[solved]Boot console freezes at fb0: switching to inteldrmfb

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

My output freezes during boot when it reaches
[ 3.136848] fb0: switching to inteldrmfb from simple
I had this problem before but it was an AMD specific problem, this time it is on a Intel machine.

Here is the dmesg
https://pastebin.com/HPh1aVaR
You'll notice other problems in my dmesg, I'll create separate threads for those.

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

How do I go about figuring out the what the problem is?

halcon · l33t Joined: 15 Dec 2019 Posts: 649

Hi minkanjin,

Try to boot with kernel parameter nomodeset?

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

Great! That got me to the terminal, but gdm doesn't start. I'm guessing this is a consequence of nomodeset. What do I do next?

Worth mentioning: my chromebook booted fine with the current kernel before. I also tried to boot an older kernel but it also has the problem. So I'm inclined to think the problem is outside the kernel.

NeddySeagoon · Posted: Sun Sep 27, 2020 12:44 pm Post subject:

minkanjin,

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

Kernel .config:
https://pastebin.com/3CBpSaaK

lspci -nnk:

NeddySeagoon · Posted: Wed Sep 30, 2020 10:57 am Post subject:

minkanjin,

Your kernel looks mostly harmless.

Its clear that you did not run lspic from the kernel that you posted as

x90e · n00b Joined: 30 Sep 2020 Posts: 40

You might also set

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

I've recompiled the kernel and no change.
The lspci is from the same kernel, but with the nomodeset option set.

Interesting thing: ssh used to work, that's how I set nomodeset and how I got dmesg the first time. But now my wifi isn't even connecting, my wifi AP doesn't even detect my laptop. This seems to be the case even with older kernels. But when nomodeset is on, the wifi is fine.

I'm using systemd, so rc_logger won't work for me.

Etal · Veteran Joined: 15 Jul 2005 Posts: 1932

With systemd, you can get logs with "journalctl -b"

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

Here is my journalctl output, it contains one reboot, one boot without nomodeset, and one boot with nomodeset

https://pastebin.com/ugJqVUeD

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

Is there a way that I can check if the boot process continues after the console freezes?

NeddySeagoon · Posted: Tue Oct 06, 2020 4:57 pm Post subject:

minkanjin,

Set up ssh and check that it works.
Boot and attempt to connect via ssh.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

I did. It didn't work. The wifi connection doesn't start up, on my wifi AP I'm not detecting the laptop.

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

You said if ssh doesn't work, that tells us something. What does it tell us if ssh/wifi doesn't work?

halcon · l33t Joined: 15 Dec 2019 Posts: 649

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

Ok it seems that it does start ssh, but the wifi doesn't connect so I can't use ssh. Any idea how to get my wifi working?

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

Why would my wifi stop working when nomodeset is off, but work when nomodeset is on?

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

So I got my hands on a USB ethernet adapter. It has the same problem, when I boot with nomodeset it works fine, when I boot without nomodeset it doesn't work. Why would this be? Why would nomodeset affect my network?
Is there a way that I can run a recording program after the screen freezes? So some sort of systemd boot script that can run things like dmesg and dump the data to the disk, so I can retrieve it when I boot with nomodeset.

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

Ok, I managed to fix my network and ssh is working now. Thanks so much for all the assistance :roll:

.

Here is my lspci -nnk

NeddySeagoon · Posted: Sun Nov 08, 2020 9:04 am Post subject:

minkanjin,

You go back to booting with modeset, so your system tries to use the intelfb for the console.
We know that will fail, which is what we want but the boot should work.

You ssh in so you can read logs.
If wgetpaste is not yet installed, emerge it.

Use wgetpaste to put dmesg onto a pastebin site.
Also put your kernel .config file onto a pastebin.

Post the links here. Neither will fit into a post.

I suspect that your /dev/dri/* is missing but it could be other things too.
Sunrise Point chipsets are picky about kernel options.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

dmesg: https://dpaste.com/B4KDZ6U2H

.config: https://dpaste.com/2G76QHGSG

NeddySeagoon · Posted: Sun Nov 08, 2020 2:43 pm Post subject:

minkanjin,

You need

minkanjin · n00b Joined: 29 Jan 2017 Posts: 42

thanks