Hi, Speaker 2 connect to DAC 0x2 was Lenovo requested. This was tune for EQ setting. I didn't know more for this. BR, Kailang > -----Original Message----- > From: Benjamin Poirier <benjamin.poirier@xxxxxxxxx> > Sent: Tuesday, February 11, 2020 4:16 PM > To: Jaroslav Kysela <perex@xxxxxxxx> > Cc: Takashi Iwai <tiwai@xxxxxxx>; Kailang <kailang@xxxxxxxxxxx>; > alsa-devel@xxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > Subject: Re: [PATCH 2/2] ALSA: hda/realtek - Fix Lenovo Thinkpad X1 Carbon > 7th quirk value > > On 2020/02/11 08:40 +0100, Jaroslav Kysela wrote: > [...] > > > > > > In summary, Node 0x17 DAC connection 0x3 offers the loudest max > > > volume and the most detailed mixer controls. That connection is > > > obtained with quirk ALC295_FIXUP_DISABLE_DAC3. Therefore, change the > > > ThinkPad X1 Carbon 7th to use ALC295_FIXUP_DISABLE_DAC3. > > > > The volume split (individual volume control) will cause trouble for > > the UCM volume control at the moment which is the target for this > > device to get the digital microphone working. If there is no > > possibility to share DAC, it would be probably more nice to join the volume > control in the driver. > > > > Have you tried to use 0x03 as source for all four speakers? > > Front speakers are fixed to 0x02. Node 0x14 > Connection: 1 > 0x02 > > > > > Why PA handles the rear volume control with the current driver code in > > the legacy ALSA driver? It should be handled like standard stereo > > device. I'll check. > > The device comes up with "Analog Stereo Output" profile by default. I changed > it to "Analog Surround 4.0 Output" to test controlling each channel individually: > > > > pavucontrol controls are reported with the device configured with > > > the "Analog Surround 4.0 Output" profile. > > > > > You should also test PA with UCM. > > Please let me know what do I need to test exactly? I'm not familiar with UCM. > > ------Please consider the environment before printing this e-mail. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel