Arch Linux

Varsima

Member

Registered: 2024-12-14

Posts: 6

Dell Latitude 7480 screen freezes and caps lock key light flickers

I have recently installed Arch Linux on my Dell Latitude 7480 and I came across this issue, whenever I boot up after some time screen freezes, caps lock light flickers and it becomes unresponsive and I have to force shut down. I think this is some kind of kernel panic but not exactly sure how to solve it. I tried updating BIOS, system, drivers but I still am facing this issue. one more this, in the bootloader screen when I edit it and type "nomodeset" it seems to work but with graphical issues (not recognizing the screen, I am not able to change refresh rate and more.) have you ever had this problem? what can I try to fix it? (this is not only Arch's problem, I face this issue with all the distros I tried, Ubuntu, Mint, Fedora, Manjaro) I 've never had this issue on Windows.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,324

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

It is indeed a kernel panic.  Start here: https://wiki.archlinux.org/title/Kernel#Kernel_panics

What is your GPU?
Does this happen if you only boot to a console?

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Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
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Varsima

Member

Registered: 2024-12-14

Posts: 6

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

It is indeed a kernel panic.  Start here: https://wiki.archlinux.org/title/Kernel#Kernel_panics

What is your GPU?
Does this happen if you only boot to a console?

My GPU is: Intel-Integrated HD Graphics 620

How can I only boot to a console?

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,324

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

What desktop environment do you use?  Are you using a display manager like gdm or sddm?  You can disable the  display manager.
The other way is to set your default systemd target: https://wiki.archlinux.org/title/Systemd#Targets

Edit:  The good news is the Intel GPU is well supported by the Kernel with a lower chance of being root cause of problem.

Last edited by ewaller (2024-12-14 19:36:35)

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

Varsima

Member

Registered: 2024-12-14

Posts: 6

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

I am using KDE Plasma. I checked journal -xe logs and there is this error: ACPI support missing from driver? intel-lpss INT3446:00: probe with driver intel-lpss. could this issue cause kernel panic?

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,324

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

Probably not.   After a panic, reboot and look through the journal using journalctl -b -1 which shows what happened during from the previous boot to the current boot.  If anything is logged, it will be at the end.  Look for words like panic and traceback.

Or, use

journalctl -b -1 | curl -F 'file=@-' 0x0.st

To push your journal to a pastebin and share the link with us so we can see the journal output

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

Varsima

Member

Registered: 2024-12-14

Posts: 6

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

This is my logs: https://0x0.st/XF9J.txt

there is only one line with panic: Dec 14 23:50:48 archlinux kernel: simple-framebuffer simple-framebuffer.0: [drm] Registered 1 planes with drm panic

nothing found with traceback

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,324

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

I don't see an actual panic in that output.  Did the most recent boot prior to this one panic?
The time stamps appear to be about 10 minutes old (what time is it where you are)

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

Varsima

Member

Registered: 2024-12-14

Posts: 6

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

currently it's 12:06 AM here. I edited bootloader and added 'nomodeset' to boot up and capture that journalctl log, I just don't have enough time to do it while booting up normally, it becomes unresponsive so quicly

Varsima

Member

Registered: 2024-12-14

Posts: 6

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

I came across this post: https://forums.opensuse.org/t/issue-wit … 5/164462/6

it seems to work great for now

Last edited by Varsima (2024-12-14 20:23:38)

seth

Member

Registered: 2012-09-03

Posts: 60,807

Re: Dell Latitude 7480 screen freezes and caps lock key light flickers

https://0x0.st/XF9J.txt stops w/ the initramfs hand-over, no actual session is logged.

I am using KDE Plasma.

On X11 or wayland? Does it matter?
Please post your Xorg log, https://wiki.archlinux.org/title/Xorg#General and in doubt

pacman -Qs xf86-video

remove xf86-video-intel

Edit: cross-post, first  check whether disabling i915.dc helps - notably if you're not running on xf86-video-intel itfp.

Last edited by seth (2024-12-14 20:29:26)

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