Bug 495222

Summary:	black screen after boot, after last kernel upgrade
Product:	[KDE Neon] neon	Reporter:	Duns <web>
Component:	general	Assignee:	Neon Bugs <neon-bugs-null>
Status:	RESOLVED FIXED
Severity:	critical	CC:	carlosd.kde, jr, neon-bugs-null, web
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Duns 2024-10-23 07:27:51 UTC

SUMMARY

After the upgrade to last kernel (6.8.0-47 generic) after the boot, and instead of login screen, you get a black screen

STEPS TO REPRODUCE
1. Boot from the last kernel (6.8.0-47 generic)
2. You get nothing but a black screen

OBSERVED RESULT

No login screen, but a black one

EXPECTED RESULT

A login screen, and the possibility to login

SOFTWARE/OS VERSIONS

Operating System: KDE neon 6.2
KDE Plasma Version: 6.2.1
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2
Kernel Version: 6.8.0-47-generic (64-bit)
Graphics Platform: X11
Processors: 4 × AMD Ryzen 3 3200G with Radeon Vega Graphics
Memory: 5,2 GiB of RAM
Graphics Processor: AMD Radeon Vega 8 Graphics

ADDITIONAL INFORMATION

If I boot in recovery mode (with the same kernel) I can login and, after, all seems ok

Comment 1 Duns 2024-10-23 09:08:59 UTC

even with the last (1 hour ago) updates still black screen, unless i go to the recovery mode...

Comment 2 Duns 2024-10-23 09:09:32 UTC

and also in another device, with KDE Neon and that kernel...

Comment 3 Duns 2024-10-24 13:47:24 UTC

In this other device the black screen bug is really severe:

Operating System: KDE neon 6.2
KDE Plasma Version: 6.2.2
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2
Kernel Version: 6.8.0-45-generic (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 5700G with Radeon Graphics
Memory: 13.5 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: A520M K V2
System Version: -CF

I don't know if it is relevant, but this other device has an hdmi monitor.

Comment 4 Duns 2024-10-24 14:01:33 UTC

In this last device I solved (workaround) modifying the grub file in /etc/default. in this way:

#GRUB_CMDLINE_LINUX_DEFAULT="quiet splash consoleblank=240"
GRUB_CMDLINE_LINUX_DEFAULT="quiet"

Comment 5 Carlos De Maine 2025-02-03 22:00:59 UTC

closing as fixed as reported