No video output with Kernel 5.15.0-53-lowlatency

[Oliver]

Since kernel update to 5.15.0-53-lowlatency, I get no output at all anymore on the monitor. The monitor says 'No Signal'. Also when trying to change to a console with CTRL-ALT-F1 no output.

When booting to the still installed previous version 5.15.0-52-lowlatency, all works as expected, and equally so when booting to a self compiled kernel 5.15.73-rt52.

System is Xubuntu 22.04 LTS.

The debug output is from booting with kernel -52.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[gdp77 (gdp77)]

It has been already reported here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1996740

[omvsj (omvsj)]

I tested all generic kernels available on Linux Mint 21.
Processor: AMD Ryzen 3 3200G with Radeon Vega Graphics × 4
Video card: Advanced Micro Devices, Inc. [AMD/ATI] Picasso/Raven 2 [Radeon Vega Series / Radeon Vega Mobile Series]

Kernel 5.15.0-53: black screen and no terminal.
Kernels from 5.15.0-25 to 5.15.0-52 all work as expected.

So... this bug also affect generic kernels.

[Tomek Paruszewski (tomek-paruszewski)]

Kernel 5.15.0-53: black screen and no terminal after boot

AMD Ryzen 5 2400G with Radeon Vega Graphics × 4

[Oliver (grimmoliver)]

Issue solved here with 5.15.0-56-lowlatency.