[SOLVED] can't boot gentoo

[smartding]

It's not my first time installing gentoo, but this time I just can't get past the grub message "Loading Linux 5.14.13-gentoo ...", nothing after this message, just a black screen.

I guess there's something wrong with my kernel config, would someone please take a look?

Here's the output from "lspci -k": https://pastebin.com/raw/VczuzzuX

And here's my kernel config: https://pastebin.com/raw/Q74V7VPN

[NeddySeagoon]

smartding,

Looki at your kernel we see.

[smartding]

@NeddySeagoon

Thank you for your reply.

It turned out I just need to enable EFI framebuffer. Although I'm using grub to load kernel, simple frame buffer doesn't seem necessary.

Two more questions regarding your answer:

1. What's pinctrl and gpio for? I googled it, seems to have something to do with embedded systems?

2. Do I need the USB2 and USB1 drivers if I attach an old USB 2 stick into a USB 3 port?

[NeddySeagoon]

smartding,

Your system can switch bits of itself not being used into low power modes.
With some Intel Systems on a Chip (SoC), some parts don't even power up without the matching pinctrl and gpio drivers.
Those things are the kernel drivers to do that power management.

If your system works without those options they are not strictly required but if you operate from a battery, it helps battery life.

USB development, from the very early days was a mess.
For USB1, there were two competing implementaions of the standard. UHCI (Intel and VIA) and OHCI, the rest of the world.
When USB2 come out, there was only one standard, EHCI but some vendors added USB1 support to their host chupsets via Transaction Translators.
This was a mess too. It meant that the USB2 bus ran at USB1 speeds whenever a USB1 device was active.
That could take a lot of time, running at 12MHz instead of 400MHz, that was not available to USB2 devices.
e.g. your USB1 keyboard, Webcam, whatever, would slow down your USB2 memory stick.

USB3 did it right. Support for USB1 and USB2 is required. There is only one standard, xHCI. Lets ignore USB-C just now.
USB3 connectors have 9 pins, not 4, so the USB1/2 wiring is on the original four pins. The other 5 pins carry the USB3 signals.

The xHCI driver takes care of the entire xHCI interface, USB1, USB2 and USB3, so UHCI, OHCI and EHCI are only required if you have real matching USB1 or USB2 chipsets. You don't.

USB-C is a different USB connector that can do other things too. If your system has a USB-C port, you should enable support in your kernel.
I didn't check your kernel.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[pietinger]

[NeddySeagoon]

pietinger,

Thank you for that link.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[pietinger]