about it.

> Here behind these link you'll see the screenshots of Nvidia driver server setting panel before and after the kernel updates:
>
> Link https://postimg.cc/VdWsXGb2
>
> image after update
>
> Link https://postimg.cc/dD8JKHnD
>
> As you can see the selections are narrowed down after the update and the driver version can't be seen.

That is odd.

How are you installing the drivers? From Ubuntu's software settings ,
or from a direct download from nVidia?

The former is usually preferable.

> I also noticed today that Virtual Box where I have Windows 7 installed didn’t book and gave kernel related error when I booted with the latest kernel.

Again -- VBox from Ubuntu's software centre, or by direct download?

In case of difficulties, use the versions from the repos. They have
been tested, should Just Work™ and you will get updates automatically.

> However I was able to make the Dell display come along when I changed the GPU driver to the generic open source one that is listed as option in Ubuntu Studio, but it’s not so good and keeps more noise even with TLP activated. But when changing back to Nvidia the problem came back.
>
>
> I'm thinking of uninstalling the drivers and then updating the kernel and installing them again, but I wonder if doing more thorough reinstallation would help? I mean doing it through the Terminal removing everything Nvidia related. Or I just update to Ubuntu 20.10.

If you installed them from  a direct download, I suggest removing them
from the terminal, rebooting, and installing whatever the Software and
Drivers settings page offers you. If you have a choice there, try the
newest; if it doesn't work well, try the next oldest, and repeat.
--------------------

Update. Not sure if you got this already, but I was able to fix the problem by adding kernel headers that were missing. I came across with that solution when browsing about the Virtual Box issue on Ask Ubuntu. Very weird. I have no clue what the "kernel headers" even are and why they can go missing like that after update.
This one solved it: sudo apt-get install linux-headers-$(uname -r)Everything worked well after that.

Thank you Liam anyway.

-- 
Liam Proven – Profile: https://about.me/liamproven
Email: lproven at cix.co.uk – gMail/gTalk/gHangouts: lproven at gmail.com
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UK: +44 7939-087884 – ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053

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