[SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

Jodi42 · 2026-05-16 11:50:33

sudo dmesg | grep -i -E "btusb|mt79|bluetooth"

[sudo] password for shobhit:
[    8.322638] mt7921e 0000:03:00.0: enabling device (0000 -> 0002)
[    8.328459] mt7921e 0000:03:00.0: ASIC revision: 79220010
[    8.404143] mt7921e 0000:03:00.0: HW/SW Version: 0x8a108a10, Build Time: 20260224103145a
[    8.778205] mt7921e 0000:03:00.0: WM Firmware Version: ____000000, Build Time: 20260224103233
[    9.191742] Bluetooth: Core ver 2.22
[    9.191761] NET: Registered PF_BLUETOOTH protocol family
[    9.191762] Bluetooth: HCI device and connection manager initialized
[    9.191765] Bluetooth: HCI socket layer initialized
[    9.191767] Bluetooth: L2CAP socket layer initialized
[    9.191770] Bluetooth: SCO socket layer initialized
[    9.209225] usbcore: registered new interface driver btusb
[    9.212934] Bluetooth: hci0: HW/SW Version: 0x008a008a, Build Time: 20260224103448
[    9.898271] mt7921e 0000:03:00.0 wlp3s0: renamed from wlan0
[   10.122695] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   10.122700] Bluetooth: BNEP filters: protocol multicast
[   10.122708] Bluetooth: BNEP socket layer initialized
[   11.448448] Bluetooth: hci0: Failed to send wmt func ctrl (-22)
[   11.448458] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.

uname --all
Linux arch 7.0.7-arch2-1 #1 SMP PREEMPT_DYNAMIC Thu, 14 May 2026 22:28:27 +0000 x86_64 GNU/Linux

bluetoothctl

Agent registered
[bluetoothctl]> power on
No default controller available
[bluetoothctl]>

All applications like bluetui just freeze.

Now even in lts version bluetooth is not connecting

uname --all
Linux arch 6.18.31-1-lts #1 SMP PREEMPT_DYNAMIC Fri, 15 May 2026 15:01:51 +0000 x86_64 GNU/Linux

sudo dmesg | grep -i -E "btusb|mt79|bluetooth"

[sudo] password for shobhit:
[    9.762458] mt7921e 0000:03:00.0: enabling device (0000 -> 0002)
[    9.770112] mt7921e 0000:03:00.0: ASIC revision: 79220010
[    9.849350] mt7921e 0000:03:00.0: HW/SW Version: 0x8a108a10, Build Time: 20260224103145a
[   10.225103] mt7921e 0000:03:00.0: WM Firmware Version: ____000000, Build Time: 20260224103233
[   10.521327] Bluetooth: Core ver 2.22
[   10.521346] NET: Registered PF_BLUETOOTH protocol family
[   10.521347] Bluetooth: HCI device and connection manager initialized
[   10.521351] Bluetooth: HCI socket layer initialized
[   10.521353] Bluetooth: L2CAP socket layer initialized
[   10.521357] Bluetooth: SCO socket layer initialized
[   10.539520] usbcore: registered new interface driver btusb
[   10.542968] Bluetooth: hci0: HW/SW Version: 0x008a008a, Build Time: 20260224103448
[   11.351693] mt7921e 0000:03:00.0 wlp3s0: renamed from wlan0
[   11.676915] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   11.676919] Bluetooth: BNEP filters: protocol multicast
[   11.676923] Bluetooth: BNEP socket layer initialized
[   12.808817] Bluetooth: hci0: Failed to send wmt func ctrl (-22)
[   12.808825] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.

Last edited by Jodi42 (2026-05-18 13:39:00)

5hridhyan · 2026-05-16 11:55:12

https://bbs.archlinux.org/viewtopic.php?id=313552

Jodi42 · 2026-05-16 12:23:54

I cleared my pacman cache. Is there any other way rolling back

5hridhyan · 2026-05-16 12:29:50

Is there any other way rolling back

https://archive.archlinux.org/

Edit:
as said in the other thread, there have been a "patch", you can wait for the "new" one to rollout

Last edited by 5hridhyan (2026-05-16 12:31:56)

Jodi42 · 2026-05-16 14:16:14

How come switching to lts version did not fix the bluetooth problem??

V1del · 2026-05-16 14:21:25

The patch that broke this was marked as stable and got backported to the LTS releases as well. 7.0.8-arch1 explicitly backported the fix so you could update and switch back to that, LTS is closer to upstream and doesn't contain a similar revert patch, will likely be the next stable release where it's fixed in LTS

Jodi42 · 2026-05-16 14:23:48

I, after knowing the bug, installed lts version but the bug is here as well.

V1del · 2026-05-16 14:31:47

Yes, but if you switch back to linux now and use the updated 7.0.8-arch1 version, this bug should be fixed there, it's currently still present in the latest LTS because a similar backport that was done for linux hasn't been done for linux-lts

Jodi42 · 2026-05-16 14:37:58

sudo pacman -Syu is not giving anything to update.

sudo pacman -Syu
[sudo] password for shobhit:
:: Synchronizing package databases...
 core                  127.2 KiB   209 KiB/s 00:01 [#####################] 100%
 extra                   8.2 MiB  5.52 MiB/s 00:01 [#####################] 100%
 multilib              128.5 KiB   137 KiB/s 00:01 [#####################] 100%
:: Starting full system upgrade...
 there is nothing to do

seth · 2026-05-16 14:41:15

pacman -Syu linux

V1del · 2026-05-16 14:41:29

Then you might have to wait a bit for your mirror to sync or grab it directly

pacman -U https://archlinux.org/packages/core/x86_64/linux/download/

(note that this is somewhat of a partial update but will be fairly safe in this particular instance)

5hridhyan · 2026-05-16 14:42:05

Haha, wait for a while, it depends on mirrors

Edit:
missed TWO replies in a minute!!

Last edited by 5hridhyan (2026-05-16 14:42:42)

Jodi42 · 2026-05-17 18:55:10

The update hasn't been out yet for this bug. Any one knows why. I think this is a big bug.

seth · 2026-05-17 19:01:56

uname -a
pacman -Qs kernel

Last edited by seth (2026-05-17 19:02:26)

Jodi42 · 2026-05-17 19:31:46

updated the mirrorlist using this wiki page https://wiki.archlinux.org/title/Mirrors

Right now I have

Linux arch 7.0.8-arch1-1 #1 SMP PREEMPT_DYNAMIC Fri, 15 May 2026 16:45:15 +0000 x86_64 GNU/Linux

and bluetui is now displaying the menus.

Last edited by Jodi42 (2026-05-17 19:32:16)

seth · 2026-05-17 19:38:39

So it's fixed?
Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

Arch Linux

#1 2026-05-16 11:50:33

[SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#2 2026-05-16 11:55:12

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#3 2026-05-16 12:23:54

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#4 2026-05-16 12:29:50

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#5 2026-05-16 14:16:14

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#6 2026-05-16 14:21:25

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#7 2026-05-16 14:23:48

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#8 2026-05-16 14:31:47

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#9 2026-05-16 14:37:58

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#10 2026-05-16 14:41:15

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#11 2026-05-16 14:41:29

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#12 2026-05-16 14:42:05

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#13 2026-05-17 18:55:10

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#14 2026-05-17 19:01:56

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#15 2026-05-17 19:31:46

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

#16 2026-05-17 19:38:39

Re: [SOLVED] Bluetooth stopped working after linux-kernel upgrade 7.0.6

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