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Groups > linux.debian.kernel > #92628 > unrolled thread
| Started by | Gustavo <gustavompn06@gmail.com> |
|---|---|
| First post | 2026-05-20 15:40 +0200 |
| Last post | 2026-05-24 10:40 +0200 |
| Articles | 4 — 2 participants |
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Bug#1137185: Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88 Gustavo <gustavompn06@gmail.com> - 2026-05-20 15:40 +0200
Bug#1137185: marked as done (Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-05-22 08:30 +0200
Bug#1137185: marked as done (Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-05-22 22:40 +0200
Bug#1137185: marked as done (Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-05-24 10:40 +0200
| From | Gustavo <gustavompn06@gmail.com> |
|---|---|
| Date | 2026-05-20 15:40 +0200 |
| Subject | Bug#1137185: Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88 |
| Message-ID | <MWPjr-6yU3-1@gated-at.bofh.it> |
Package: linux-image-amd64
Version: 6.12.88-1
Severity: important
X-Debbugs-Cc: gustavompn06@gmail.com
Dear Maintainer,
Title:
Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88 with "Failed to
send wmt func ctrl (-22)"
Package: linux-image-amd64
Version: 6.12.88-1
Severity: important
System:
Debian 13 (Trixie)
Kernel affected:
6.12.88+deb13-amd64
Hardware:
Notebook Acer
Bluetooth device:
04ca:3802 Lite-On Technology Corp. MediaTek Bluetooth MT7921
Issue:
Bluetooth stopped working immediately after upgrading from kernel
6.12.85 to 6.12.88.
Bluetooth service starts correctly:
systemctl status bluetooth
Active: active (running)
No rfkill blocks:
rfkill list
0: acer-wireless: Wireless LAN
Soft blocked: no
Hard blocked: no
1: acer-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
Problem symptoms:
bluetoothctl list
(no output)
bluetoothctl:
show
No default controller available
power on
No default controller available
Relevant dmesg output:
Bluetooth: hci0: HW/SW Version: 0x008a008a, Build Time: 20241106151414
Bluetooth: hci0: Failed to send wmt func ctrl (-22)
Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is
advertised, but not supported.
Modules loaded:
btusb
btmtk
mt7921e
mt7921_common
mt76_connac_lib
mt76
lsusb:
04ca:3802 Lite-On Technology Corp. MediaTek Bluetooth MT7921
Regression confirmation:
Booting kernel 6.12.85:
uname -r
6.12.85+deb13-amd64
bluetoothctl list
Controller C0:35:32:A5:1A:5A gus [default]
Bluetooth works normally.
Booting kernel 6.12.88:
uname -r
6.12.88+deb13-amd64
bluetoothctl list
(no controller found)
Conclusion:
Confirmed kernel regression between 6.12.85 and 6.12.88 affecting MediaTek
MT7921 Bluetooth initialization.
-- System Information:
Debian Release: 13.5
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.12.85+deb13-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=pt_BR.UTF-8, LC_CTYPE=pt_BR.UTF-8 (charmap=UTF-8), LANGUAGE=pt_BR:pt:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages linux-image-amd64 depends on:
ii linux-image-6.12.88+deb13-amd64 6.12.88-1
linux-image-amd64 recommends no packages.
linux-image-amd64 suggests no packages.
-- no debconf information
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| From | "Debian Bug Tracking System" <owner@bugs.debian.org> |
|---|---|
| Date | 2026-05-22 08:30 +0200 |
| Subject | Bug#1137185: marked as done (Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88) |
| Message-ID | <MXrys-6Y98-41@gated-at.bofh.it> |
| In reply to | #92628 |
[Multipart message — attachments visible in raw view] — view raw
Your message dated Fri, 22 May 2026 06:18:56 +0000 with message-id <E1wQJDk-00000005mzY-3E4I@fasolo.debian.org> and subject line Bug#1136790: fixed in linux 7.1~rc4-1~exp2 has caused the Debian Bug report #1136790, regarding Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88 to be marked as done. This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact owner@bugs.debian.org immediately.) -- 1136790: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1136790 Debian Bug Tracking System Contact owner@bugs.debian.org with problems
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| From | "Debian Bug Tracking System" <owner@bugs.debian.org> |
|---|---|
| Date | 2026-05-22 22:40 +0200 |
| Subject | Bug#1137185: marked as done (Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88) |
| Message-ID | <MXEP4-76OQ-47@gated-at.bofh.it> |
| In reply to | #92628 |
[Multipart message — attachments visible in raw view] — view raw
Your message dated Fri, 22 May 2026 20:24:17 +0000 with message-id <E1wQWPp-00000008YjE-1CV2@fasolo.debian.org> and subject line Bug#1136790: fixed in linux 7.0.9-1 has caused the Debian Bug report #1136790, regarding Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88 to be marked as done. This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact owner@bugs.debian.org immediately.) -- 1136790: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1136790 Debian Bug Tracking System Contact owner@bugs.debian.org with problems
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| From | "Debian Bug Tracking System" <owner@bugs.debian.org> |
|---|---|
| Date | 2026-05-24 10:40 +0200 |
| Subject | Bug#1137185: marked as done (Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88) |
| Message-ID | <MYcxl-7u0m-59@gated-at.bofh.it> |
| In reply to | #92628 |
[Multipart message — attachments visible in raw view] — view raw
Your message dated Sun, 24 May 2026 08:32:06 +0000 with message-id <E1wR4Fi-0000000FUL8-3XvZ@fasolo.debian.org> and subject line Bug#1136790: fixed in linux 6.12.90-1 has caused the Debian Bug report #1136790, regarding Regression: MediaTek MT7921 Bluetooth fails on kernel 6.12.88 to be marked as done. This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact owner@bugs.debian.org immediately.) -- 1136790: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1136790 Debian Bug Tracking System Contact owner@bugs.debian.org with problems
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