I'm trying to setup as touchscreen for a raspberry pi.
My screen only displayed a white screen when kernel started. So I wondered how boot messages are displayed on my screen during startup. Bios, Bootloader, kernel are able to show some things on the screen. How is it possible?
Let's come back to my white touchscreen. The screen is not a "standard" one because it is connected over a given SPI, not over HDMI, DVI. From logs I can see frame buffer is ready 8s after kernel startup :
[ 8.026032] graphics fb1: flexfb frame buffer, 480x320, 300 KiB video memory, 4 KiB buffer memory, fps=20, spi0.0 at 16 MHz
So, if screen was correctly configured,
- Would logs from kernel startup be displayed on screen?
- OR Would I get kernel log displayed on screen after some seconds (time to load screen driver)?
- OR I won't get any kernel logs. But would I get something displayed on X startup?