Public bug reported:
Steps to Reproduce
Boot the system with the following changes:
Blacklisted snd_hda_codec_hdmi in /etc/modprobe.d/alsa-base.conf.
Set GRUB parameters to disable HDMI (snd_hda_codec_hdmi.enable=0).
Disabled ALSA power-saving features.
Verified that the HDMI modules (snd_hda_codec_hdmi, snd_hda_codec, etc.) still
load during boot.
Created scripts to unload HDMI modules via initramfs and post-login, which only
work temporarily or partially.
Expected Behavior
The HDMI audio modules should not load, allowing the Intel HDA driver to
function without interference.
Observed Behavior
HDMI audio modules persistently load, overriding the Intel HDA driver,
resulting in inconsistent or non-functional audio output.
System Information
OS Version: Ubuntu $(lsb_release -ds)
Kernel Version: Summary
HDMI audio modules (snd_hda_codec_hdmi) persistently load, causing conflicts
with the Intel HDA audio driver on my Ubuntu system. Despite attempts to
blacklist the HDMI modules and prioritize Intel HDA, the HDMI modules continue
to load, disrupting sound functionality.
Steps to Reproduce
Boot the system with the following changes:
Blacklisted snd_hda_codec_hdmi in /etc/modprobe.d/alsa-base.conf.
Set GRUB parameters to disable HDMI (snd_hda_codec_hdmi.enable=0).
Disabled ALSA power-saving features.
Verified that the HDMI modules (snd_hda_codec_hdmi, snd_hda_codec, etc.) still
load during boot.
Created scripts to unload HDMI modules via initramfs and post-login, which only
work temporarily or partially.
Expected Behavior
The HDMI audio modules should not load, allowing the Intel HDA driver to
function without interference.
Observed Behavior
HDMI audio modules persistently load, overriding the Intel HDA driver,
resulting in inconsistent or non-functional audio output.
System Information
OS Version: Ubuntu 24.04.1 LTS
Kernel Version: 6.8.0-49-generic
Audio Hardware:
lspci -v | grep -A7 -i audio
00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
DeviceName: Onboard - Sound
Subsystem: ASUSTeK Computer Inc. Cannon Lake PCH cAVS
Flags: fast devsel, IRQ 16, IOMMU group 9
Memory at a4330000 (64-bit, non-prefetchable) [size=16K]
Memory at a4100000 (64-bit, non-prefetchable) [size=1M]
Capabilities: <access denied>
Kernel modules: snd_hda_intel, snd_sof_pci_intel_cnl
--
01:00.1 Audio device: NVIDIA Corporation GP108 High Definition Audio Controller
(rev a1)
Subsystem: Gigabyte Technology Co., Ltd GP108 High Definition Audio
Controller
Flags: bus master, fast devsel, latency 0, IRQ 145, IOMMU group 2
Memory at a4080000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
04:00.0 Non-Volatile memory controller: Sandisk Corp SanDisk Ultra 3D /
WD Blue SN550 NVMe SSD (rev 01) (prog-if 02 [NVM Express])
Logs and Diagnostics
Output of lsmod | grep snd_hda:
lsmod | grep snd_hda
snd_hda_ext_core 32768 4
snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda_mlink,snd_sof_intel_hda
snd_hda_codec_hdmi 94208 1
snd_hda_intel 61440 1
snd_intel_dspcfg 36864 3 snd_hda_intel,snd_sof,snd_sof_intel_hda_common
snd_hda_codec 204800 4
snd_hda_codec_hdmi,snd_hda_intel,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hda_core 139264 7
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 192512 11
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,soundwire_intel,snd_sof,snd_sof_intel_hda_common,snd_compress,snd_soc_core,snd_sof_utils,snd_hda_core,snd_pcm_dmaengine
snd 143360 13
snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_sof,snd_timer,snd_compress,snd_soc_core,snd_pcm
Kernel logs (dmesg relevant lines):
dmesg | grep -iE 'audio|snd|hdmi'
returns nothing
Copy code
(Paste relevant lines here)
Audio Hardware:
lspci -v | grep -A7 -i audio
00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
DeviceName: Onboard - Sound
Subsystem: ASUSTeK Computer Inc. Cannon Lake PCH cAVS
Flags: fast devsel, IRQ 16, IOMMU group 9
Memory at a4330000 (64-bit, non-prefetchable) [size=16K]
Memory at a4100000 (64-bit, non-prefetchable) [size=1M]
Capabilities: <access denied>
Kernel modules: snd_hda_intel, snd_sof_pci_intel_cnl
--
01:00.1 Audio device: NVIDIA Corporation GP108 High Definition Audio Controller
(rev a1)
Subsystem: Gigabyte Technology Co., Ltd GP108 High Definition Audio
Controller
Flags: bus master, fast devsel, latency 0, IRQ 145, IOMMU group 2
Memory at a4080000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
04:00.0 Non-Volatile memory controller: Sandisk Corp SanDisk Ultra 3D /
WD Blue SN550 NVMe SSD (rev 01) (prog-if 02 [NVM Express])
Logs and Diagnostics
Output of lsmod | grep snd_hda:
lsmod | grep snd_hda
snd_hda_ext_core 32768 4
snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda_mlink,snd_sof_intel_hda
snd_hda_codec_hdmi 94208 1
snd_hda_intel 61440 1
snd_intel_dspcfg 36864 3 snd_hda_intel,snd_sof,snd_sof_intel_hda_common
snd_hda_codec 204800 4
snd_hda_codec_hdmi,snd_hda_intel,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hda_core 139264 7
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_sof_intel_hda_common,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 192512 11
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,soundwire_intel,snd_sof,snd_sof_intel_hda_common,snd_compress,snd_soc_core,snd_sof_utils,snd_hda_core,snd_pcm_dmaengine
snd 143360 13
snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_sof,snd_timer,snd_compress,snd_soc_core,snd_pcm
Also:
http://alsa-project.org/db/?f=3f4250733fd78d98c4ca465d078c70b01c71c338
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: alsa-base 1.0.25+dfsg-0ubuntu7
ProcVersionSignature: Ubuntu 6.8.0-49.49-generic 6.8.12
Uname: Linux 6.8.0-49-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: steam 5259 F.... pulseaudio
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 25 18:37:14 2024
InstallationDate: Installed on 2020-06-02 (1637 days ago)
InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64
(20200203.1)
MachineType: System manufacturer System Product Name
PackageArchitecture: all
SourcePackage: alsa-driver
UpgradeStatus: Upgraded to noble on 2024-11-22 (3 days ago)
dmi.bios.date: 04/15/2020
dmi.bios.release: 5.13
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2804
dmi.board.asset.tag: Default string
dmi.board.name: TUF Z390-PRO GAMING
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2804:bd04/15/2020:br5.13:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnTUFZ390-PROGAMING:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:skuASUS_MB_CNL:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: ASUS_MB_CNL
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
mtime.conffile..etc.init.d.apport: 2024-07-22T10:59:07
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2024-11-24T21:19:04.053865
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2089612
Title:
HDMI audio modules (snd_hda_codec_hdmi) persistently load, causing
conflicts with the Intel HDA audio driver on my Ubuntu system. Despite
attempts to blacklist the HDMI modules and prioritize Intel HDA, the
HDMI modules continue to load, disrupting sound functionality.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2089612/+subscriptions
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