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I've recently been experiencing interference and lag whenever I simultaneously connect Bluetooth and Wi-Fi using my RTL8852CE card (using rtw89 kernel module) in my laptop. This appears to be a recent development though I can't precisely track when it started. Is there anything I could use to fix this?
I've checked online through many different forum posts etc, but none of them seemed applicable or relevant.
One idea that seemed like it might be the issue is that apparently the chipset supports multiple antennas but the kernel module can't recognise if the inbuilt card has them leading to coex issues: https://bbs.archlinux.org/viewtopic.php?id=208472
This is however a different card, so I don't know how applicable it might be. Also the fix described relies on a patched version that apparently got merged, so shouldn't be an issue anymore…
Most of the methods seem to say simply turning off coex should work, though that only seemed to be said for the iwlwifi driver, and I can't quite reconstruct how that might be possible to achieve with rtw89. Also if possible I would like to be able to use both at the same time as currently I have to switch off one to use the other in any reliable way, which is far less than ideal and afaik switching off coex would only make this automatic/forced.
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Same here.
So I finally did a little digging... and downgrading linux to 6.11.9 (from 6.12.8) fixes the issue. The upgrade to 6.12 happened just around the time the problem started (Nov 23), but I don't remember precisely enough to be sure.
6.12 also uses a newer firmware version in addition to other driver updates, so not clear to me if it is the kernel code or the firmware.
There also appear to be some patches in 6.13 that mention bluetooth vs wifi priority, so I am hopeful a fix is already on its way, but I haven't tried, yet.
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That's good to hear, I thought I'd checked older kernel versions and had the issue there as well, but booting with the lts kernel just now seems to fix it for me too, lets hope those patches in 6.13 fix it on the stable kernel...
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6.13 has not fixed it for me, currently using the lts kernel seems to be the only way I can fix this. Does anyone have any more tips to address this?
From my very rudimentary understanding it looks like this is addressing the issue, right? https://lore.kernel.org/linux-wireless/ … 7db8b775fc
I also can't find what version that would be in, would that land in 6.14 or a 6.13.x release? (afaik the numbers are meaningless anyway, right?)
Last edited by 0815 (Yesterday 12:49:45)
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