After updating to kernel 5.15.x (I tried both linux-5.15.0-gentoo and linux-5.15.5-gentoo) from kernel 5.14.8, the console does not continue updating from "Starting vmlinuz-5.15.x-gentoo ... Using load options ''". However, the system does boot and I'm able to ssh in. I'm using nvidia-drivers 495.44. I'm able to roll back to 5.14.8 without issue on those same drivers. Changing VTs does nothing. it just stops updating. After reading some other bug reports, I double checked to make sure CONFIG_DRM_KMS_HELPER was set. I don't see anything about blacklight controls. Reproducible: Always Steps to Reproduce: 1. compile, install and boot 5.15.x Actual Results: it does not do text on my screen Expected Results: i should see text scrolling
Created attachment 757023 [details] emerge info
Created attachment 757024 [details] dmesg from 5.14.8
Created attachment 757025 [details] dmesg from 5.15.5
Created attachment 757026 [details] kernel config from 5.15.5
Created attachment 757027 [details] kernel config from 5.14.8
I think you need to incorporate the nvidia kernel modules into an initramfs in order for the kernel messages to appear at that stage. Are you doing that?
nvidia-drivers don't do anything for console, it doesn't have a framebuffer driver Typically rely on efifb or simplefb, and nvidia-drivers will at most just restore this mode when switching back from Xorg or similar So I don't think this has anything to do with nvidia, unless the display manager also failed to launch (if one is setup), which may have its own errors.
(In reply to Ionen Wolkens from comment #7) > nvidia-drivers don't do anything for console, it doesn't have a framebuffer > driver And nvidia-drm.modeset=1 also can't be used for this, just to clarify. Should avoid having drivers on an initramfs at all, it just complicates updates that must not mismatch with system libraries.
I don't run an initramfs. I don't think I communicated this correctly. it's not that I'm not getting kernel messages, I'm not getting any video output. the framebuffer transition (to the one with the cute penguins on top) never occurs and I'm stuck seeing "Starting vmlinuz-5.15.x-gentoo ... Using load options ''". I use startx to start X11 so I have no idea if that works. but, i can ssh in just fine so I know the system's up. when i revert to 5.14.8 everything still works. as far as i know, the method i use to compile the kernel and deploy it to /boot hasn't changed at all.
(In reply to Ionen Wolkens from comment #7) > nvidia-drivers don't do anything for console, it doesn't have a framebuffer > driver > > Typically rely on efifb or simplefb, and nvidia-drivers will at most just > restore this mode when switching back from Xorg or similar > > So I don't think this has anything to do with nvidia, unless the display > manager also failed to launch (if one is setup), which may have its own > errors. i'll investigate this, maybe one of them got disabled in my configuration. thank you for the hint.
I think I figured it out. thank you for your help. FB_SIMPLE was enabled on both 5.14.8 and 5.15.5 X86_SYSFB was enabled on 5.14.8: "Mark VGA/VBE/EFI FB as generic system framebuffer" it does not exist in 5.15.5. it changed to SYSFB_SIMPLEFB. SYSFB_SIMPLEFB was not enabled in 5.15.5.
