What is this error?

Please provide more information:
When and where do you see that message?
What is the output that you receive for the following commands (to be executed in a terminal window):

uname -a
lsb_release -crid
lsusb
sudo dmesg | grep -C 7 "cannot get freq"

I recive it in my logs, it is the second error in the logs right now after reboot and it is repeated once again.

journalctl -b 0 -p 3
May 06 08:21:17 Desktop kernel: Bluetooth: hci0: unexpected event for opcode 0x0000
May 06 08:21:17 Desktop kernel: usb 3-10: 3:1: cannot get freq at ep 0x84
May 06 08:21:18 Desktop bluetoothd[1251]: src/adapter.c:reset_adv_monitors_complete() Failed to reset Adv Monitors: Failed (0x03)
May 06 08:21:18 Desktop bluetoothd[1251]: Failed to clear UUIDs: Failed (0x03)
May 06 08:21:18 Desktop bluetoothd[1251]: Failed to set mode: Failed (0x03)
May 06 08:21:18 Desktop bluetoothd[1251]: Failed to add UUID: Failed (0x03)
May 06 08:21:18 Desktop bluetoothd[1251]: Failed to add UUID: Failed (0x03)
May 06 08:21:18 Desktop bluetoothd[1251]: Failed to add UUID: Failed (0x03)
May 06 08:21:21 Desktop canonical-livepatch.canonical-livepatchd[1529]: Task "refresh" returned an error: livepatch check failed: POST request to "https://livepatch.canonical.com/v1/client/d2c571a891e14490810283362b2b9c38/updates" failed, retrying in 30s.
May 06 08:21:21 Desktop kernel: usb 3-10: 3:1: cannot get freq at ep 0x84
May 06 08:21:21 Desktop kernel: usb 3-10: 3:1: cannot get freq at ep 0x84
May 06 08:21:22 Desktop bluetoothd[1251]: Failed to add UUID: Failed (0x03)
May 06 08:21:22 Desktop bluetoothd[1251]: Failed to add UUID: Failed (0x03)
May 06 08:21:22 Desktop bluetoothd[1251]: Failed to add UUID: Failed (0x03)
May 06 08:21:22 Desktop bluetoothd[1251]: Failed to add UUID: Failed (0x03)

Ipls see above

Where is the output of the commands requested in comment #1?

Ah sorry I missed that

amir@Desktop:~$ uname -a
Linux Desktop 6.8.0-31-generic #31-Ubuntu SMP PREEMPT_DYNAMIC Sat Apr 20 00:40:06 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

amir@Desktop:~$ lsb_release -crid
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 24.04 LTS
Release: 24.04
Codename: noble

amir@Desktop:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8009 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 8087:8001 Intel Corp. Integrated Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 0451:2046 Texas Instruments, Inc. TUSB2046 Hub
Bus 003 Device 003: ID 09da:001a A4Tech Co., Ltd. Wireless Mouse & RXM-15 Receiver
Bus 003 Device 004: ID 1bcf:05ca Sunplus Innovation Technology Inc. 2.4GHz 2way RF Receiver
Bus 003 Device 005: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 003 Device 006: ID 04d9:1603 Holtek Semiconductor, Inc. Keyboard
Bus 003 Device 007: ID 046d:0825 Logitech, Inc. Webcam C270
Bus 003 Device 008: ID 06f2:0011 Emine Technology Co. KVM Switch Keyboard
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

amir@Desktop:~$ sudo dmesg | grep -C 7 "cannot get freq"
[sudo] password for amir:
[ 4.413744] usbcore: registered new interface driver uvcvideo
[ 4.414441] Bluetooth: hci0: unexpected event for opcode 0x0000
[ 4.416589] Bluetooth: hci0: CSR: Setting up dongle with HCI ver=4 rev=12e7
[ 4.416594] Bluetooth: hci0: LMP ver=4 subver=12e7; manufacturer=10
[ 4.423445] AVX2 version of gcm_enc/dec engaged.
[ 4.423483] AES CTR mode by8 optimization enabled
[ 4.424068] usbcore: registered new interface driver btusb
[ 4.479786] usb 3-10: 3:1: cannot get freq at ep 0x84
[ 4.536739] usb 3-10: set resolution quirk: cval->res = 384
[ 4.563153] usbcore: registered new interface driver snd-usb-audio
[ 4.912253] at24 0-0052: supply vcc not found, using dummy regulator
[ 4.913844] at24 0-0052: 256 byte spd EEPROM, read-only
[ 4.914376] at24 0-0053: supply vcc not found, using dummy regulator
[ 4.915385] i915 0000:00:02.0: [drm] VT-d active for gfx access
[ 4.920743] at24 0-0053: 256 byte spd EEPROM, read-only
--
[ 5.789353] Bluetooth: MGMT ver 1.22
[ 6.204490] NET: Registered PF_QIPCRTR protocol family
[ 6.923300] Generic FE-GE Realtek PHY r8169-0-200:00: attached PHY driver (mii_bus:phy_addr=r8169-0-200:00, irq=MAC)
[ 7.069502] r8169 0000:02:00.0 enp2s0: Link is Down
[ 7.342811] loop18: detected capacity change from 0 to 8
[ 7.719970] systemd-journald[287]: /var/log/journal/d2c571a891e14490810283362b2b9c38/user-1000.journal: Journal file uses a different sequence number ID, rotating.
[ 8.495476] usb 3-10: reset high-speed USB device number 7 using xhci_hcd
[ 8.889291] usb 3-10: 3:1: cannot get freq at ep 0x84
[ 8.904367] usb 3-10: 3:1: cannot get freq at ep 0x84
[ 9.180131] Bluetooth: RFCOMM TTY layer initialized
[ 9.180139] Bluetooth: RFCOMM socket layer initialized
[ 9.180144] Bluetooth: RFCOMM ver 1.11
[ 10.062390] r8169 0000:02:00.0 enp2s0: Link is Up - 1Gbps/Full - flow control off
[ 10.227352] [UFW BLOCK] IN=enp2s0 OUT= MAC= SRC=192.168.10.203 DST=239.255.255.250 LEN=635 TOS=0x00 PREC=0x00 TTL=1 ID=20274 DF PROTO=UDP SPT=50457 DPT=3702 LEN=615
[ 10.282064] rfkill: input handler disabled
[ 11.176135] kauditd_printk_skb: 67 callbacks suppressed

I am not completely sure, but the message seems to be related to the Logitech Webcam (and not to the bluetooth device).

Is that a built-in camera or one with an USB plug?

If you unplug it and boot, do you still get these messages in the system logs?
If you then plug it in, which messages appear in the logs?

You are correct, it shows the error after i reconnected it after the reboot, any way to fix it?

And I tried different usb ports, all of them gave the same error.

I am sorry, but I have no idea, what the root cause for those messages is.

Does the webcam work?

It seems to work though picture and sound seems like they should be better, I just installed skype, it seemed to work although I had to choose pro Audio in the configuration of Pulse audio Volume control. It may be a while before I can test it in a live session, just wanted ut to be ready, Is there no description on what ep 0x84 means?

The message seems to be issued by the kernel, see https://git.launchpad.net/ubuntu/+source/linux/tree/sound/usb/clock.c#n527 and "ep" seems to indicate the "endpoint".
I doubt that there is a specific meaning in 0x84

ok, thank you