Created attachment 861206 [details]
Video of boot process

Dear team,

first time for me reporting a bug here. I'm running openSUSE for years without
serious problems on this system:

Operating System: openSUSE Leap 15.3
KDE Plasma Version: 5.18.6
KDE Frameworks Version: 5.76.0
Qt Version: 5.12.7
Kernel Version: 5.3.18-150300.59.90-default
OS Type: 64-bit
Processors: 6 ��� AMD Phenom(tm) II X6 1075T Processor
Memory: 7,8 GiB
Graphic card: Radeon 6450
Mainboard: ASUS M5A88-V EVO

Installed openSUSE Leap 15.3. is working fine.

Now downloaded openSUSE Leap 15.4 Build 243.2 and trying to start offline
upgrade from DVD or USB. Base system starts. Drivers are being installed (green
process bar on the bottom of the display). Display switches to console mode.
Different steps performed successful. Until removing repos. Last output
"removed '/etc/zypp/repos.d/repo-sle-update.repo'". Then the display turns
black, going to sleep mode, DVD drive continues to work a few seconds more and
stops. See attached video for details. Only reboot possible.

As mentioned I tried to use DVD or USB, I downloaded image twice. I changed
display settings at boot menu. I changed graphic card to mainboard internal. No
change, display is going to sleep at the same stage of boot process.

Any idea? Thanks.