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No Sound on Intel Panther Lake (LG Gram) - Missing SoundWire Machine Driver for RT1320/RT713 #5750
Description
I am experiencing no audio output from the internal speakers or the 3.5mm headphone jack on a new Intel Panther Lake laptop (LG Gram). The kernel detects the SoundWire amplifiers (Realtek 1320 and 0713) but fails to find a machine driver for the ACPI-reported configuration. It falls back to a generic driver, which only maps the DMIC and HDMI outputs, leaving the primary PCM audio unavailable. This shows up as "Dummy Output" in the output selector
Hardware:
System Model: LG Gram 17Z90U (17Z90U-G.AU85A3)
CPU: Intel Core Ultra (Panther Lake)
Audio Controller: Intel Panther Lake HDMI (sof-audio-pci-intel-ptl)
Amplifiers/Codecs (from dmesg): Realtek part_id 0x1320 and part_id 0x0713
Software / OS:
OS: Arch Linux
Kernel: linux-mainline
SOF Firmware Version: 2.14.1.1
Relevant Kernel Logs
[ 8.340849] sof-audio-pci-intel-ptl 0000:00:1f.3: No SoundWire machine driver found for the ACPI-reported configuration:
[ 8.340853] sof-audio-pci-intel-ptl 0000:00:1f.3: link 1 mfg_id 0x025d part_id 0x1320 version 0x3
[ 8.340855] sof-audio-pci-intel-ptl 0000:00:1f.3: link 3 mfg_id 0x025d part_id 0x0713 version 0x3
[ 8.340859] sof-audio-pci-intel-ptl 0000:00:1f.3: Use SoundWire default machine driver with function topologies
[ 8.340860] sof-audio-pci-intel-ptl 0000:00:1f.3: hda codecs found, mask 4
[ 8.340863] sof-audio-pci-intel-ptl 0000:00:1f.3: NHLT device BT(0) detected, ssp_mask 0x4
[ 8.340864] sof-audio-pci-intel-ptl 0000:00:1f.3: BT link detected in NHLT tables: 0x4
[ 8.340865] sof-audio-pci-intel-ptl 0000:00:1f.3: DMICs detected in NHLT tables: 2
[ 8.342996] sof-audio-pci-intel-ptl 0000:00:1f.3: Firmware paths/files for ipc type 1:
[ 8.342999] sof-audio-pci-intel-ptl 0000:00:1f.3: Firmware file: intel/sof-ipc4/ptl/sof-ptl.ri
[ 8.343000] sof-audio-pci-intel-ptl 0000:00:1f.3: Firmware lib path: intel/sof-ipc4-lib/ptl
[ 8.343001] sof-audio-pci-intel-ptl 0000:00:1f.3: Topology file: function topologies
[ 8.668046] sof_sdw sof_sdw: hda_dsp_hdmi_build_controls: no PCM in topology for HDMI converter 3`
^^^
Please see attached [alsa-info.txt](https://github.com/user-attachments/files/27091121/alsa-info.txt)
Activity
kv2019i commentedon Apr 29, 2026
Ok this is interesting, @bardliao @ujfalusi any ideas why the playback PCMs are not found. The PCH dmic and HDMI PCMs are found, so DSP is fully functional:
Components : 'HDA:80862822,80860101,00100000 cfg-amp:1 mic:dmic cfg-mics:2 iec61937-pcm:7,6,5 spk:rt1320 hs:rt713-sdca'
bardliao commentedon Apr 30, 2026
@superlaser97 Can you rename sof-dyndbg.conf.txt to sof-dyndbg.conf and put it in the /etc/modprobe.d/ folder and share the full dmesg log? We don't know what happened with the limited log.
Use SoundWire default machine driver with function topologiesis expected for Panter Lake.superlaser97 commentedon Apr 30, 2026
Hi @bardliao , i reinstalled arch before collecting the log, please see attached
full_dmesg_log.txt
bardliao commentedon Apr 30, 2026
@superlaser97 The dmesg doesn't include the log that right after boot. But it seems the sound card is created. Can you also share the alsa-info output? @oder-chiou Could you take a look?
superlaser97 commentedon May 1, 2026
Hey @bardliao , please see attached
full_dmesg_log.txt
alsa_info.txt
oder-chiou commentedon May 4, 2026
@superlaser97 The full_dmesg_log.txt file seems to contain insufficient information. Please provide it again. The strings in it should include the keyword "tplg".
bardliao commentedon May 4, 2026
@superlaser97 Please 1.
sudo rm /var/log/kern.log2. attach/var/log/kern.loghere after reboot to get the full dmesg log.superlaser97 commentedon May 7, 2026
Hello @bardliao @oder-chiou , sorry for the delay and the bad dmesg logs, this time it contains the keyword you requested for.
full_dmesg_log.txt
oder-chiou commentedon May 7, 2026
Hi @superlaser97 please help to test the #5761, and provide the dmesg logs.
superlaser97 commentedon May 7, 2026
Hello @oder-chiou please see attached
full_dmesg_log_with_patch_5761.txt
oder-chiou commentedon May 7, 2026
Hi @superlaser97 Please help to use the latest version of the Kernel on thesofproject/linux.
superlaser97 commentedon May 7, 2026
hi @oder-chiou i just tested the build, its not working. Please see output below
dmesg.txt
bardliao commentedon May 8, 2026
@superlaser97 Could you test thesofproject/linux + #5767?
superlaser97 commentedon May 8, 2026
Hello, it works now, both speakers and headphones are showing up.
dmesg.txt
superlaser97 commentedon May 9, 2026
@bardliao
Apologies, i didnt ping in the last message
bardliao commentedon May 11, 2026
@superlaser97 No worries. I didn't miss that comment. I cleaned up the PR and will double check if it will break the existing topology. I will submit the patch if there is no issue.
bardliao commentedon Jul 31, 2026
Close it as #5767 was merged and fixes the issue.
bobo123g commentedon Jul 31, 2026
@bardliao Sorry to ping you again, but the main git branch does not work for me. I don't remember if it was yours or @oder-chiou whose branch I'm running, but I'm running a 7.1-rc1 kernel with sound. The main thesofproject git still leaves me with no sound.
ujfalusi commentedon Jul 31, 2026
@bobo123g, our development branch is topic/sof-dev, you would need that, the patch is in there, or take latest mainline RC kernel (c84179a is the patch upstream)
bardliao commentedon Jul 31, 2026
The
ASoC: Intel: sof_sdw: append dai type to dai link name unconditionallypatch is in the v7.2-rc1 kernel.bobo123g commentedon Jul 31, 2026
@bardliao Sorry to ping you again, I know you're busy. This does look like a kernel issue though, because I have sound on the patched 7.1-rc1. I do not have sound in the latest sof-dev or mainline rc (7.2-rc5). All relevant patches seem to be merged, so I have no idea what's going on.
I've attached a full dmesg of the latest sof-dev.
full_dmesg_sof-dev.txt
bardliao commentedon Aug 3, 2026
[ 6.495834] snd_sof:sof_test_topology_file: sof-audio-pci-intel-ptl 0000:00:1f.3: Failed to open topology file: intel/sof-ipc4-tplg/sof-ptl-rt713-l3-rt1320-l1-2ch.tplgPlease unzip sof-ptl-rt713-l3-rt1320-l1-2ch.zip and put it in the
/lib/firmware/intel/sof-ipc4-tplg/folder and try again.bobo123g commentedon Aug 3, 2026
Amazing! Thank you so much, I really appreciate it!