[Bug 2161093] Re: Black screen after boot with kernel 7.0.0-28-generic on AMD Radeon RX 580

I would like to add some background information that may or may not be related to this issue. Since my very first Linux installation (about six months ago), I have always needed to boot with the kernel parameter: amdgpu.dc=0 Even before installing Linux, the installer would only start in Safe Graphics mode. Without amdgpu.dc=0, I can see the KDE neon splash screen during boot. Immediately after the splash screen disappears, the screen turns completely black, and the graphical desktop never appears. Because of this, I have been using the amdgpu.dc=0 kernel parameter ever since I started using Linux. I don't know whether this is related to the current kernel issue, but I thought this background information might be useful. -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161093 Title: Black screen after boot with kernel 7.0.0-28-generic on AMD Radeon RX 580 Status in linux package in Ubuntu: New Bug description: After installing the latest system updates on KDE neon, my system no longer boots into the graphical desktop when using kernel 7.0.0-28-generic. Hardware: - CPU: AMD Ryzen 5 1600 - GPU: AMD Radeon RX 580 8 GB (Polaris) Symptoms: - GRUB loads normally. - The boot logo is displayed. - After that the screen becomes completely black. - Ctrl+Alt+F1...F6 do not switch to a TTY. - Ctrl+Alt+Del reboots the computer. Booting the previous kernel (6.17.0-40-generic) on the same installation works normally. The issue started immediately after installing system updates. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161093/+subscriptions