Thank you very much, the solution #21 was the right one for me! I changed the outputdevice from default to HW:0,0 Analog.
Audacity 2.0.5 uname -a Linux G75VX 3.13.0-43-generic #72-Ubuntu SMP Mon Dec 8 19:35:06 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux cat /proc/asound/cards 0 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xf5310000 irq 44 1 [NVidia ]: HDA-Intel - HDA NVidia HDA NVidia at 0xf5080000 irq 17 lspci | grep -i audio 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04) 01:00.1 Audio device: NVIDIA Corporation GK104 HDMI Audio Controller (rev a1) Regards, patrice -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to audacity in Ubuntu. Matching subscriptions: Ubuntu Studio Bugs https://bugs.launchpad.net/bugs/1246092 Title: Ubuntu 13.10 upgrade: audacity sound is trashed, program highly unstable Status in audacity package in Ubuntu: Confirmed Bug description: On playback I get a rough static that crackles corresponding to the waveform intensity; on occasion the sound may start as noise and then flip into proper sound output, but when paused the subsequent playback will produce static and pausing that will crash the program. I have tried Playback set to Alsa/pulse and Alsa/default, both give this behaviour. When the selected sample is played as noise, the scrolling cursor works, but appears to be scrolling by much faster than real- time. also, when the playback works, the scrolling cursor behaves very strangely: the thin line may not move at all, or a segment of it may stay put while another part of it scrolls along with the sound. This is a fresh upgrade to 13.10 on a 64-bit Ubuntu machine, a ZaReason Strata laptop with nvidia sound (according to alsa). Audacity worked fine on 13.04, occasional lock ups, but Audacity is prone to occasional lock-ups, and the sound was fine. Audio works fine with other audio apps including youtubes, totem, vlc and sushi. If I highlight a segment of sound in Audacity and export to disk as mp3, sushi will play the resulting mp3 fine. The problem seems peculiar to Audacity playback. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: audacity 2.0.3-1 ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3 Uname: Linux 3.11.0-12-generic x86_64 NonfreeKernelModules: nvidia AlsaCards: 0 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xc5400000 irq 50 1 [NVidia ]: HDA-Intel - HDA NVidia HDA NVidia at 0xc3000000 irq 17 ApportVersion: 2.12.5-0ubuntu2 Architecture: amd64 Date: Tue Oct 29 17:24:18 2013 InstallationDate: Installed on 2012-04-27 (550 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MarkForUpload: True ProcEnviron: LANGUAGE=en_CA:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/bash SourcePackage: audacity UpgradeStatus: Upgraded to saucy on 2013-10-22 (6 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/audacity/+bug/1246092/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : ubuntustudio-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp