Thanks for taking a look at this. Yes, it's reproducible every time. As soon as I click on the entry for the mixer (Input tab, Record sound from "PCM2900 Audio Codec Analog Stereo"), the "Sound" window crashes.
It is only since the "Sound" control panel changed to a new look. Attached is the output of `pactl list cards`. ** Attachment added: "pactl list cards" https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/953950/+attachment/2914490/+files/pactl ** Changed in: gnome-control-center (Ubuntu) Status: Incomplete => In Progress -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/953950 Title: [soundnua]: gnome-control-center crashed with SIGSEGV in signal_emit_unlocked_R() Status in “gnome-control-center” package in Ubuntu: In Progress Bug description: Switching the input sound source to my Alesis USB mixer causes the sound control applet to crash, and I can't use the mixer now. It was working prior to recent Precise upgrades. ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: gnome-control-center 1:3.3.91-0ubuntu3 ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9 Uname: Linux 3.2.0-18-generic x86_64 ApportVersion: 1.94.1-0ubuntu2 Architecture: amd64 CrashCounter: 1 Date: Tue Mar 13 17:05:07 2012 ExecutablePath: /usr/bin/gnome-control-center InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) ProcCmdline: gnome-control-center sound-nua SegvAnalysis: Segfault happened at: 0x7f7b4965a06e: mov %esi,0x6c(%rsp) PC (0x7f7b4965a06e) ok source "%esi" ok destination "0x6c(%rsp)" (0x7fff4ed26fcc) not located in a known VMA region (needed writable region)! Stack memory exhausted (SP below stack segment) SegvReason: writing unknown VMA Signal: 11 SourcePackage: gnome-control-center StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 gtk_cell_area_apply_attributes () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0 Title: [soundnua]: gnome-control-center crashed with SIGSEGV in g_signal_emit_valist() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: admin debian-tor sambashare vboxusers usr_lib_gnome-control-center: deja-dup 21.90-0ubuntu1 gnome-bluetooth 3.2.2-0ubuntu3 indicator-datetime 0.3.91-0ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/953950/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

