Date: Thu, 16 Apr 2015 10:31:26 -0700 From: David Wolfskill <david@catwhisker.org> To: multimedia@freebsd.org Subject: Sound OK using built-in speakers, but loud "static" with headphones Message-ID: <20150416173126.GG36163@albert.catwhisker.org>
next in thread | raw e-mail | index | archive | help
--L1c6L/cjZjI9d0Eq Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable This is on a fairly new laptop (ref. <https://wiki.freebsd.org/Laptops/Dell_Precision_M4800>, so there is some probability that there's an electrical or mechanical issue with the hardware... but I'd like to eliminate other possibilities before losing the ability to use the machine for several days. The static is loud enough that a colleage (whose cube is diagonally across the aisle from mine at work) heard it (and thought at first that it was an exceptionally busy disk drive). At the moment, the laptop is running: FreeBSD g1-254.catwhisker.org 10.1-STABLE FreeBSD 10.1-STABLE #38 r281579M= /281599:1001512: Thu Apr 16 04:27:12 PDT 2015 root@g1-254.catwhisker.or= g:/common/S1/obj/usr/src/sys/CANARY i386 (I have recent stable/10 & head for both i386 & amd64 readily available -- though the head/i386 is a couple of days old: kernels built both yesterday & today panic early in the boot process, apparently during hda probes. amd64 doesn't exhibit that.) /dev/sndstat says: Installed devices: pcm0: <NVIDIA (0x0042) (HDMI/DP 8ch)> (play) pcm1: <NVIDIA (0x0042) (HDMI/DP 8ch)> (play) pcm2: <Realtek (0x0292) (Analog 2.0+HP/2.0)> (play/rec) default pcm3: <Realtek (0x0292) (Analog)> (play/rec) The auto-created devices relevant to the above: crw-rw-rw- 1 root wheel 0x9e Apr 16 06:05:04 2015 /dev/dsp0.0 crw-rw-rw- 1 root wheel 0xa5 Apr 16 06:05:04 2015 /dev/dsp0.1 crw-rw-rw- 1 root wheel 0x9f Apr 16 06:05:04 2015 /dev/dsp1.0 crw-rw-rw- 1 root wheel 0xa3 Apr 16 06:05:04 2015 /dev/dsp1.1 crw-rw-rw- 1 root wheel 0xa2 Apr 16 09:21:58 2015 /dev/dsp2.1 crw-rw-rw- 1 root wheel 0xa1 Apr 16 06:05:04 2015 /dev/dsp3.0 crw-rw-rw- 1 root wheel 0xa4 Apr 16 06:05:04 2015 /dev/dsp3.1 crw-rw-rw- 1 root wheel 0x4c Apr 16 06:01:12 2015 /dev/mixer0 crw-rw-rw- 1 root wheel 0x4d Apr 16 06:01:12 2015 /dev/mixer1 crw-rw-rw- 1 root wheel 0x4e Apr 16 06:01:12 2015 /dev/mixer2 crw-rw-rw- 1 root wheel 0x4f Apr 16 06:01:12 2015 /dev/mixer3 cr--r--r-- 1 root wheel 0x5 Apr 16 06:44:42 2015 /dev/sndstat Relevant excerpts from dmesg: =2E.. vgapci0: Boot video device hdac0: <NVIDIA (0x0e1b) HDA Controller> mem 0xf5080000-0xf5083fff irq 17 at= device 0.1 on pci1 xhci0: <Intel Lynx Point USB 3.0 controller> mem 0xf7120000-0xf712ffff irq = 16 at device 20.0 on pci0 =2E.. usbus1 on ehci0 hdac1: <Intel Lynx Point HDA Controller> mem 0xf7130000-0xf7133fff irq 22 a= t device 27.0 on pci0 pcib2: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0 =2E.. load_dn_sched dn_sched WF2Q+ loaded hdacc0: <NVIDIA (0x0042) HDA CODEC> at cad 0 on hdac0 hdaa0: <NVIDIA (0x0042) Audio Function Group> at nid 1 on hdacc0 pcm0: <NVIDIA (0x0042) (HDMI/DP 8ch)> at nid 5 on hdaa0 pcm1: <NVIDIA (0x0042) (HDMI/DP 8ch)> at nid 7 on hdaa0 hdacc1: <Realtek (0x0292) HDA CODEC> at cad 0 on hdac1 hdaa1: <Realtek (0x0292) Audio Function Group> at nid 1 on hdacc1 pcm2: <Realtek (0x0292) (Analog 2.0+HP/2.0)> at nid 20,21 and 24,25 on hdaa1 pcm3: <Realtek (0x0292) (Analog)> at nid 22 and 18 on hdaa1 usbus1: 480Mbps High Speed USB v2.0 =2E... Relevant excerpts from output of "pciconf -lv": =2E.. hdac1@pci0:0:27:0: class=3D0x040300 card=3D0x05cc1028 chip=3D0x8c20808= 6 rev=3D0x04 hdr=3D0x00 vendor =3D 'Intel Corporation' device =3D 'Lynx Point High Definition Audio Controller' class =3D multimedia subclass =3D HDA =2E.. hdac0@pci0:1:0:1: class=3D0x040300 card=3D0x05cc1028 chip=3D0x0e1b10d= e rev=3D0xa1 hdr=3D0x00 vendor =3D 'NVIDIA Corporation' class =3D multimedia subclass =3D HDA =2E... The "hw.snd" sysctl OIDs: g1-254(10.1-S)[14] sysctl hw.snd.