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Re: Problems with RTL8852BE PCIe 802.11ax Wireless Network Controller and Linux kernel 6.7.7-100.fc38.x86_64

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On 5/15/24 11:47 AM, Ping-Ke Shih wrote:
Any idea what could go wrong here? I have tried disabling via all before-mentioned methods and the network
card crashes on both older
and newer kernels despite all my efforts.
What is the kernel version of the newest Fedora? I can try it in my side.

6.8.9-300.fc40.x86_64

It looks like firmware enters abnormal state, so my suggestion is to disable
all power save functions to clarify the problems, but it seems like you
have done all of them.

Is it possible to remove modules from/lib/modules/  ? Then insmod manually
with module parameters to disable power save functions one-by-one?

Not sure, which modules in particular are you referring to so I can isolate this further:

$ ll /lib/modules/$(uname -r)/kernel/net
total 200
drwxr-xr-x. 2 root root 4096 May 13 15:05 6lowpan
drwxr-xr-x. 2 root root 4096 May 13 15:05 802
drwxr-xr-x. 2 root root 4096 May 13 15:05 8021q
drwxr-xr-x. 2 root root 4096 May 13 15:05 9p
drwxr-xr-x. 2 root root 4096 May 13 15:07 appletalk
drwxr-xr-x. 2 root root 4096 May 13 15:07 atm
drwxr-xr-x. 2 root root 4096 May 13 15:07 ax25
drwxr-xr-x. 2 root root 4096 May 13 15:07 batman-adv
drwxr-xr-x. 5 root root 4096 May 13 15:05 bluetooth
drwxr-xr-x. 3 root root 4096 May 13 15:05 bridge
drwxr-xr-x. 3 root root 4096 May 13 15:05 can
drwxr-xr-x. 2 root root 4096 May 13 15:05 ceph
drwxr-xr-x. 2 root root 4096 May 13 15:05 core
drwxr-xr-x. 2 root root 4096 May 13 15:05 dns_resolver
drwxr-xr-x. 2 root root 4096 May 13 15:05 dsa
drwxr-xr-x. 2 root root 4096 May  2 08:00 handshake
drwxr-xr-x. 2 root root 4096 May 13 15:05 hsr
drwxr-xr-x. 3 root root 4096 May 13 15:05 ieee802154
drwxr-xr-x. 2 root root 4096 May 13 15:05 ife
drwxr-xr-x. 3 root root 4096 May 13 15:07 ipv4
drwxr-xr-x. 4 root root 4096 May 13 15:05 ipv6
drwxr-xr-x. 2 root root 4096 May 13 15:05 kcm
drwxr-xr-x. 2 root root 4096 May 13 15:05 key
drwxr-xr-x. 2 root root 4096 May 13 15:07 l2tp
drwxr-xr-x. 2 root root 4096 May 13 15:05 llc
drwxr-xr-x. 3 root root 4096 May 13 15:05 mac80211
drwxr-xr-x. 2 root root 4096 May 13 15:05 mac802154
drwxr-xr-x. 2 root root 4096 May 13 15:05 mpls
drwxr-xr-x. 2 root root 4096 May  2 08:00 mptcp
drwxr-xr-x. 4 root root 4096 May 13 15:05 netfilter
drwxr-xr-x. 2 root root 4096 May 13 15:07 netrom
drwxr-xr-x. 4 root root 4096 May 13 15:05 nfc
drwxr-xr-x. 2 root root 4096 May 13 15:05 nsh
drwxr-xr-x. 2 root root 4096 May 13 15:05 openvswitch
drwxr-xr-x. 2 root root 4096 May 13 15:05 psample
drwxr-xr-x. 2 root root 4096 May 13 15:05 qrtr
drwxr-xr-x. 2 root root 4096 May 13 15:07 rds
drwxr-xr-x. 2 root root 4096 May 13 15:05 rfkill
drwxr-xr-x. 2 root root 4096 May 13 15:07 rose
drwxr-xr-x. 2 root root 4096 May 13 15:05 rxrpc
drwxr-xr-x. 2 root root 4096 May 13 15:07 sched
drwxr-xr-x. 2 root root 4096 May 13 15:05 sctp
drwxr-xr-x. 2 root root 4096 May 13 15:05 smc
drwxr-xr-x. 4 root root 4096 May 13 15:05 sunrpc
drwxr-xr-x. 2 root root 4096 May 13 15:05 tipc
drwxr-xr-x. 2 root root 4096 May 13 15:05 tls
drwxr-xr-x. 2 root root 4096 May 13 15:05 vmw_vsock
drwxr-xr-x. 3 root root 4096 May 13 15:05 wireless
drwxr-xr-x. 2 root root 4096 May 13 15:05 xdp
drwxr-xr-x. 2 root root 4096 May 13 15:05 xfrm

On 5/15/24 1:40 PM, Kalle Valo wrote:
>> Is it possible to remove modules from/lib/modules/  ? Then insmod manually
>> with module parameters to disable power save functions one-by-one?
> BTW it should be also possible to blacklist modules to avoid them being
> loaded automatically. At least in Debian I do this:
>
> $ cat /etc/modprobe.d/kvalo.conf
> blacklist ath11k_pci

Indeed, I guess maybe one way to remove modules on reboot, thanks for the hints!

Regards,
Plamen

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