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Gloom_Scythe
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PostPosted: Thu Jan 09, 2020 4:57 am    Post subject: EFI Install and AMDGPU question. Reply with quote

I am installing Gentoo on one SSD. Gentoo will be the only OS. I used gparted to create partitions using an older systemrescue dvd. Is the small 3mb partition necessary for a UEFI install? I would like to use grub2. If the small 3mb bios/boot partition is not needed does /boot need to be fat32. The guide is confusing. Does gentoo need to be booted from efi media? Some forum posts I have read state that it is necessary to boot from an efi livedvd...

Another side question. I have an AMD fury. I was reading the AMDGPU wiki and do I need to use an initramfs if I add the firmware files directly in the kernel under the loadable firmware option? I am currently on the phone so no way I can get screenshots at the moment :/

Thanks for the help
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charles17
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PostPosted: Thu Jan 09, 2020 8:53 am    Post subject: Re: EFI Install and AMDGPU question. Reply with quote

Gloom_Scythe wrote:
... Is the small 3mb partition necessary for a UEFI install? ...

No.
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halcon
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PostPosted: Thu Jan 09, 2020 11:18 pm    Post subject: Re: EFI Install and AMDGPU question. Reply with quote

Gloom_Scythe wrote:
Does gentoo need to be booted from efi media? Some forum posts I have read state that it is necessary to boot from an efi livedvd...

The newest versions of Gentoo-minimal are efi-capable.

But, if your machine's BIOS does not have the "Legacy" option, then an usual CD or USB stick with just copied Gentoo-minimal on it - won't boot.

When I was installing Gentoo on a laptop without Legacy BIOS, I managed to make a bootable USB stick (with Gentoo-minimal) according to https://wiki.gentoo.org/wiki/LiveUSB/Guide, the chapter "Linux, manual installation".

About livedvd I can't say nothing, I didn't use it for years.
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Gloom_Scythe
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PostPosted: Fri Jan 10, 2020 12:43 pm    Post subject: Reply with quote

I would prefer to use the minimal livecd but I have a flakey WiFi card and it will not work with the minimal livecd nor the newer livedvd with Gentoo. The new livedvd from Gentoo recognizes the card but it will not connect to an ssid. I have to use the rescuecd from 2016.... Strangely it works on an older kernel version. I have a shoddy Asus pce-n10. Uses the rtl8192 driver :/
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nvaert1986
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PostPosted: Thu Jan 16, 2020 2:12 pm    Post subject: Reply with quote

Is the small 3mb partition necessary for a UEFI install?
- That's not required with a native UEFI installation. Just create 1 FAT32 partition of at least 128MB and mark it as boot / esp partition using parted

Does gentoo need to be booted from efi media?
- If you wish to install Gentoo in UEFI mode, then the answer is yes

Another side question. I have an AMD fury. I was reading the AMDGPU wiki and do I need to use an initramfs if I add the firmware files directly in the kernel under the loadable firmware option?
- An initramfs is not needed in your case. This is usually only required with extremely exotic boot partitions and boot options.
- If you wish to compile the amdgpu driver in-kernel, you need to add the firmware in the kernel too
- If you wish to compile the amdgpu driver as a module, then you only need to emerge linux-firmware and make sure /lib/firmware is accessible at boot (which it is by default, if you don't place it on a separate partition

I've got quite a few different machines and actually never use an initramfs (aside for the intel-ucode.img; Intel CPU microcode updates, which is done completely automatic for you if you set the correct USE flags and have /boot mounted).
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Gloom_Scythe
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PostPosted: Sat Jan 18, 2020 4:11 pm    Post subject: Reply with quote

Thank you nvaert1986. Your advice worked great. Install worked. I have a live system up and running. Now the fun on getting my WiFi card to work. (Good ol rtl8192cs...... Ugh) After reviewing my kernel and dmesg logs, it looks like andgpu loaded without issues. I have not taken the time to get a full working install since 2012. I am happy Gentoo has official guides for gnome without systemd.
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nvaert1986
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PostPosted: Mon Jan 20, 2020 11:15 am    Post subject: Reply with quote

Gloom_Scythe wrote:
Thank you nvaert1986. Your advice worked great. Install worked. I have a live system up and running. Now the fun on getting my WiFi card to work. (Good ol rtl8192cs...... Ugh) After reviewing my kernel and dmesg logs, it looks like andgpu loaded without issues. I have not taken the time to get a full working install since 2012. I am happy Gentoo has official guides for gnome without systemd.


Try the rtl8xxxu driver in the more recent kernels. This driver should do the trick for you. It might be in staging though, not too sure about that.
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