|sort hw.snd.compat_linux_mmap: 0 hw.snd.default_auto: 0 hw.snd.default_unit: 2 hw.snd.feeder_eq_exact_rate: 0 hw.snd.feeder_eq_presets: PEQ:16000,0.2500,62,0.2500:-9,9,1.0:44100,48000,8= 8200,96000,176400,192000 hw.snd.feeder_rate_max: 2016000 hw.snd.feeder_rate_min: 1 hw.snd.feeder_rate_polyphase_max: 183040 hw.snd.feeder_rate_presets: 100:8:0.85 100:36:0.92 100:164:0.97 hw.snd.feeder_rate_quality: 1 hw.snd.feeder_rate_round: 25 hw.snd.latency: 5 hw.snd.latency_profile: 1 hw.snd.maxautovchans: 16 hw.snd.report_soft_formats: 1 hw.snd.report_soft_matrix: 1 hw.snd.verbose: 0 hw.snd.version: 2009061500/i386 hw.snd.vpc_0db: 45 hw.snd.vpc_autoreset: 1 hw.snd.vpc_mixer_bypass: 1 hw.snd.vpc_reset: 0 g1-254(10.1-S)[15]=20 Output of "mixer" when the effect is perceived: g1-254(10.1-S)[23] foreach n ( `jot 4 0` ) foreach? echo "/dev/mixer${n}:" foreach? mixer -f /dev/mixer$n foreach? echo "" foreach? end /dev/mixer0: Mixer vol is currently set to 0:0 Mixer pcm is currently set to 0:0 /dev/mixer1: Mixer vol is currently set to 0:0 Mixer pcm is currently set to 0:0 /dev/mixer2: Mixer vol is currently set to 0:0 Mixer pcm is currently set to 100:100 Mixer speaker is currently set to 59:59 Mixer line is currently set to 1:1 Mixer mic is currently set to 67:67 Mixer mix is currently set to 37:37 Mixer rec is currently set to 37:37 Mixer igain is currently set to 0:0 Mixer ogain is currently set to 100:100 Recording source: mic /dev/mixer3: Mixer vol is currently set to 0:0 Mixer pcm is currently set to 0:0 Mixer rec is currently set to 37:37 Mixer igain is currently set to 0:0 Mixer ogain is currently set to 0:0 Mixer monitor is currently set to 56:56 Recording source: monitor g1-254(10.1-S)[28]=20 (I had manually set vol & pcm to 0 for mixer0 & mixer1, and set vol to 0 for mixer2 & mixer3.) If I set vol to (say) 85 for mixer2 (default), the static remains the same, but I am able to (also) hear the intended audio. Using the (internal/system) speakers, sound Just Works as I'm used to -- but a bit more disruptive at work than I'd prefer for viewing & listening to an instructional video. How may I diagnose this? Thanks! Peace, david --=20 David H. Wolfskill david@catwhisker.org Those who murder in the name of God or prophet are blasphemous cowards. See http://www.catwhisker.org/~david/publickey.gpg for my public key. --L1c6L/cjZjI9d0Eq Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQJ8BAEBCgBmBQJVL/HuXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ4RThEMDY4QTIxMjc1MDZFRDIzODYzRTc4 QTY3RjlDOERFRjQxOTNCAAoJEIpn+cje9Bk76c0P/j3rIm0bfvNYBEciBxKUEd4y +JlXP/oVJHY7H13de8mVK4ZOeOshCLQXa6S2nzN6wWYqCz71kwFptCT92FjbLjud E4A0gvEWc5yLbXTNNWtVV6n0UZ/26uwPwmJww00c2vN6hVBgLrxA8TxadnSUMo8T hMRqA6RmwzSHOukAiAijeBeiModECmC7HJ73MkHE1wbwJkAVdG+eV3KZ35GkrR3v Twq7UoMAXNUGFJjPmUH/RIhMWbyJmb991HmYN9NelGvd33/wTT0fBHUMASLq5rip PEyMXD421Tr3P0dze49i81q5EHzFVeA0Wko74uwEApIQ/0sZgIGq6sAQzWPPL+3u x4DyFp3AzNR5eJTBD3v/ksrz4oyV4WAuJXftbIuXcAMEyb0grHr96Q9Q4VhO1N7V ZWLCd8mUaVzYUEoryUlO0zRXGR8IThZUl9KEognVcSRFZqZN5H+t3zcPleLqr5xd MOiU8WgobOmx59MuJm719d0yUVwpNDprA9P/nrnxRg72KIFzuYqQpoQDEtQRogb2 4x4CJuGwOVfvp7xOHO7ijVskXo9P2HuaRUU/zphi3Bn5j/Qri3deioFlZz0725NI zSYxIGT8po98iZRkBtbkJThGeQxSwtkCPorg6JWrPPfKK/Ja8rFH4JgiV8qOzf/E 9yDMCclqD5ln66eIM+Qg =1C10 -----END PGP SIGNATURE----- --L1c6L/cjZjI9d0Eq--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20150416173126.GG36163>