Hello skj22306! There is a lot of information and AI is suggesting way more than what you are describing.
It is not clear to me what the symptom of the failure is. I suggest being a bit more concise. Let us know the symptom, and the actual relevant logs. For example, you said it found an error with your sound card. What is the symptom? Also, you mentioned something about fixing Bluetooth and afterwards having problems with your audio. Can you describe your changes? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-6.8 in Ubuntu. https://bugs.launchpad.net/bugs/2116741 Title: Creative Sound Blaster X-Fi kernel bug Status in linux-hwe-6.8 package in Ubuntu: New Bug description: I used AI to effect repairs for bluetooth, which it seemed to finally resolve, but it seemed to also have found an kernel issue for my soundcard. AI suggests that I report the found kernel bug: Kernel version: Linux user-pc 6.8.0-60-generic #63~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 22 19:00:15 UTC 2 x86_64 x86_64 x86_64 GNU/Linux Card Info: lspci: 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 02) 00:01.0 PCI bridge: Intel Corporation 82G33/G31/P35/P31 Express PCI Express Root Port (rev 02) 00:19.0 Ethernet controller: Intel Corporation 82562V-2 10/100 Network Connection (rev 02) 00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02) 00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02) 00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02) 00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02) 00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02) 00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) 00:1f.0 ISA bridge: Intel Corporation 82801IR (ICH9R) LPC Interface Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 4 port SATA Controller [IDE mode] (rev 02) 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02) 00:1f.5 IDE interface: Intel Corporation 82801I (ICH9 Family) 2 port SATA Controller [IDE mode] (rev 02) 01:00.0 VGA compatible controller: NVIDIA Corporation GK208B [GeForce GT 730] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GK208 HDMI/DP Audio Controller (rev a1) 02:00.0 Audio device: Creative Labs EMU20k1 [Sound Blaster X-Fi Series] inxi -A Audio: Device-1: NVIDIA GK208 HDMI/DP Audio driver: snd_hda_intel Device-2: Creative Labs EMU20k1 [Sound Blaster X-Fi Series] driver: snd_ctxfi Sound Server-1: ALSA v: k6.8.0-60-generic running: yes Sound Server-2: PulseAudio v: 15.99.1 running: yes Sound Server-3: PipeWire v: 0.3.48 running: yes Running Ubuntu 22.04.5 LTS Not sure how to pull the package info.... sorry.... Expectation: to help with future releases of Ubuntu Below is the full conversation log with AI: Skip to content Chat history You said: there's errors upon ubuntu bootup, can i see the logs? ChatGPT said: Yes, Ubuntu logs boot errors using the journalctl system. You can view them to diagnose startup issues. 🔍 View Boot Logs in Ubuntu Open a terminal and run: journalctl -b This shows logs for the current boot. To view logs from previous boots, use: journalctl -b -1 # Last boot journalctl -b -2 # Two boots ago 🔎 Filter Only Errors During Boot To show only errors: journalctl -p err -b You can also filter by boot and priority (e.g., warnings and above from last boot): journalctl -p warning -b -1 🧠Other Useful Commands View kernel boot messages: dmesg --level=err,warn See failed systemd services: systemctl --failed Let me know what kind of error you're seeing (e.g., hangs, black screen, disk errors), and I can help interpret the log or guide you to the exact spot. You said: Jul 09 11:12:30 user-pc kernel: UBSAN: array-index-out-of-bounds in /build/linux-hwe-6.8-N8JkCZ/linux-hwe-6.8-6.8.0/sound/pci/ctxfi/ctamixer.c:346:48 Jul 09 11:12:30 user-pc kernel: index 8 is out of range for type 'unsigned char [8]' Jul 09 11:12:30 user-pc kernel: Bluetooth: hci0: BCM: firmware Patch file not found, tried: Jul 09 11:12:30 user-pc kernel: Bluetooth: hci0: BCM: 'brcm/BCM20702B0-19ff-0239.hcd' Jul 09 11:12:30 user-pc kernel: Bluetooth: hci0: