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#1 2021-03-06 07:44:02

ski17
Member
Registered: 2021-03-06
Posts: 5

[Solved] Dell XPS 15 9500 i9 version ath11k crashed

Hello there, I'm trying to get my Killer Wi-Fi 6 AX500-DBS to work on my XPS 15 9500 with i9 cpu. Installed Arch with no problem, but the wireless card is gone from "ip link" once I boot into the freshly installed system. Here is some information: (hand-typing everything)

# uname -a
Linux arch 5.11.2-arch1-1 #1 SMP PREEMPT Fri, 26 Feb 2021 18:26:41 +0000 x86_64 GNU/Linux
# dmesg | grep firmware
[1.62...] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[1.80...] i915 finished loading DMC firmware......
[1.99...] psmouse assuming hardware version 4......
[2.05...] nouveau 0000:01:00.0: pmu: firmware unavailable
[7.004154] ath11k_pci 0000:6c:00.0: firmware crashed: MHI_CB_SYS_ERROR

The last error is definitely the most suspicious for breaking the Wi-Fi card, but I couldn't find many details about this error on this forum or google. "journalctl" doesn't provide any more specific details either. Is there anything I can do at this point to get my Wi-Fi working again? I can probably plug my bootable usb in and chroot to get temporary internet access. Any feedback is welcome. Thank you very much!

(First time posting, let me know if you need more information from me. Thanks!)

Last edited by ski17 (2021-03-07 05:17:48)

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#2 2021-03-06 08:15:30

seth
Member
Registered: 2012-09-03
Posts: 26,666

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

pacman -Qi linux-firmware

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#3 2021-03-06 08:26:02

ski17
Member
Registered: 2021-03-06
Posts: 5

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

Version is 20210208.b79d239-1

Edit: typo

Last edited by ski17 (2021-03-06 08:26:38)

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#4 2021-03-06 08:29:35

seth
Member
Registered: 2012-09-03
Posts: 26,666

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

I had hoped for the answer to be "forgot to install"…

We're gonna need more context around the crash, I assume you're using your phone right now?
https://wiki.archlinux.org/index.php/Tethering

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#5 2021-03-06 08:33:30

ski17
Member
Registered: 2021-03-06
Posts: 5

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

seth wrote:

I had hoped for the answer to be "forgot to install"…

We're gonna need more context around the crash, I assume you're using your phone right now?
https://wiki.archlinux.org/index.php/Tethering

Well I’m using an iPad and another working laptop. I never tried tethering before, but I do have internet access using live usb. Maybe I can do some tweaking with arch-chroot.

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#6 2021-03-06 08:39:58

seth
Member
Registered: 2012-09-03
Posts: 26,666

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

You could usb-walk the journal, along the lines of "sudo journalctl -b > /run/media/mounted_usb_key/journal.txt" and then upload that from the working laptop.
The wifi does work w/ the installation iso?
There you can just "sudo journalctl -b | curl -F 'f:1=<-' ix.io" for comparism.

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#7 2021-03-06 09:11:17

ski17
Member
Registered: 2021-03-06
Posts: 5

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

seth wrote:

You could usb-walk the journal, along the lines of "sudo journalctl -b > /run/media/mounted_usb_key/journal.txt" and then upload that from the working laptop.
The wifi does work w/ the installation iso?
There you can just "sudo journalctl -b | curl -F 'f:1=<-' ix.io" for comparism.

The archiso (working) journal is on http://ix.io/2RR8
The arch (not working) journal is on http://ix.io/2RRf

Sorry it took a little too long...

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#8 2021-03-06 12:55:29

seth
Member
Registered: 2012-09-03
Posts: 26,666

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

crng is late and crosses the device setup - wild shot, though.

https://wiki.debian.org/BoottimeEntropyStarvation

If your CPU doesn't support rdrand, see
https://wiki.archlinux.org/index.php/Haveged (used by the iso)
https://wiki.archlinux.org/index.php/Rng-tools

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#9 2021-03-06 13:22:11

Eosapien
Member
Registered: 2013-12-01
Posts: 1

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

I've had the exact same problem. Turns out the ath11k drivers have some sort of memory accessing bug[1].

The solution suggested is adding "memmap=12M\$20M" to the grub boot options[2]. To do this you can hit 'e' when you are in the grub bootloader and adding it to 'linux' keyword, for me it look something like this:

linux    /vmlinuz-linux root=UUID=4831291a-7e7d-11eb-9439-0242ac130002 rw loglevel=3 memmap=12M\$20M quiet

If this works you can also set this option in your grub.cfg to make it permanent.

[1] https://wireless.wiki.kernel.org/en/use … ers/ath11k
[2] https://bugzilla.kernel.org/show_bug.cgi?id=210923#c4

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#10 2021-03-07 05:16:08

ski17
Member
Registered: 2021-03-06
Posts: 5

Re: [Solved] Dell XPS 15 9500 i9 version ath11k crashed

Eosapien wrote:

I've had the exact same problem. Turns out the ath11k drivers have some sort of memory accessing bug[1].

The solution suggested is adding "memmap=12M\$20M" to the grub boot options[2]. To do this you can hit 'e' when you are in the grub bootloader and adding it to 'linux' keyword, for me it look something like this:

linux    /vmlinuz-linux root=UUID=4831291a-7e7d-11eb-9439-0242ac130002 rw loglevel=3 memmap=12M\$20M quiet

If this works you can also set this option in your grub.cfg to make it permanent.

[1] https://wireless.wiki.kernel.org/en/use … ers/ath11k
[2] https://bugzilla.kernel.org/show_bug.cgi?id=210923#c4

This solution fixed my problem and the wireless card works as expected. I haven't tried seth's solution, but will try it out in the future if the problem persists.

Thanks guys! Really appreciate your help!

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