While going through Ubuntu bugs, I discovered this patch being posted and a confirmation that the patch works as expected.
Finding out how the hw volume really works would be preferrable to just disabling the broken one, but this would be better than nothing. Credit: sndfnsdfin (qawsnews) BugLink: https://bugs.launchpad.net/bugs/559939 Signed-off-by: David Henningsson <david.hennings...@canonical.com> --- sound/usb/mixer.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 4f40ba8..fe56c9d 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1267,6 +1267,13 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void /* disable non-functional volume control */ master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME); break; + case USB_ID(0x1130, 0xf211): + snd_printk(KERN_INFO + "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n"); + /* disable non-functional volume control */ + channels = 0; + break; + } if (channels > 0) first_ch_bits = snd_usb_combine_bytes(bmaControls + csize, csize); -- 1.7.9.5 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/559939 Title: [USB-Audio - USB AUDIO ] no volume control possible with Tenx USB audio adapter Status in “alsa-driver” package in Ubuntu: Confirmed Bug description: When using a "Logilink USB2.0 to Audio Adapter" (which apparently uses a Tenx Technology TP6911 chip, judging from USB id 1130:f211) under Lucid Beta, the volume control does not work. Sound is always played at same volume. The volume slider in panel can be used but doesn't have any effect on volume, except that going down near 0 suddenly mutes the sound. Also, when using the slider in Volume Settings dialog, moving the volume above the 100% mark actually increases playback volume - but I assume this is done by Pulseaudio in software? Aside from the volume issue, the device seems to basically work - it is displayed in Audio Settings as additional input/output device, and it plays sound (didn't test recording, though). According to http://www.tenx.com.tw/product_detail.aspx?ProductID=192 the chip is supposed to have "64-level volume control" - is that not true, or does the driver not make these 64 levels available? This is with up-to-date Lucid Beta, on EeePc 701. The normal built-in sound card works fine, including volume control. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: alsa-base 1.0.22.1+dfsg-0ubuntu3 ProcVersionSignature: Ubuntu 2.6.32-19.28-generic-pae 2.6.32.10+drm33.1 Uname: Linux 2.6.32-19-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: oliver 1121 F.... pulseaudio /dev/snd/controlC0: oliver 1121 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf7eb8000 irq 16' Mixer name : 'Realtek ALC662 rev1' Components : 'HDA:10ec0662,104382a1,00100101' Controls : 13 Simple ctrls : 8 Card1.Amixer.info: Card hw:1 'default'/'USB AUDIO at usb-0000:00:1d.0-2, full speed' Mixer name : 'USB Mixer' Components : 'USB1130:f211' Controls : 4 Simple ctrls : 2 Date: Sat Apr 10 12:11:03 2010 InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Alpha i386 (20100224.3) PackageArchitecture: all ProcEnviron: LANG=de_DE.utf8 SHELL=/bin/bash SelectedCard: 1 default USB-Audio - USB AUDIO SourcePackage: alsa-driver Symptom: audio Title: [USB-Audio - USB AUDIO ] Playback problem dmi.bios.date: 05/16/2008 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1101 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: 701 dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: x.xx dmi.chassis.asset.tag: 0x00000000 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTek Computer INC. dmi.chassis.version: x.x dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1101:bd05/16/2008:svnASUSTeKComputerINC.:pn701:pvrx.x:rvnASUSTeKComputerINC.:rn701:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x: dmi.product.name: 701 dmi.product.version: x.x dmi.sys.vendor: ASUSTeK Computer INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/559939/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
