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Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

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niilav
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Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#1 Post by niilav »

Hi!!

I have seen that this kind of errors are related to the kernel. And I have updated the kernel for the compatibility with the wifi card but I still get it.
How can I fix this kind of error?

Code: Select all

[    0.342237] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP2.BCM5], AE_NOT_FOUND (20210604/dswload2-162)
[    0.342397] ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20210604/psobject-220)
[    0.342583] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP1.DEV0], AE_NOT_FOUND (20210604/dswload2-162)
[    0.342733] ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20210604/psobject-220)
[    0.410609] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.WLBU._STA.WLVD], AE_NOT_FOUND (20210604/psargs-330)
[    0.410766] ACPI Error: Aborting method \_SB.WLBU._STA due to previous error (AE_NOT_FOUND) (20210604/psparse-529)
[    0.482158] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.WLBU._STA.WLVD], AE_NOT_FOUND (20210604/psargs-330)
[    0.482323] ACPI Error: Aborting method \_SB.WLBU._STA due to previous error (AE_NOT_FOUND) (20210604/psparse-529)
[    0.557417] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.WLBU._STA.WLVD], AE_NOT_FOUND (20210604/psargs-330)
[    0.557599] ACPI Error: Aborting method \_SB.WLBU._STA due to previous error (AE_NOT_FOUND) (20210604/psparse-529)



thanks in advance
Last edited by niilav on 2022-01-17 20:59, edited 1 time in total.

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Re: Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#2 Post by canci »

The Kernel spews ACPI errors all the time that end up not giving any issues. Sometimes things like power management aren't implemented in a clean fashion by hardware vendors in the way the kernel developers require it, so the kernel warns you about those. However, most of the times, you can ignore those errors if they don't cause any problems. The sad fact is that hardly any hardware vendor sits down and makes hardware specifically for Linux, so in a lot of cases, the Linux kernel developers actually have to work around a lot of trash that's just there because Windows requires it or because the hardware vendors just don't care about implementing it properly.

So, do you experience hardware errors? Is your battery draining too quickly? Is the wifi going to sleep when you don't want it?
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Re: Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#3 Post by niilav »

Thanks

At the moment, since I recently installed debian and I'm gradually configuring everything to my needs, the wifi works very slow.

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Re: Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#4 Post by canci »

And I assume it works alright when you access it from other devices?
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Re: Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#5 Post by niilav »

Yes, only on my debian laptop the wifi connection is very slow.

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Re: Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#6 Post by canci »

Firmware packages are installed as well?
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Re: Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#7 Post by niilav »

I thought that installing firmware-realtek would solve the error that appeared when starting debian:

Code: Select all

[    2.927849] rtw_8821ce 0000:02:00.0: rfe 2 isn't supported
[    2.928016] rtw_8821ce 0000:02:00.0: failed to setup chip efuse info
[    2.928052] rtw_8821ce 0000:02:00.0: failed to setup chip information
But it was not, so I asked here on the forum and they told me to update the kernel from version 5.10 to 5.13 where it seems that this problem was solved. I looked in backports and there was no 5.13 but I was able to install linux-image-5.14.0-0.bpo.2-amd64.
https://bugs.debian.org/cgi-bin/bugrepo ... bug=991297

From this point on, the wifi was working, but I noticed that it was very slow...
I think the firmware for my wifi card rtw_8821ce is not in the package firmware-realtek maybe that's the problem?

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Re: Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#8 Post by yoavt2001@gmail.com »

HI
did your wifi problem was solved . I' am having the same problem with the same realteck . and I am getting the same massage on restart .

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Re: Could not resolve symbol [\_SB.PCI0.GPP2.BCM5]

#9 Post by Head_on_a_Stick »

You could try disabling any power saving options for that module:

Code: Select all

$ for i in /sys/module/rtw88_{core,pci}/parameters/* ; do
> echo "$i: $(cat $i)"
> done
/sys/module/rtw88_core/parameters/debug_mask: 0
/sys/module/rtw88_core/parameters/disable_lps_deep: N
/sys/module/rtw88_core/parameters/support_bf: Y
/sys/module/rtw88_pci/parameters/disable_aspm: N
/sys/module/rtw88_pci/parameters/disable_msi: N
archie:~$
So create a file at /etc/modprobe.d/rtw88.conf with this content:

Code: Select all

options rtw88_core disable_lps_deep=Y
options rtw88_pci disable_aspm=Y
Then reboot.

If that doesn't help the ArchWiki recommends tomaspinho's driver:

https://github.com/tomaspinho/rtl8821ce ... kernel--59
deadbang

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