No video after boot

[Paul M. Foster]

Folks:

This is a shot in the dark, but I'll try it.

I have a new ASUS Prime H570M-Plus/CSM motherboard (LGA1200 socket) with
an Intel i3 10100 CPU (10th gen, with UHD630 graphics) in it. I have a
DVD drive in it and a 500GB SSD. I've used a live CD/DVD in this machine
to install Debian 11 to the SSD. It boots, and does a couple of lines of
the usual boot chatter (ramfs and such), and then the video simply stops
(no signal). I've tried two monitors, various cables. The install went
without a hitch, so I know that at least the installer runs without
difficulty, no video glitches.

I know that as Debian starts up, it adjusts the video several times on
my main desktop as it boots. This is about the point where the new
system simply stops outputting video. I'm afraid that there's an issue
here where the kernel version (5.10.xx) is too far back to handle the
way the i3 handles video mode changes, or something like that.

Does anyone have a clue about this?

Paul

[keithrb...@gmail.com]

Good morning

Have you tried booting recovery mode?

If you think the problem is kernel, 5.14 is available in backports.





--
All the best

Keith Bainbridge

keithrb...@gmail.com

[Paul M. Foster]

Recovery mode generates slightly more jabber on screen, but then does
the exact same thing-- video signal disappears.

There's a *more* advanced kernel in backports? I thought backports was
for old stuff. And I've never used it, not sure how to do it. The other
problem here is that, if I could actually boot, I could update the
kernel. But without being able to boot the drive, I can't quite imagine
how I'd update the kernel.

Paul

[Felix Miata]

Paul M. Foster composed on 2021-11-11 16:25 (UTC-0500):

> Does anyone have a clue about this?

Something to try: remove xserver-xorg-video-intel. If you find *.conf in
/etc/X11/xorg.conf.d/ containing 'Driver "Intel"', remove/rename the file.

Also, show us Xorg.0.log from before and after the try (use pastebinit to upload,
then provide URL here). It should be in /var/log/, but may be in ~/.local/share/xorg/.

For troubleshooting purposes only, you may need to try nomodeset on the Grub linu
line.
<https://en.opensuse.org/SDB:Nomodeset:_Work_Around_Graphic_Upgrade_&_Installation_Obstacles>

10th Gen IGPs shouldn't need backports, but I could be wrong, and they might.
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.

Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata

[Keith Bainbridge]

On 12/11/21 08:58, Paul M. Foster wrote:
>
> There's a *more* advanced kernel in backports? I thought backports was
> for old stuff. And I've never used it, not sure how to do it. The other
> problem here is that, if I could actually boot, I could update the
> kernel. But without being able to boot the drive, I can't quite imagine
> how I'd update the kernel.
>
> Paul

Paul

Briefly, backports is a method of bringing newer stuff into stable, for
people who really, really need newer. They are handled by a team who try
to ensure that stuff in testing is working well enough that the rest of
us should be able to use it with fewer problems than simply running
testing.

I thought you were getting a terminal? You said that you have another
PC. So

Find a tutorial on adding backports to your sources.list, then how to
use backports. I have an alias that installs backports:

sudo apt-get -y install --install-recommends -t bullseye-backports
package

The tutorial should explain how to add a line to your sources.list,
# apt update,
apt search linux-image

check for signed images (linux-image-5.14.0-0.bpo.2-amd64/now
5.14.9-2~bpo11+1 amd64 [installed,local] Linux 5.14 for 64-bit PCs
(signed)

# apt-get -y install --install-recommends -t bullseye-backports
(maybe???) linux-image-5.14.0-0.bpo.2-amd64 from my list of available
images

[Paul M. Foster]

Your suggestion was spot on. I plugged the new drive into my main
machine, booted it, then configured /etc/apt/sources.list to accept
backports. Updated. Installed the 5.14 kernel. Made sure it would boot
from my main machine after that. Then took it out and plugged it into
the new machine. Video works now. So it *was* a problem with the 5.10
kernel and the onboard graphics from the i3 chip.

Thanks,

Paul

[Felix Miata]

Paul M. Foster composed on 2021-11-11 20:40 (UTC-0500):

>>>> with an Intel i3 10100 CPU…

> So it *was* a problem with the 5.10
> kernel and the onboard graphics from the i3 chip.

Pretty disappointing that a CPU introduced ~15 months[1] prior to the distro's
release isn't supported out of the box. That doesn't sound right. :(

[1]
<https://www.intel.com/content/www/us/en/products/sku/199283/intel-core-i310100-processor-6m-cache-up-to-4-30-ghz/specifications.html>