BCM: 'brcm/BCM-19ff-0239.hcd' Jul 09 11:12:31 user-pc kernel: Jul 09 11:13:00 user-pc systemd[1]: Failed to start Process error reports when automatic reporting is enabled. Jul 09 11:13:19 user-pc kernel: [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000100] Failed to grab modeset ownership Jul 09 11:13:28 user-pc systemd[1306]: Failed to start Application launched by gnome-session-binary. Jul 09 11:13:28 user-pc systemd[1306]: Failed to start Application launched by gnome-session-binary. Jul 09 11:13:44 user-pc kernel: [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000100] Failed to grab modeset ownership ChatGPT said: Thanks for sharing the logs — here's a breakdown of the issues you're seeing and what you can do: 🔴 1. UBSAN: array-index-out-of-bounds in ctamixer.c UBSAN: array-index-out-of-bounds in /sound/pci/ctxfi/ctamixer.c:346:48 index 8 is out of range for type 'unsigned char [8]' What it means: This is a kernel bug in the driver for a Creative X-Fi sound card (ctxfi). The kernel tried to access index 8 in an array of size 8 — invalid and caught by UBSAN (Undefined Behavior SANitizer). Likely not harmful unless you're using the device and it's malfunctioning. Fix: If the sound card works fine, you can ignore this for now. If it causes audio issues, try: Updating the kernel or removing/disabling the sound card module: sudo modprobe -r snd_ctxfi 🔵 2. Bluetooth Firmware Not Found Bluetooth: hci0: BCM: firmware Patch file not found... What it means: Your Broadcom Bluetooth device is missing its firmware. Fix: Install the missing firmware: sudo apt install firmware-brcm80211 If that package doesn’t exist (it sometimes doesn't on Ubuntu), try: sudo apt install linux-firmware If Bluetooth still doesn’t work, you may need to manually download the .hcd firmware file and place it in /lib/firmware/brcm/. 🟡 3. Failed to start: Process error reports Failed to start Process error reports when automatic reporting is enabled. This is related to Apport, Ubuntu’s crash reporting system. It failed to start, which is harmless unless you're debugging crashes. Fix (optional): You can disable Apport if it's not needed: sudo systemctl disable apport.service 🔴 4. NVIDIA DRM: Failed to grab modeset ownership [drm:nv_drm_master_set [nvidia_drm]] *ERROR* Failed to grab modeset ownership What it means: The NVIDIA kernel driver couldn't take control of the display. This can lead to problems with graphical display, login loops, or multi-monitor setups. Possible causes: Conflicts with Wayland (try switching to Xorg at login) Another graphics driver (e.g., Nouveau) interfering Wrong driver version Fix: Switch to Xorg: At login screen, click gear icon → choose Ubuntu on Xorg. Ensure you’re using the proprietary NVIDIA driver: sudo ubuntu-drivers autoinstall Or install manually: sudo apt install nvidia-driver-535 Then reboot: sudo reboot 🔴 5. gnome-session-binary launch failure Failed to start Application launched by gnome-session-binary. Could be related to a specific app or extension trying to autostart and crashing. Fix: Check what failed: journalctl --user -xe Also check: cat ~/.xsession-errors You might want to look in ~/.config/autostart/ and disable anything you don’t recognize. ✅ Summary of Fixes Issue Fix ctxfi audio driver error Harmless if you’re not using X-Fi card, or modprobe -r snd_ctxfi Bluetooth firmware sudo apt install linux-firmware Apport crash reports sudo systemctl disable apport.service NVIDIA modeset error Use Xorg, sudo ubuntu-drivers autoinstall gnome-session app failure Check ~/.config/autostart/, use journalctl --user -xe If you want, I can help you walk through any of these in more detail or dig into a specific one first. You said: user@user-pc:~$ sudo apt install firmware-brcm80211 [sudo] password for user: Reading package lists... Done Building dependency tree... Done Reading state information... Done E: Unable to locate package firmware-brcm80211 user@user-pc:~$ sudo apt install linux-firmware Reading package lists... Done Building dependency tree... Done Reading state information... Done linux-firmware is already the newest version (20220329.git681281e4-0ubuntu3.37). linux-firmware set to manually installed. 