Bug 507211

Summary:	No video output on TTY sessions
Product:	[KDE Neon] neon	Reporter:	mashkal2000 <mashkal2000>
Component:	Packages User Edition	Assignee:	Neon Bugs <neon-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	carlosd.kde, jr, kdedev, neon-bugs-null
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description mashkal2000@gmail.com 2025-07-18 21:13:20 UTC

SUMMARY
when switching to another session with Ctrl+Alt+F1 (same thing with F3, haven't tried any others), I get a blank screen. Both of my monitors say there is no input video signal and they go into sleep mode. I can't seem to type any commands, but I'm not sure. Maybe the session is just not logged in or something. At least, neither blindly typing `shutdown -r now` nor the password for the only account on my machine, nor the username + password seemed to do anything. `who` on the main session doesn't show any sessions other than tty2.

Switching back to the main session (F2) works fine, but kwin shows a message saying that desktop effects were restarted due to a graphics reset.

This is a minor issue, but caused a problem for me when the screen locker showed a message saying something like "the screen locker crashed. You cannot log in to this session. Switch to another session and restart from there". I had to hard-shutdown my PC to get access to it again.

STEPS TO REPRODUCE
1.  Ctrl+Alt+F1

OBSERVED RESULT
no video output

EXPECTED RESULT
terminal

Operating System: KDE neon User Edition
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
Kernel Version: 6.14.0-24-generic (64-bit)
Graphics Platform: X11
Processors: 20 × 13th Gen Intel® Core™ i5-13600K
Memory: 32 GiB of RAM (31.1 GiB usable)
Graphics Processor: NVIDIA GeForce GTX 1060 6GB
Manufacturer: ASRock
Product Name: Z690M-ITX/ax

Comment 1 TraceyC 2025-07-23 01:43:59 UTC

This sounds like an issue with Neon. The TTYs are not controlled by Plasma or KDE software, but by lower level code. Sending to Neon.
FWIW I cannot reproduce this in a Neon User VM or with git-master Plasma built on Solus on another laptop

Are you able to see a terminal login on Ctrl+Alt+F4 or Ctrl+Alt+F5?

Comment 2 Carlos De Maine 2025-08-05 02:25:32 UTC

this sounds like a graphics driver issue interacting with virtual terminals.   which nvidia driver are using??  is it the latest available??

Comment 3 mashkal2000@gmail.com 2025-08-05 06:06:22 UTC

(In reply to Carlos De Maine from comment #2)
> this sounds like a graphics driver issue interacting with virtual terminals.
> which nvidia driver are using??  is it the latest available??

I think I'm using the latest one on KDE Neon. Driver Version: 570.169

Comment 4 mashkal2000@gmail.com 2025-08-05 06:07:19 UTC

(In reply to TraceyC from comment #1)
> This sounds like an issue with Neon. The TTYs are not controlled by Plasma
> or KDE software, but by lower level code. Sending to Neon.
> FWIW I cannot reproduce this in a Neon User VM or with git-master Plasma
> built on Solus on another laptop
> 
> Are you able to see a terminal login on Ctrl+Alt+F4 or Ctrl+Alt+F5?

Sorry, I missed your reply. No, F4 and F5 show nothing just like F1 and F3.

Comment 5 Carlos De Maine 2025-08-15 23:49:20 UTC

issue has something to do with nvida driver, modesetting and framebuffers - all upstream issues so changing this bug report to reflect that this an upstream ubuntu issue
https://bbs.archlinux.org/viewtopic.php?id=299997
https://github.com/NVIDIA/open-gpu-kernel-modules/issues/365

Comment 6 mashkal2000@gmail.com 2025-08-16 07:45:55 UTC

I'm not sure that that's the same issue. My GTX 1060 is a Pascal card, which neither supports the open kernel modules nor should be affected by the issue mentioned in the GH issue since it's not a Turing card. Still, it looks like the issue is upstream either way.

Comment 7 Bug Janitor Service 2025-08-31 03:47:33 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 8 Bug Janitor Service 2025-09-15 03:47:58 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.