Thanks for your reply raph! Yes I tried pressing F1 repeatedly after pressing the power button. I also tried using an external USB keyboard. Also tried F12 for boot menu. But the error seems to block startup before it checks if F1/F12 are pressed. As described earlier, the first two/three times or so the error appeared it was actually possible to enter bios setup with F1. Sadly I didn't find the cause of the error soon enough. So now the NVRAM seems to be so full, it can't even enter BIOS or listen to keys pressed :(
I brought my laptop to a local repair store. They couldn't fix it themselves but will send it to a store in berlin specialized on motherboard repairs an firmware flashing. If I understood correctly, clearing NVRAM completely could also make the laptop unbootable. I hope they can somehow clear and reinstall the original firmware image using a special hardware interface. I will report any progress. If you have any other ideas, I can do tests with the other broken laptop of my brother. Thanks a lot for your interest! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953261 Title: kernel >= 5.13 BUG: kernel NULL pointer dereference To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acpi-call/+bug/1953261/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