0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded. ChatGPT said: Thanks for trying that. Since firmware-brcm80211 doesn't exist in Ubuntu (it's from Debian or Arch-based systems), and linux-firmware is already installed, but your Broadcom Bluetooth still complains about missing this file: brcm/BCM20702B0-19ff-0239.hcd Let’s manually install the missing firmware. ✅ Step-by-Step: Manually Install Broadcom Bluetooth Firmware 1. Check Your Device ID Run this to confirm the Bluetooth chipset: lsusb | grep -i bluetooth You're looking for something like: Bus 001 Device 005: ID 0a5c:21e8 Broadcom Corp. BCM20702A0 Bluetooth 4.0 The hex part (0a5c:21e8) helps confirm the exact chipset. 2. Download the .hcd Firmware File If your system is looking for: brcm/BCM20702B0-19ff-0239.hcd You can try downloading the generic version: wget https://github.com/winterheart/broadcom-bt-firmware/raw/master/brcm/BCM20702A1-0a5c-21e8.hcd (That link is from a trusted open-source firmware repo.) 3. Install the Firmware Create the firmware directory if it doesn’t exist: sudo mkdir -p /lib/firmware/brcm/ Then move the file into place and rename it: sudo mv BCM20702A1-0a5c-21e8.hcd /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd 4. Reboot and Check Reboot your machine: sudo reboot Then check logs again: dmesg | grep -i bluetooth If the firmware loads correctly, the “Patch file not found” error should be gone, and Bluetooth should function properly. Let me know your lsusb output if you want help finding the exact matching .hcd file. You said: user@user-pc:~$ lsusb | grep -i bluetooth Bus 005 Device 002: ID 19ff:0239 Dynex Bluetooth 4.0 Adapter [Broadcom, 1.12, BCM20702A0] ChatGPT said: Great, thanks — your adapter is: Dynex Bluetooth 4.0 Adapter USB ID: 19ff:0239 Chipset: Broadcom BCM20702A0 Ubuntu is looking for this firmware file: brcm/BCM20702B0-19ff-0239.hcd That exact file isn't distributed by default, but we can work around it by using a compatible firmware. The BCM20702A0 chipset is typically binary-compatible with others in the BCM20702 family. ✅ Manual Fix for BCM20702A0 – Dynex Adapter 1. Download Compatible Firmware We’ll use a well-known Broadcom firmware file: wget https://github.com/winterheart/broadcom-bt-firmware/raw/master/brcm/BCM20702A1-0a5c-21e8.hcd This file is known to work with many BCM20702A0 USB dongles. 2. Install It as the Expected Firmware Create the firmware directory if it doesn’t exist: sudo mkdir -p /lib/firmware/brcm/ Move and rename the firmware so the kernel can find it: sudo mv BCM20702A1-0a5c-21e8.hcd /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd Note: You're renaming the file to match the missing one Ubuntu is asking for. 3. Reboot sudo reboot 4. Check Success After reboot, check: dmesg | grep -i bluetooth You're looking for a message like: Bluetooth: hci0: BCM20702B0 (001.002.014) build ... Or no error at all — that’s a win. Bluetooth should also appear in bluetoothctl or GNOME Bluetooth settings. Let me know if you hit any issues — I can help verify if you have the right firmware or find a better-matched .hcd if needed. You said: Jul 09 11:24:38 user-pc kernel: UBSAN: array-index-out-of-bounds in /build/linux-hwe-6.8-N8JkCZ/linux-hwe> Jul 09 11:24:38 user-pc kernel: index 8 is out of range for type 'unsigned char [8]' Jul 09 11:24:38 user-pc kernel: Bluetooth: hci0: command 0x0c03 tx timeout Jul 09 11:24:38 user-pc kernel: Bluetooth: hci0: BCM: Reset failed (-110) Jul 09 11:24:38 user-pc kernel: Jul 09 11:25:01 user-pc systemd[1]: Failed to start Process error reports when automatic reporting is ena> Jul 09 11:25:20 user-pc kernel: [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000> Jul 09 11:25:28 user-pc systemd[1312]: Failed to start Application launched by gnome-session-binary. Jul 09 11:25:28 user-pc systemd[1312]: Failed to start Application launched by gnome-session-binary. Jul 09 11:25:46 user-pc kernel: [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000> ChatGPT said: Thanks — here’s what the new log tells us after reboot: ❌ Bluetooth: Still Failing to Initialize Bluetooth: hci0: command 0x0c03 tx timeout Bluetooth: hci0: BCM: Reset failed (-110) This suggests the firmware you installed wasn’t accepted by the adapter — the chipset tried to reset but timed out. ✅ Next Steps to Fix the Dynex Bluetooth Adapter Let’s try one of these two options: 🅰 Option 1: Use a Better-Matched Firmware File Your adapter is: 19ff:0239 — Dynex BCM20702A0 There's no exact .hcd for 19ff:0239, but users have reported success using firmware for Dell or Lenovo adapters with the same BCM20702A0 core. Try this file instead: wget https://github.com/winterheart/broadcom-bt-firmware/raw/master/brcm/BCM20702A0-0b05-17cb.hcd Then move and rename it: sudo mv BCM20702A0-0b05-17cb.hcd /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd Then reboot: sudo reboot Check again: dmesg | grep -i bluetooth If this fails too, you can try others like: BCM20702A0-0a5c-21e8.hcd BCM20702A0-0a5c-216c.hcd Repeat the process by renaming whichever file you test to: /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd 🅱 Option 2: Use btattach Workaround (Optional) This is more advanced and usually for UART-attached chipsets, but in some USB cases: sudo btattach -B /dev/ttyUSB0 -P bcm -S 3000000 But most USB dongles don't use serial devices (/dev/ttyUSB*) — likely not needed in your case. 🧼 Optional: Clean Up Firmware Folder You can keep just one .hcd file in /lib/firmware/brcm/ renamed to the expected filename: BCM20702B0-19ff-0239.hcd Try 1–3 of the .hcd variants and reboot each time until it works. Would you like me to recommend the next-best .hcd file based on public matches to 19ff:0239, or do you want to try the one above first? You said: user@user-pc:~$ wget https://github.com/winterheart/broadcom-bt-firmware/raw/master/brcm/BCM20702A0-0b05-17cb.hcd --2025-07-09 12:03:58-- https://github.com/winterheart/broadcom-bt-firmware/raw/master/brcm/BCM20702A0-0b05-17cb.hcd Resolving github.com (github.com)... 140.82.113.4 Connecting to github.com (github.com)|140.82.113.4|:443... connected. HTTP request sent, awaiting response... 404 Not Found 2025-07-09 12:03:58 ERROR 404: Not Found. ChatGPT said: Thanks — that confirms the file is missing (the repo may have changed or removed that specific .hcd). Let’s switch to one that’s still available and very commonly used with BCM20702A0 adapters, including Dynex-branded ones. ✅ Try This Widely-Compatible Firmware wget https://github.com/winterheart/broadcom-bt-firmware/raw/master/brcm/BCM20702A0-0a5c-21e8.hcd Then move and rename it so the kernel sees it as the expected firmware: sudo mkdir -p /lib/firmware/brcm/ sudo mv BCM20702A0-0a5c-21e8.hcd /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd Now reboot: sudo reboot ✅ After Reboot: Check Results Once back up, check whether the firmware was accepted: dmesg | grep -i bluetooth If the timeout/reset error is gone and you see Bluetooth activity, the adapter is working. Let me know what the dmesg shows after trying this — if it still fails, we can try another variant or log the full usb-devices output to match it more precisely. You're making great progress! Based on what you’ve shared, here’s the best next step: 🧩 Step: Use the Exact BCM20702B0-19ff-0239.hcd for Your Dynex Adapter The Dynex 19ff:0239 device expects the exact filename it requests—BCM20702B0-19ff-0239.hcd—and there's a matching firmware file in the repo forums.linuxmint.com +12 github.com +12 linux-hardware.org +12 . 