https://bugzilla.kernel.org/show_bug.cgi?id=209417

Bug ID: 209417 Summary: kernel-5.8*, amdgpu - Blank screen shortly after boot, "fixed" with suspend and wake up Product: Drivers Version: 2.5 Kernel Version: >=5.8 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: juantxorena@gmail.com Regression: No

Created attachment 292699 --> https://bugzilla.kernel.org/attachment.cgi?id=292699&action=edit boot log 5.8.11 fedora

When using a 5.8.* kernel, the following happens:

- During boot, some initial messages appear, then the screen flickers a couple of times and it goes blank

- I blind-enter the LUKS password, and it appears to work because

- pressing the sleep key of the keyboard (laptop) works and the laptop suspends

- after waking it up, it works normally

This happens with the normal boot options and without options "rhgb" and "quiet". The problem goes away when using the "nomodeset" option in the kernel.

Hardware: Dell Precision 7530 laptop, Radeon Pro WX 4150 and integrated GPU Intel UHD Graphics 630.

I have tried this with fedora kernels (the distro I use), and also with an OpenSUSE live USB with a kernel 5.8.10. The problem persists, and the "fix" is the same.

I attach the kernel log of a boot with the 5.8.11 kernel.

Extra information: I have had some problems with suspend, after suspending the screen is blank and I have to close the lid and open again. This happens since various kernels ago, but I never reported because it wasn't serious and I use hibernate anyway. It may be related, since it works after suspend-wake up.