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From: devin <maildevinplease@gmail.com>
Date: Sat, 1 Jun 2024 18:01:55 -0400
Message-ID: <CAMY0kPLv-W=cXOzT6MAwu7vWr7GcOLWA0aiygbsuUkOAtMeJzg@mail.gmail.com>
Subject: Realtek RTL8822CE PCIe Frequent Disconnection Issues on Linux
To: linux-wireless@vger.kernel.org
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over my past 3 linux installations i've used both:
- rtw_8822ce (https://github.com/lwfinger/rtw88/, built locally)
- rtw88_8822ce (built in, still unsure what the difference is)
and experienced frequent to very occasional disconnections and general
instability

ive switched between wpa_supplicant and iwd, changed rtw88's options, etc.

through some messing around with options the only difference i've
noticed is that when disable_msi is used, the interface is online yet
never detects any wifi networks, my options are as follows

- no networks being detected:
  - rtw_pci: `support_bf=Y disable_aspm=Y, disable_msi=Y`
  - rtw_core: `support_bf=Y, disable_lps_deep=Y, debug_mask=0`

- networks working (but being disconnected frequently):
  - rtw_pci: `support_bf=Y disable_aspm=Y, disable_msi=N`
  - rtw_core: `support_bf=Y, disable_lps_deep=Y, debug_mask=0`

at different points i switched kernel versions between
- `6.8.5-301.fc40`
- `6.8.10-300.fc40`
- `6.8.11-300.fc40`
- whatever linux mint was using at the time (iirc 5.x)

using fedora40 workstation kde, linux mint, etc

here's some logs that might give more insight into what the issue is:

[  456.737481] wlp2s0: Connection to AP 10:da:43:96:cd:1d lost
[  458.102204] wlp2s0: 80 MHz not supported, disabling VHT
[  458.304693] wlp2s0: authenticate with 10:da:43:96:cd:1d (local
address=c8:94:02:05:c4:a9)
[  458.367851] wlp2s0: send auth to 10:da:43:96:cd:1d (try 1/3)
[  458.375293] wlp2s0: authenticated
[  458.375666] wlp2s0: associate with 10:da:43:96:cd:1d (try 1/3)
[  458.381633] wlp2s0: RX AssocResp from 10:da:43:96:cd:1d
(capab=0x1411 status=0 aid=12)
[  458.382018] wlp2s0: associated
[  458.458488] wlp2s0: Limiting TX power to 30 (30 - 0) dBm as
advertised by 10:da:43:96:cd:1d
[  475.619923] wlp2s0: Connection to AP 10:da:43:96:cd:1d lost
[  477.020238] wlp2s0: 80 MHz not supported, disabling VHT
[  477.221723] wlp2s0: authenticate with 10:da:43:96:cd:1d (local
address=c8:94:02:05:c4:a9)
[  477.284976] wlp2s0: send auth to 10:da:43:96:cd:1d (try 1/3)
[  477.292366] wlp2s0: authenticated
[  477.292871] wlp2s0: associate with 10:da:43:96:cd:1d (try 1/3)
[  477.299281] wlp2s0: RX AssocResp from 10:da:43:96:cd:1d
(capab=0x1411 status=0 aid=12)
[  477.299665] wlp2s0: associated
[  477.302567] wlp2s0: Limiting TX power to 30 (30 - 0) dBm as
advertised by 10:da:43:96:cd:1d

[    4.490323] NET: Registered PF_QIPCRTR protocol family
[    4.728234] alg: No test for hmac(md4) (hmac(md4-generic))
[    4.756452] Generic FE-GE Realtek PHY r8169-0-100:00: attached PHY
driver (mii_bus:phy_addr=r8169-0-100:00, irq=MAC)
[    4.931686] r8169 0000:01:00.0 enp1s0: Link is Down
[    5.306429] usb 1-9: set resolution quirk: cval->res = 384
[    5.306699] usbcore: registered new interface driver snd-usb-audio
[    6.208052] wlp2s0: 80 MHz not supported, disabling VHT
[    6.411522] wlp2s0: authenticate with 10:da:43:96:cd:1d (local
address=c8:94:02:05:c4:a9)
[    6.584173] wlp2s0: send auth to 10:da:43:96:cd:1d (try 1/3)
[    6.587522] wlp2s0: authenticated
[    6.589564] wlp2s0: associate with 10:da:43:96:cd:1d (try 1/3)
[    6.594139] wlp2s0: RX AssocResp from 10:da:43:96:cd:1d
(capab=0x1411 status=0 aid=12)
[    6.594528] wlp2s0: associated
[    6.669503] wlp2s0: Limiting TX power to 30 (30 - 0) dBm as
advertised by 10:da:43:96:cd:1d
[   12.051662] rfkill: input handler disabled

if it's at all important, my kernel params are here:
`ro rootflags=subvol=root noapic rhgb quiet`
(note: for some odd reason i have to use noapic otherwise my boot
screen will just be stuck on the HP logo)

ps: originally this was a windows desktop that i wiped to install
linux, ive heard its an issue with fastboot which i probably
originally had on before wiping my ssd

if you need any extra info i'm readily available in order to try and solve this,
thanks so much for your help.