1. Download the Correct Firmware wget https://raw.githubusercontent.com/winterheart/broadcom-bt-firmware/master/brcm/BCM20702B0-19ff-0239.hcd This is the firmware file for your exact USB ID. 2. Move It Into Place sudo mkdir -p /lib/firmware/brcm/ sudo mv BCM20702B0-19ff-0239.hcd /lib/firmware/brcm/ sudo chmod 644 /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd 3. Reboot sudo reboot 4. Verify After logging back in, run: dmesg | grep -i bluetooth ✅ You're looking for lines similar to: Bluetooth: hci0: BCM20702B0-19ff-0239.hcd Patch applied ... Bluetooth: hci0: Broadcom Bluetooth Device If you see that, your dongle should now work flawlessly. ⚠️ Why This Works Your USB adapter is unusual (19ff:0239), and using a generic .hcd often fails because the kernel won't load it for mismatched IDs. Using the device-specific firmware ensures compatibility forum.mod.audio +1 askubuntu.com +1 . Give it a try and share your dmesg output if anything still looks off! You said: user@user-pc:~$ journalctl -p err -b Jul 09 12:08:59 user-pc kernel: usb 5-1: device descriptor read/64, error -110 Jul 09 12:08:59 user-pc kernel: usb 5-1: device descriptor read/64, error -110 Jul 09 12:08:59 user-pc kernel: usb 5-1: device descriptor read/64, error -110 Jul 09 12:08:59 user-pc kernel: usb 5-1: device descriptor read/64, error -110 Jul 09 12:08:59 user-pc kernel: usb 5-1: device descriptor read/8, error -71 Jul 09 12:08:59 user-pc kernel: usb 5-1: device descriptor read/8, error -71 Jul 09 12:08:59 user-pc kernel: usb 5-1: device descriptor read/8, error -71 Jul 09 12:08:59 user-pc kernel: usb 5-1: device descriptor read/8, error -71 Jul 09 12:08:59 user-pc kernel: usb usb5-port1: unable to enumerate USB device Jul 09 12:09:32 user-pc kernel: UBSAN: array-index-out-of-bounds in /build/linux-hwe-6.8-N8JkCZ/linux-hwe> Jul 09 12:09:32 user-pc kernel: index 8 is out of range for type 'unsigned char [8]' Jul 09 12:09:32 user-pc kernel: Jul 09 12:10:05 user-pc systemd[1]: Failed to start Process error reports when automatic reporting is ena> Jul 09 12:10:26 user-pc kernel: [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000> Jul 09 12:10:34 user-pc systemd[1329]: Failed to start Application launched by gnome-session-binary. Jul 09 12:10:34 user-pc systemd[1329]: Failed to start Application launched by gnome-session-binary. Jul 09 12:10:34 user-pc systemd[1329]: Failed to start Application launched by gnome-session-binary. Jul 09 12:10:50 user-pc kernel: [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000> Jul 09 12:10:51 user-pc pulseaudio[1407]: GetManagedObjects() failed: org.freedesktop.DBus.Error.NoReply:> user@user-pc:~$ sudo dmesg | grep -i bluetooth [sudo] password for user: user@user-pc:~$ sudo dmesg | grep -i bluetooth ChatGPT said: Thanks — from this output, here's the updated situation: 🔍 Summary of Log Messages ❌ 1. USB 5-1: device descriptor read error usb 5-1: device descriptor read/64, error -110 usb 5-1: device descriptor read/8, error -71 usb usb5-port1: unable to enumerate USB device This means one of your USB ports or devices isn’t initializing properly. -110 = Timeout -71 = Protocol/stall error This is commonly caused by: Power-hungry USB device (like Bluetooth dongles) without enough voltage Loose connection Bad USB hub or port ✅ Suggestion: Unplug your Bluetooth dongle, then plug it directly into a different USB port (preferably USB 2.0, not USB 3.0/blue). If it was plugged into a front-panel or USB hub, switch to a back- panel port. Try dmesg -w while plugging it in to watch in real-time. ❌ 2. No Output from dmesg | grep -i bluetooth This means the Bluetooth stack isn't seeing any recognized device right now. Likely: The device failed to enumerate (see USB error) Firmware didn’t even get a chance to load This confirms the dongle isn't initialized at all — either due to power issues or a mismatch in firmware. 🔄 Next Actions (Try This Order) 🔌 1. Re-plug to a Different USB Port Then watch live logs: sudo dmesg -w You should see new lines like: usb 5-2: New USB device found... Bluetooth: hci0: Broadcom ... If you still get descriptor errors, try a powered USB hub or a different machine to test the dongle itself. 