Bug#1146149: firmware-mediatek: [Mediatek MT7663] Failed to get patch semaphore / failed to load mediatek/mt7663pr2h_rebb.bin

From	Benoit BERTRAND <uses.flocks62@icloud.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1146149: firmware-mediatek: [Mediatek MT7663] Failed to get patch semaphore / failed to load mediatek/mt7663pr2h_rebb.bin
Date	2026-08-30 12:10 +0200
Message-ID	<NxKE9-e8N9-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: firmware-mediatek
Version: 20250410-2
Severity: normal
X-Debbugs-Cc: uses.flocks62@icloud.com

Dear Maintainer,

Since upgrading to Debian 13 (trixie), I get the following messages during boot (this wasn't the case in Bookworm):

dmesg | grep mt
[    0.050517] Performance Events: PEBS fmt4+-baseline,  AnyThread deprecated, Icelake events, 32-deep LBR, full-width counters, Intel PMU driver.
[    3.529760] systemd[1]: Set up automount proc-sys-fs-binfmt_misc.automount - Arbitrary Executable File Formats File System Automount Point.
[    4.122709] mt7615e 0000:02:00.0: enabling device (0000 -> 0002)
[    4.126183] mt7615e 0000:02:00.0: registering led 'mt76-phy0'
[    4.156748] mt7615e 0000:02:00.0 wlp2s0: renamed from wlan0
[    4.174824] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    4.176460] mt7615e 0000:02:00.0: mediatek/mt7663pr2h.bin not found, switching to mediatek/mt7663pr2h_rebb.bin
[    4.177359] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    4.178432] mt7615e 0000:02:00.0: failed to load mediatek/mt7663pr2h_rebb.bin
[    4.383721] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    4.383723] mt7615e 0000:02:00.0: mediatek/mt7663pr2h.bin not found, switching to mediatek/mt7663pr2h_rebb.bin
[    4.384719] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    4.385796] mt7615e 0000:02:00.0: failed to load mediatek/mt7663pr2h_rebb.bin
[    4.587537] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    4.588417] mt7615e 0000:02:00.0: mediatek/mt7663pr2h.bin not found, switching to mediatek/mt7663pr2h_rebb.bin
[    4.588718] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    4.589679] mt7615e 0000:02:00.0: failed to load mediatek/mt7663pr2h_rebb.bin
[    4.795866] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    4.796646] mt7615e 0000:02:00.0: mediatek/mt7663pr2h.bin not found, switching to mediatek/mt7663pr2h_rebb.bin
[    4.797097] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    4.798396] mt7615e 0000:02:00.0: failed to load mediatek/mt7663pr2h_rebb.bin
[    5.006850] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    5.006852] mt7615e 0000:02:00.0: mediatek/mt7663pr2h.bin not found, switching to mediatek/mt7663pr2h_rebb.bin
[    5.007108] mt7615e 0000:02:00.0: Failed to get patch semaphore
[    5.007113] mt7615e 0000:02:00.0: failed to load mediatek/mt7663pr2h_rebb.bin
[    5.251434] mt7615e 0000:02:00.0: N9 Firmware Version: 3.1.1, Build Time: 20200604161656
[    5.251437] mt7615e 0000:02:00.0: Region number: 0x4
[    5.251438] mt7615e 0000:02:00.0: Parsing tailer Region: 0
[    5.330622] mt7615e 0000:02:00.0: Region 0, override_addr = 0x00118000
[    5.330625] mt7615e 0000:02:00.0: Parsing tailer Region: 1
[    5.393379] mt7615e 0000:02:00.0: Parsing tailer Region: 2
[    5.398134] mt7615e 0000:02:00.0: Parsing tailer Region: 3
[    5.399884] mt7615e 0000:02:00.0: override_addr = 0x00118000, option = 3

I have both WiFi and Bluetooth connectivity. But sometimes, while browsing on firefox esr without any particular load on the system, the whole system freezes and I lose both WiFi and Bluetooth.
Upgrading the drivers and kernel with backports haven't solve the issue.

I know my internet router tries to negociate WPA2 and WPA3 at the same time if the device is compatible. This device always uses WPA2 -despite being compatible with WPA3.

Please find below further information about my system:

lspci | grep -i mediatek
0000:02:00.0 Network controller: MEDIATEK Corp. MT7663 802.11ac PCI Express Wireless Network Adapter

sudo modinfo mt7615e
filename:       /lib/modules/6.12.107+deb13-amd64/kernel/drivers/net/wireless/mediatek/mt76/mt7615/mt7615e.ko.xz
firmware:       mediatek/mt7663pr2h_rebb.bin
firmware:       mediatek/mt7663_n9_rebb.bin
firmware:       mediatek/mt7663pr2h.bin
firmware:       mediatek/mt7663_n9_v3.bin
firmware:       mediatek/mt7615_rom_patch.bin
firmware:       mediatek/mt7615_n9.bin
firmware:       mediatek/mt7615_cr4.bin
license:        Dual BSD/GPL
description:    MediaTek MT7615E MMIO helpers
alias:          pci:v000014C3d00007611sv*sd*bc*sc*i*
alias:          pci:v000014C3d00007663sv*sd*bc*sc*i*
alias:          pci:v000014C3d00007615sv*sd*bc*sc*i*
depends:        mt76-connac-lib,mt7615-common,mt76,mac80211
intree:         Y
name:           mt7615e
retpoline:      Y
vermagic:       6.12.107+deb13-amd64 SMP preempt mod_unload modversions 
sig_id:         PKCS#7
signer:         Build time autogenerated kernel key
sig_key:        21:AA:E9:3D:63:8F:53:3C:3F:5C:B6:AF:2C:11:EC:58:08:82:05:52
sig_hashalgo:   sha256
signature:      30:65:02:30:00:C1:9A:DF:88:4C:D1:53:14:3A:60:65:FE:80:7E:23:
		5E:C9:34:46:D9:DB:68:7C:F9:5C:7D:C9:63:EF:AC:C5:05:A7:15:C2:
		4B:7D:7D:4E:88:E8:A7:8F:69:96:E3:D3:02:31:00:A2:06:85:3D:96:
		CC:CA:AD:95:38:77:91:A6:2F:5F:E0:42:C8:C0:77:E3:7E:14:B9:58:
		92:4F:A3:EF:9C:F0:38:B1:53:8C:71:E7:F6:3F:14:16:F3:7F:85:E5:
		5E:8C:67

Thanks for your help.

Best regards,

-- System Information:
Debian Release: 13.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.107+deb13-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

firmware-mediatek depends on no packages.

firmware-mediatek recommends no packages.

Versions of packages firmware-mediatek suggests:
ii  initramfs-tools  0.148.4

-- no debconf information

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Bug#1146149: firmware-mediatek: [Mediatek MT7663] Failed to get patch semaphore / failed to load mediatek/mt7663pr2h_rebb.bin Benoit BERTRAND <uses.flocks62@icloud.com> - 2026-08-30 12:10 +0200
  Processed: Re: firmware-mediatek: [Mediatek MT7663] Failed to get  patch semaphore / failed to load mediatek/mt7663pr2h_rebb.bin "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-09-01 21:20 +0200
  Bug#1146149: firmware-mediatek: [Mediatek MT7663] Failed to get patch semaphore / failed to load mediatek/mt7663pr2h_rebb.bin Benoit BERTRAND <uses.flocks62@icloud.com> - 2026-09-01 21:20 +0200

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