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RTL8822BE disappearing after a minute without Genkernel
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pc_user4
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PostPosted: Sat Aug 10, 2024 4:57 am    Post subject: RTL8822BE disappearing after a minute without Genkernel Reply with quote

I have a RTL8822BE WiFi card in a laptop here. It worked well on the install minimal CD, Genkernel of course. It also works when I run Genkernel myself, but I want it to work with gentoo-kernel-bin. In case it is related, this is an older laptop without UEFI, so I am doing a legacy MBR install.

When I boot into Gentoo, it works for a couple minutes but then the device disappears. Then I get the following error in logs:

Code:
Direct firmware load for rtl_bt/rtl8822cu_fw.bin failed with error -2


I can try to load the rtw88 firmware with modprobe, but it doesn't help. I can't get the module reloaded without a reboot.

It is an old laptop with poor thermals and tends to lock up during longer compilations, so I want to use gentoo-kernel-bin. I am hoping to find a solution that allows me to use this WiFi adapter with the pre-compiled kernel. Is this possible at all, or must I use Genkernel/manual kernel?

I found this thread trying to research the problem, but unfortunately it didn't pertain to my current situation in a helpful manner.
https://forums.linuxmint.com/viewtopic.php?t=324341&sid=18e77d2174fde04fa1b3651bd2584dc2&start=20
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iNeedIT
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PostPosted: Sat Aug 10, 2024 9:14 am    Post subject: Re: RTL8822BE disappearing after a minute without Genkernel Reply with quote

You got error with number two:
#define ENOENT 2 /* No such file or directory */

So, kernel can't find 'must have' file. But don't worry, it is easily to fix it.
We need just download linux-firmware.


Binary version of gentoo, can be very problematic with drivers.
I would to buy new device for gentoo, if I was on your side.
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pc_user4
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PostPosted: Sat Aug 10, 2024 9:57 am    Post subject: Reply with quote

Thank you for your reply. Unfortunately, I already have linux-firmware, so I fear I may not be able to use this card if I insist on using a pre-compiled kernel.
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pietinger
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PostPosted: Sat Aug 10, 2024 11:42 am    Post subject: Re: RTL8822BE disappearing after a minute without Genkernel Reply with quote

pc_user4 wrote:
[...] but I want it to work with gentoo-kernel-bin. [...]

You should not have any problems with our distribution kernel when using the correct use-flags. ENABLE "initramfs" (*) and "dracut" globally and do a re-emerge of installkernel and gentoo-kernel-bin.

*) Usually this use-flag is enabled by default. Maybe you have deselected it for genkernel ?

(see also: https://wiki.gentoo.org/wiki/User:Pietinger/Draft/Quick_Installation_OpenRC_for_an_UEFI_System#Kernel )
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pc_user4
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PostPosted: Sat Aug 10, 2024 11:05 pm    Post subject: Re: RTL8822BE disappearing after a minute without Genkernel Reply with quote

pietinger wrote:
pc_user4 wrote:
[...] but I want it to work with gentoo-kernel-bin. [...]

You should not have any problems with our distribution kernel when using the correct use-flags. ENABLE "initramfs" (*) and "dracut" globally and do a re-emerge of installkernel and gentoo-kernel-bin.

*) Usually this use-flag is enabled by default. Maybe you have deselected it for genkernel ?

(see also: https://wiki.gentoo.org/wiki/User:Pietinger/Draft/Quick_Installation_OpenRC_for_an_UEFI_System#Kernel )


Thanks for the hint, pietinger. :D

In fact I had dracut in my USE flags, but not initramfs - I shall do this.
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pietinger
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PostPosted: Sun Aug 11, 2024 10:18 am    Post subject: Re: RTL8822BE disappearing after a minute without Genkernel Reply with quote

pc_user4 wrote:
Thanks for the hint, pietinger. :D

You are very Welcome ! :D

Have fun with Gentoo ! 8)
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