[Solved] cross-posted from: https://lemmy.world/post/41957406
Exact problem as this archwiki forum post
I have also tried everything and at last here I am asking for any help, otherwise I don’t think I would be able to continue using Linux on this laptop. I’ve tried everything from changing the kernel package to enabling all firmwares to using every kernel parameter I can find everything, nothing says any error or something anywhere. Only error i can find is
hci device capabilities -22
Edit: The patch i needed was to add the driver info in btusb.c file. In nixos this is how you do it
boot = {
kernelPatches = [
{
name = "add-realtek-8852ce-btusb";
patch = ./btusb.patch;
}
];
}
first what you should do is git clone the linux kernel version you are using check using uname -r
for me it was 6.12.(whatever, doesn’t matter)
git clone --depth=1 git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git v6.12
then find the btusb.c file in drivers/bluetooth/ and add the line
{ USB_DEVICE(0x13d3, 0x3612), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
after these lines
static const struct usb_device_id quirks_table[] = {
BTUSB_WIDEBAND_SPEECH },
{ USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
BTUSB_WIDEBAND_SPEECH },
now we have made chages to this file right? it will be shows in git diff, so now you should be able to do git diff > btusb.patch
this will create a .patch file, now copy this file to wherever folder you put the nixos configuration in, most likely /etc/nixos if not using custom config.
Thats it!, now rebuild the configuration and DONE.
props to @Maiq.
Author of patch: vedantsg123
I will try to get this patch upstream to not having to do this manually.
So I tried that and bluetooth also didn’t work there. I even went ahead and tried multiple distros to see if it was specific to nixos with same results.
On the crosspoast there was a comment that suggested flushing the power from the machine. I had an asus laptop that bluetooth would fail after switching to linux from windows (dualboot). The only fix was to boot to windows and shut bluetooth off. I never thought about flushing the charge from the motherboard which might have been a solution to that issue.
I would search for your motherboard make model and see if their is an option to reset your chips. On my asus laptop you unplug the power and hold the power for 30 seconds.
Another option might be to try a windows live usb. If the bluetooth works there try disabling it in windows.
If all the above fails it is likely the hardware. Might take it to a computer tech to see if they can fix it?
First of all thank you. So yes I have a dual boot system, with windows and nixos.
I tried turning the bluetooth off in windows and booting into nixos, but it didn’t work. And I am sure it’s not a hardware issue because bluetooth works in windows.
I tried cold booting as well with same results.
There are no proper logs as well that suggest anything, in lsmod, lsusb, hciconfig, dmesg (hci capabilities -22 was only one, which I think is just cosmetic).
The scan on in bluetoothctl only shows the laptop’s mac address which means bluetooth does work but somehow it’s not finding the devices to connect to.
https://gist.github.com/VedantSG123/8ccc4915ea80bd79340f8e5c052cef88
So fast. Wow I couldn’t even find that resource in all my searching. So Nows the tough part, I hoped I was an expert nixos user. I will try to implement this somehow (cough vibe code), but any more hints would be appreciated. One thing I know the direction to go is patching kernel, which I have seen a repo do, so I will try to copy that.
I have no nixos experience so I would not be the best person to ask. You could try asking a new question on lemmy with the updated info asking for nixos specific help on the best way to translate the github gist to something a bit more familiar to you.
You might be able to ask the author of the github gist for advice?
Glad I could at least hopefully point you in the right direction.
I’ll do that. Thank you so much 🤗
I recommend if/when you do, add the link in this post for posterity!
Went ahead and explained it even, also posted on the original arch forum.
Any time and good luck!
Brother guess what? It actually fixed it. OMG I am soo happy, at last it got fixed, i was trying it for the last week and didn’t work, but you swoop and in an instant fixed it. I just can’t thank you enough really. I am really greatful to you.
It’s good news at least that your hardware is working.
I’m unfamiliar with nixos, you might try using different kernels. Try the latest one and maybe a few kernels behind the one your using now.
Does your bt card need firmware?
I did try the latest kernel and also the 6.1 lts kernel with no luck.
I don’t know about the firmware. Can you tell me how to check that? Thank you.