Ubuntu

ASUS Xonar U3 volume slider problem

Reported by Denis Washington on 2012-11-12
26
This bug affects 5 people
Affects Status Importance Assigned to Milestone
Linux
New
Undecided
Unassigned
alsa-driver (Ubuntu)
Undecided
Unassigned

Bug Description

I got an ASUS Xonar U3 USB sound card for my Thinkpad T420 for my birthday this year and tried to use it on Ubuntu 12.10. Unfortunately, its sound output is either bearably noticeable or - if I increase the volume by even the slightest notch with the audio indicator - EXTREMELY loud (and, because I use earphones, pretty painfully so).

I did some experiments with alsamixer, and it seems as if the complete volume range that I would expect to be stretched over the complete slider is compressed in the PCM levels between 1 and ~7. This means the only way I can sanefully use the USB sound card right now is by turning the volume in each application very, very low so that I have some amount of precision with the global volume slider (which I can control with function keys), but every time I forget this somewhere, it's a pretty painful surprise, so I hope this can be fixed.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: alsa-base 1.0.25+dfsg-0ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
Uname: Linux 3.5.0-18-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
Date: Mon Nov 12 08:19:30 2012
InstallationDate: Installed on 2012-09-09 (63 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: USB Advanced Audio Device - USB Advanced Audio Device
Symptom_Type: Volume slider, or mixer problems
Title: [USB-Audio - USB Advanced Audio Device, playback] volume slider problem
UpgradeStatus: Upgraded to quantal on 2012-10-18 (24 days ago)
dmi.bios.date: 06/12/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 83ET70WW (1.40 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4180PH1
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr83ET70WW(1.40):bd06/12/2012:svnLENOVO:pn4180PH1:pvrThinkPadT420:rvnLENOVO:rn4180PH1:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4180PH1
dmi.product.version: ThinkPad T420
dmi.sys.vendor: LENOVO

Denis Washington (dwashington) wrote :
Raymond (superquad-vortex2) wrote :

how about the patch which disable spdif ?

http://thread.gmane.org/gmane.linux.alsa.user/36816/focus=36820

Denis Washington (dwashington) wrote :

I don't use S/PDIF, I have regular earphones plugged in. I don't see how that should be related.

Denis Washington (dwashington) wrote :

I need to take this back: I installed the Xonar U3 driver under Windows and after a restart, S/PDIF is also available under Ubuntu; this output option features normal volume control over the whole percentage range. So I guess the kernel patch to turn on S/PDIF would have fixed my problem.

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in alsa-driver (Ubuntu):
status: New → Confirmed
Denis Washington (dwashington) wrote :

Has the kernel patch that Raymond pointed to been added upstream? Unfortunately, the Windows driver only enables S/PDIF on the card until the Xonar U3 is unplugged, so there isn't even a workable workaround.

Denis Washington (dwashington) wrote :

I have reported the problem upstream (in the alsa-devel list) and submitted the S/PDIF patch found in http://thread.gmane.org/gmane.linux.alsa.user/36816/focus=36820. Since then, Linus has merged the change for the 3.8-rc1 kernel:

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=046e7d685bc370fd4c879ab6635ad3f69e6673d1
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=1d31affbef40cea4958da03cf6ec3cea1c7f801e

Considering the change is trivial and this USB sound card model seems to be relatively popular, it might be worth to backport it. I'm using it on Ubuntu 12.10 (self compiled 3.5.0-19-generic Ubuntu kernel) for quite a while without problems.

David Kolibáč (david-kolibac) wrote :

I'm experiencing the same issue on Kubuntu 13.04 with 3.8.0-29-generic kernel.

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