Bugzilla – Bug 1219803
Lenovo Yoga 14APH8 headphones jack requires bass speaker to be full volume
Last modified: 2024-02-20 23:10:19 UTC
Symptoms : When connecting headphones to the laptop's jack it's required to set the Bass Speaker to full volume through alsamixer otherwise we get no sound. Either that or replacing in /usr/share/alsa-card-profile/mixer/paths/analog-output-headphones.conf : [Element Bass Speaker] switch = off volume = off with : [Element Bass Speaker] switch = off volume = merge System info : Operating System: openSUSE Tumbleweed 20240209 KDE Plasma Version: 5.27.10 KDE Frameworks Version: 5.114.0 Qt Version: 5.15.12 Kernel Version: 6.8.0-rc3-3.g7450939-default (64-bit) Graphics Platform: X11 Processors: 16 × AMD Ryzen 7 7840HS with Radeon 780M Graphics Memory: 27.1 Gio of RAM Graphics Processor: AMD Radeon Graphics Manufacturer: LENOVO Product Name: 82Y8 System Version: Yoga Pro 7 14APH8 hwinfo --sound : 12: PCI 6300.1: 0403 Audio device [Created at pci.386] Unique ID: UGCg.OQPqPLYNCh0 Parent ID: JZZT.maS73mB38XF SysFS ID: /devices/pci0000:00/0000:00:08.1/0000:63:00.1 SysFS BusID: 0000:63:00.1 Hardware Class: sound Model: "ATI Audio device" Vendor: pci 0x1002 "ATI Technologies Inc" Device: pci 0x1640 SubVendor: pci 0x17aa "Lenovo" SubDevice: pci 0x3824 Driver: "snd_hda_intel" Driver Modules: "snd_hda_intel" Memory Range: 0x785c8000-0x785cbfff (rw,non-prefetchable) IRQ: 90 (no events) Module Alias: "pci:v00001002d00001640sv000017AAsd00003824bc04sc03i00" Driver Info #0: Driver Status: snd_hda_intel is active Driver Activation Cmd: "modprobe snd_hda_intel" Config Status: cfg=new, avail=yes, need=no, active=unknown Attached to: #27 (PCI bridge) 22: PCI 6300.6: 0403 Audio device [Created at pci.386] Unique ID: puer.m6xb4yIjnP9 Parent ID: JZZT.maS73mB38XF SysFS ID: /devices/pci0000:00/0000:00:08.1/0000:63:00.6 SysFS BusID: 0000:63:00.6 Hardware Class: sound Model: "AMD Family 17h (Models 10h-1fh) HD Audio Controller" Vendor: pci 0x1022 "AMD" Device: pci 0x15e3 "Family 17h (Models 10h-1fh) HD Audio Controller" SubVendor: pci 0x17aa "Lenovo" SubDevice: pci 0x3882 Driver: "snd_hda_intel" Driver Modules: "snd_hda_intel" Memory Range: 0x785c0000-0x785c7fff (rw,non-prefetchable) IRQ: 43 (327 events) Module Alias: "pci:v00001022d000015E3sv000017AAsd00003882bc04sc03i00" Driver Info #0: Driver Status: snd_hda_intel is active Driver Activation Cmd: "modprobe snd_hda_intel" Config Status: cfg=new, avail=yes, need=no, active=unknown Attached to: #27 (PCI bridge)
Please give alsa-info.sh output. Run the script with --no-upload option, and attach the output to Bugzilla (don't paste).
Created attachment 872699 [details] Here is the output of alsa-info.sh
Thanks. The problem is that this device has only two DACs while there are three outputs (speaker, bass speaker and headphone). So the driver tried to assign front and bass, while sharing the same DAC between the bass and the headphone. Admittedly, this doesn't look ideal assignment. We may assign one volume for both speaker and bass speaker (those are tied), and another for the headphone, too. It's a question of trade-off. I'll check a bit more deeply later.
(In reply to Takashi Iwai from comment #3) > Thanks. The problem is that this device has only two DACs while there are > three outputs (speaker, bass speaker and headphone). So the driver tried to > assign front and bass, while sharing the same DAC between the bass and the > headphone. > Admittedly, this doesn't look ideal assignment. > > We may assign one volume for both speaker and bass speaker (those are tied), > and another for the headphone, too. It's a question of trade-off. > > I'll check a bit more deeply later. Thank you very much, while we're at it, I think adding a pass-band filter to the tweeters and bass speakers would help a lot, but I'm unsure if it's already the case and if not if I should open a new ticket to suggest it.