I'm having trouble booting into Debian 13. Whenever I try, I get stuck in a loop of black screens with no access to TTY. This is a fresh install, and I've previously run other distributions like Mint and Ubuntu without any major issues. Here's what happens: I select Debian from the GRUB menu, the screen goes dark, and my monitor eventually stops seeing any video input and wants to sleep. I've tried switching to HDMI from both the motherboard and the GPU, but no luck. At one point, the GPU gives me a solid green screen instead of black. I can't access TTY with Ctrl + Alt + F(1-6), and I've ensured that secure boot is disabled. I'm currently using the 'nomodeset' boot parameter as a workaround. I have an AMD 6650XT GPU, and I've tried checking some BIOS settings, but nothing has helped so far.
3 Answers
Are you booting in legacy or UEFI mode? It might affect how the system interacts with the GPU upon boot.
It could be related to a BIOS setting for your primary graphics device. Check your BIOS for settings like 'Above 4G Decoding', 'Re-Size BAR Support', or 'CSM'. Sometimes toggling these can help, but it sounds like you've already tried those without success.
I checked my options, and I have those settings, but changing them didn’t seem to affect anything. The default for CS is disabled.
This sounds like it might be a kernel bug with Debian. Make sure your system is fully updated and then consider reporting the bug. You can find the reporting template on their website, and be sure to collect any errors by enabling SSH in the meantime. That way, if the system boots but the display fails, you can check the logs remotely for any `amdgpu` errors.
I'm booting in UEFI.