🧠2. Check That Firmware is Present Make sure you’ve placed the correct file here: /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd And run: ls -l /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd File should exist and be readable. ⚙️ 3. Manually Force Driver Reload If the dongle appears in lsusb (run again to check), you can manually reload drivers: sudo modprobe -r btusb sudo modprobe btusb Then check: dmesg | grep -i bluetooth Want to Go Deeper? If you want me to: Help trace which USB device is failing (usb-devices or lsusb -v) Explore alternate firmware variants Verify if it's a power/driver issue Let me know! A lsusb and real-time dmesg -w during insert would be ideal for next steps. You said: [ 546.600507] usb 5-1: new full-speed USB device number 6 using uhci_hcd [ 546.780528] usb 5-1: New USB device found, idVendor=19ff, idProduct=0239, bcdDevice= 1.12 [ 546.780542] usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 546.780547] usb 5-1: Product: BCM20702A0 [ 546.780551] usb 5-1: Manufacturer: Broadcom Corp [ 546.780554] usb 5-1: SerialNumber: 98588A062D9C [ 547.712392] Bluetooth: Core ver 2.22 [ 547.712463] NET: Registered PF_BLUETOOTH protocol family [ 547.712466] Bluetooth: HCI device and connection manager initialized [ 547.712474] Bluetooth: HCI socket layer initialized [ 547.712507] Bluetooth: L2CAP socket layer initialized [ 547.712518] Bluetooth: SCO socket layer initialized [ 547.844671] usbcore: registered new interface driver btusb [ 547.955539] Bluetooth: hci0: BCM: chip id 73 [ 547.957543] Bluetooth: hci0: BCM: features 0x07 [ 547.974554] Bluetooth: hci0: BCM20702B [ 547.974566] Bluetooth: hci0: BCM20702B0 (002.001.014) build 0000 [ 548.142795] Bluetooth: hci0: BCM20702B0 'brcm/BCM20702B0-19ff-0239.hcd' Patch [ 548.556570] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 548.556581] Bluetooth: BNEP filters: protocol multicast [ 548.556589] Bluetooth: BNEP socket layer initialized [ 548.987578] Bluetooth: hci0: BCM: features 0x07 [ 549.004549] Bluetooth: hci0: BCM20702B0 Generic USB Detuned Class 1 @ 20 MHz - BDROID-TV [ 549.004557] Bluetooth: hci0: BCM20702B0 (002.001.014) build 0557 [ 549.093748] Bluetooth: MGMT ver 1.22 [ 549.125963] NET: Registered PF_ALG protocol family [ 549.277888] Bluetooth: RFCOMM TTY layer initialized [ 549.277912] Bluetooth: RFCOMM socket layer initialized [ 549.277926] Bluetooth: RFCOMM ver 1.11 ChatGPT said: 🎉 Success! Your Dynex Bluetooth dongle is now fully initialized and working correctly. ✅ What's Confirmed from Your Log: usb 5-1: Product: BCM20702A0 Bluetooth: hci0: BCM20702B0 (002.001.014) build 0000 Bluetooth: hci0: BCM20702B0 'brcm/BCM20702B0-19ff-0239.hcd' Patch This confirms: Your dongle was recognized via USB The correct firmware patch was loaded The Bluetooth stack (RFCOMM, BNEP, L2CAP) initialized fully And then: Bluetooth: hci0: BCM20702B0 Generic USB Detuned Class 1 @ 20 MHz - BDROID-TV That means the device is broadcasting and ready to pair. 🧪 Next Steps to Test Bluetooth 🔹 1. Check Bluetooth Service systemctl status bluetooth You should see active (running). 🔹 2. Scan and Pair Use GNOME Bluetooth settings or: bluetoothctl Then inside: power on agent on default-agent scan on You should see nearby devices. You can pair, trust, and connect as needed. 🧼 Optional Cleanup You’re good now, but if you tested other .hcd files before, feel free to delete them from /lib/firmware/brcm/ and keep only: /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd Let me know if you want help pairing a device or automating the connection at login! You said: user@user-pc:~$ ls -l /lib/firmware/brcm/*.hcd lrwxrwxrwx 1 root root 17 Apr 17 02:18 /lib/firmware/brcm/BCM-0a5c-6410.hcd -> BCM-0bb4-0306.hcd -rw-r--r-- 1 root root 54734 Apr 17 02:18 /lib/firmware/brcm/BCM-0bb4-0306.hcd -rw-r--r-- 1 root root 34700 Aug 13 2015 /lib/firmware/brcm/BCM20702A1-0a5c-21e6.hcd -rw-r--r-- 1 user user 35906 Jul 9 12:05 /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd ChatGPT said: Perfect — your firmware setup looks clean and correct: ✅ Current .hcd Firmware Status: You have: ✅ /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd — this is the exact match for your Dynex 19ff:0239 dongle. It’s: Owned by user (fine, but optional to make it owned by root) Correct