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Re: Slow RTL8822CE 802.11ac PCIe Wireless Network Adapter

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On 5/5/23 01:04, Larry Finger wrote:
On 5/3/23 22:10, Alexey Kardashevskiy wrote:
My bad, I should have mentioned that I tried this one as well, https://github.com/lwfinger/rtw88/commit/75e2c81 3weeks old, no difference there.

And it does not look like there was any change related to my problem since then, is it still worth trying the very latest version? Btw reboot is not really required, it is Linux, not Windows, rmmod+modprobe should do 😉 Thanks,

I added a bunch of stuff on April 24-25, so a 3-week old pull would have missed some important stuff.

The problem with rmmod+modprobe is that the rtw88_core module is not removed, certainly not with a 'sudo modprobe -rv rtw88_8822ce, and it is really easy to get a mixed bunch. I get tired of explaining that to a bunch of newbies, thus I recommend a reboot. Of course, I do not reboot.

Turns out I had to reboot because of the module signature :-/

Anyway it does not appear to work any better. Below are bad ping and good ping, the difference is moving laptop 2cm to the left. I believe the right driver is loaded as the modules are "rtw_" and not "rtw88_". It is quite bizarre how moving the laptop for a little bit helps and moving it back does not necessarily put it in the bad state, may be there is a microcrack in some PCB or something :-/


aik@aiemdeew ~> ping -c3 192.168.10.200 ; iw wlp1s0 link | grep signal
PING 192.168.10.200 (192.168.10.200) 56(84) bytes of data.
64 bytes from 192.168.10.200: icmp_seq=1 ttl=64 time=7707 ms
64 bytes from 192.168.10.200: icmp_seq=2 ttl=64 time=6677 ms
64 bytes from 192.168.10.200: icmp_seq=3 ttl=64 time=5653 ms

--- 192.168.10.200 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2054ms
rtt min/avg/max/mdev = 5653.382/6679.203/7706.911/838.350 ms, pipe 3
	signal: -56 dBm
aik@aiemdeew ~> ping -c3 192.168.10.200 ; iw wlp1s0 link | grep signal
PING 192.168.10.200 (192.168.10.200) 56(84) bytes of data.
64 bytes from 192.168.10.200: icmp_seq=1 ttl=64 time=3.35 ms
64 bytes from 192.168.10.200: icmp_seq=2 ttl=64 time=3.48 ms
64 bytes from 192.168.10.200: icmp_seq=3 ttl=64 time=3.84 ms

--- 192.168.10.200 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 3.347/3.553/3.837/0.207 ms
	signal: -55 dBm


aik@aiemdeew ~> modinfo rtw_8822ce
filename: /lib/modules/6.2.9-100.fc36.x86_64/kernel/drivers/net/wireless/realtek/rtw88/rtw_8822ce.ko.xz
license:        Dual BSD/GPL
description:    Realtek 802.11ac wireless 8822ce driver
author:         Realtek Corporation
alias:          pci:v000010ECd0000C82Fsv*sd*bc*sc*i*
alias:          pci:v000010ECd0000C822sv*sd*bc*sc*i*
depends:        rtw_pci,rtw_8822c
retpoline:      Y
name:           rtw_8822ce
vermagic:       6.2.9-100.fc36.x86_64 SMP preempt mod_unload
sig_id:         PKCS#7
signer:         Custom MOK
sig_key:        0C:F6:31:12:B9:95:09:20:A6:62:E6:72:4F:D1:85:00:F4:A6:A9:B6
sig_hashalgo:   sha256
signature:      9F:F1:74:86:E8:B6:63:FA:F5:EC:2C:84:02:75:63:DC:66:C8:99:92:
		9D:A8:1E:2F:FB:5F:50:EE:DD:59:A5:EC:DE:5F:AB:8A:4C:F9:D3:8A:
		CC:CE:BE:3B:55:C8:E9:D9:AF:12:D0:A4:DE:B7:FB:A4:44:B2:F0:96:
		CD:E2:C0:69:0C:A8:EB:1C:9C:BF:A8:91:3E:D2:7F:AD:9B:7D:22:A4:
		3F:33:8F:86:40:DD:B3:42:B9:96:5B:94:CD:0B:E3:38:A0:8E:4E:8C:
		62:38:11:01:D6:16:EC:B6:E2:28:48:07:A0:C4:6C:6C:55:04:01:F6:
		C6:82:7E:F9:DE:EA:D0:20:63:41:4F:0A:D8:27:56:49:F6:84:E2:B9:
		21:DF:3E:4B:C2:A7:C6:0A:8C:B7:66:17:E5:81:13:D6:5E:CA:94:D1:
		E7:60:EF:B1:9D:52:E0:64:F8:4D:C5:54:CE:EF:F5:DC:2F:AA:22:5C:
		81:52:CE:AF:9B:FA:9B:8B:88:99:2F:2C:8E:6A:A3:44:58:3B:6B:08:
		78:43:B1:E9:27:C9:43:E6:49:BB:86:0E:23:10:0E:05:33:0C:23:B0:
		5E:47:92:EE:0B:96:EA:65:92:89:69:DC:73:50:1D:A5:96:5A:11:32:
		C6:2A:69:7A:B6:FE:6A:22:7F:69:61:B1:9B:F1:CF:66
aik@aiemdeew ~> lsmod | grep rtw
rtw_8822ce             16384  0
rtw_8822c             499712  1 rtw_8822ce
rtw_pci                40960  1 rtw_8822ce
rtw_core              319488  2 rtw_8822c,rtw_pci
mac80211             1486848  2 rtw_core,rtw_pci
cfg80211             1273856  2 rtw_core,mac80211


--
Alexey



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