So far, what I got from investigation is: After setting vc4-fkms-v3d, the fb driver's sequence is bootloader -> simplefb -> drm_vc4 fb
Without vc4-fkms-v3d, the sequence is bootloader -> simplefb -> bcm2708_fb (the screen will flicker when bcm2708_fb takeover the display) I will continue looking at the bcm2708_fb. And for 3A+ booting issue, after adding vc4-fkms-v3d, the system need much memory, but 3A+ only have 512M physical memory, looks like the 512M is not enough for drm_vc4, so the kernel crash with "out of memory errors". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1848247 Title: 3A+ boot failure on Eoan To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware-raspi2/+bug/1848247/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