size (~35 KB is typical) Loading successfully, as your logs confirm 🔧 (Optional) Fix Ownership Just to be consistent with system-installed firmware: sudo chown root:root /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd sudo chmod 644 /lib/firmware/brcm/BCM20702B0-19ff-0239.hcd That’s optional, but recommended. ✅ You’re All Set Bluetooth is working, firmware is in place, and the system is stable. If you ever reinstall Ubuntu or use a Live USB, just keep that .hcd file handy. Let me know if you'd like to: Pair a specific device Auto-connect speakers/headphones at boot Tweak Bluetooth power-saving settings You're in great shape now. You said: what does this mean Jul 09 12:09:32 user-pc kernel: UBSAN: array-index-out-of-bounds in /build/linux-hwe-6.8-N8JkCZ/linux-hwe-6.8-6.8.0/sound/pci/ctxfi/ctamixer.c:346:48 Jul 09 12:09:32 user-pc kernel: index 8 is out of range for type 'unsigned char [8]' ChatGPT said: That message is a kernel runtime warning generated by UBSAN (Undefined Behavior Sanitizer), and here's what it means: ⚠️ Breakdown of the Log: UBSAN: array-index-out-of-bounds in .../sound/pci/ctxfi/ctamixer.c:346:48 index 8 is out of range for type 'unsigned char [8]' 🔍 What it means: The Linux kernel code tried to access the 9th element (index 8) of an array that only has 8 elements (unsigned char[8]), which is undefined behavior. It happened in the file: sound/pci/ctxfi/ctamixer.c — part of the Creative X-Fi (ctxfi) sound card driver. 🧠Why UBSAN Warns You UBSAN is a debugging tool built into the kernel to catch programming errors that can lead to crashes, security issues, or data corruption. This warning is meant more for kernel developers than end users — it doesn't usually crash your system. 🧩 Do You Have a Creative Sound Blaster X-Fi Card? If yes, the driver may have a bug. If sound works, it’s mostly harmless — but reportable upstream. If no, the module may be loading unnecessarily and probing nonexistent hardware. ✅ What You Can Do Option 1: Ignore it If it’s not affecting your system (no sound issues), you can safely ignore it. Option 2: Blacklist the driver (if unused) To stop the kernel from loading this buggy module: Check if it's loaded: lsmod | grep ctxfi If it's there, blacklist it: echo "blacklist snd_ctxfi" | sudo tee /etc/modprobe.d/blacklist-ctxfi.conf Then update initramfs (optional but good practice): sudo update-initramfs -u Reboot: sudo reboot 💬 Summary It's a kernel-level warning caused by a small bug in the Creative sound card driver. It won’t break your system, but if you're not using an X-Fi card, blacklist the driver to avoid the warning altogether. Let me know if you'd like help identifying whether that driver is actually in use on your system. You said: user@user-pc:~$ lspci | grep -i audio 01:00.1 Audio device: NVIDIA Corporation GK208 HDMI/DP Audio Controller (rev a1) 02:00.0 Audio device: Creative Labs EMU20k1 [Sound Blaster X-Fi Series] user@user-pc:~$ inxi -A Audio: Device-1: NVIDIA GK208 HDMI/DP Audio driver: snd_hda_intel Device-2: Creative Labs EMU20k1 [Sound Blaster X-Fi Series] driver: snd_ctxfi Sound Server-1: ALSA v: k6.8.0-60-generic running: yes Sound Server-2: PulseAudio v: 15.99.1 running: yes Sound Server-3: PipeWire v: 0.3.48 running: yes user@user-pc:~$ sudo lshw -C multimedia *-multimedia description: Audio device product: GK208 HDMI/DP Audio Controller vendor: NVIDIA Corporation physical id: 0.1 bus info: pci@0000:01:00.1 logical name: card1 logical name: /dev/snd/controlC1 logical name: /dev/snd/hwC1D0 logical name: /dev/snd/pcmC1D3p logical name: /dev/snd/pcmC1D7p logical name: /dev/snd/pcmC1D8p logical name: /dev/snd/pcmC1D9p version: a1 width: 32 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=snd_hda_intel latency=0 resources: irq:17 memory:fcffc000-fcffffff *-multimedia description: Audio device product: EMU20k1 [Sound Blaster X-Fi Series] vendor: Creative Labs physical id: 0 bus info: pci@0000:02:00.0 logical name: card0 logical name: /dev/snd/controlC0 logical name: /dev/snd/pcmC0D0c logical name: /dev/snd/pcmC0D0p logical name: /dev/snd/pcmC0D1p logical name: /dev/snd/pcmC0D2p logical name: /dev/snd/pcmC0D3p logical name: /dev/snd/pcmC0D4p version: 00 width: 64 bits clock: 33MHz capabilities: pm msi bus_master cap_list configuration: driver=snd_ctxfi latency=64 maxlatency=5 mingnt=4 resources: irq:21 memory:dfffc000-dfffffff memory:dfc00000-dfdfffff memory:d8000000-dbffffff ioport:df00(size=32) ChatGPT said: Thanks — that output clears everything up. ✅ Your System Has Two Audio Devices: NVIDIA HDMI Audio – snd_hda_intel Creative Sound Blaster X-Fi (EMU20k1) – snd_ctxfi So yes, that UBSAN warning: UBSAN: array-index-out-of-bounds in ctamixer.c index 8 is out of range for type 'unsigned char [8]' is coming from the actual driver powering your X-Fi sound card (snd_ctxfi). You're using it. 🎯 What Does This Mean Practically? This warning is real, but not fatal. It's a programming bug in the kernel's Creative Labs driver (ctamixer.c), where the code tries to access one item too far in an array. It's caught by the kernel, but it doesn't crash. Your card is still detected and usable. 🔍 Should You Be Worried? ❌ No, if: Sound output works correctly from your X-Fi card You're not getting system instability, audio glitches, or crashes ✅ Yes, if: You're getting odd audio behavior (e.g., missing channels, crashing audio apps, or pops) You're trying to use advanced mixer features and running into weird bugs 🛠️ What You Can Do 1. Stay on Current Setup if It Works If everything sounds fine and you’re using the X-Fi: Just live with the warning — it’s not affecting normal usage. 2. Disable the X-Fi Card (if not using it) If you're mostly using HDMI or USB audio, and want to silence the error: Blacklist the driver: echo "blacklist snd_ctxfi" | sudo tee /etc/modprobe.d/blacklist-ctxfi.conf sudo update-initramfs -u sudo reboot Then only the NVIDIA audio will be active. 3. File a Bug with Ubuntu This is technically a kernel bug, so you can report it here: 📍 https://bugs.launchpad.net/ubuntu/+source/linux Include: Your kernel version (uname -a) Your card info (lspci, inxi -A) The exact UBSAN message That could help get it patched in future kernels. Let me know if you want to: Switch default output to HDMI or USB Fully remove or replace snd_ctxfi Try newer or older kernels with potentially fixed drivers No file chosenNo file chosen ChatGPT can make mistakes. Check important info. ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.8.0-60-generic 6.8.0-60.63~22.04.1 ProcVersionSignature: Ubuntu 6.8.0-60.63~22.04.1-generic 6.8.12 Uname: Linux 6.8.0-60-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82.8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: user 1420 F...m pulseaudio /dev/snd/controlC0: user 1420 F.... pulseaudio /dev/snd/controlC1: user 1420 F.... pulseaudio CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: XFCE Date: Fri Jul 11 12:43:36 2025 InstallationDate: Installed on 2024-07-10 (366 days ago) InstallationMedia: Ubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64 (20240220) IwConfig: lo no wireless extensions. enp0s25 no wireless extensions. MachineType: Dell Inc. Inspiron 530 ProcFB: 0 simpledrmdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-60-generic root=UUID=a4550880-8602-40bd-b58c-c1f53cfd1c6b ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.8.0-60-generic N/A linux-backports-modules-6.8.0-60-generic N/A linux-firmware 20220329.git681281e4-0ubuntu3.37 RfKill: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no SourcePackage: linux-hwe-6.8 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/24/2009 dmi.bios.release: 1.0 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.18 dmi.board.name: 0FM586 dmi.board.vendor: Dell Inc. dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: OEM dmi.modalias: dmi:bvnDellInc.:bvr1.0.18:bd02/24/2009:br1.0:svnDellInc.:pnInspiron530:pvr:rvnDellInc.:rn0FM586:rvr:cvnDellInc.:ct3:cvrOEM:sku: dmi.product.name: Inspiron 530 dmi.sys.vendor: Dell Inc. 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