I have just tried to reproduce this with my pcmcia layla, alas no luck ! Noahy could you do the same with this libsound.so and attach again the trace from running the control centre from terminal. Sorry about this but you are my only means for debugging this . I have a feeling it must be something to do with USB sound cards.
That produced output should confirm that the usb card is returning is no ports when in fact 'pactl list cards' shows that there are ports. The problem I can see is that my software recognizes the device as a bluetooth device which is a special case whereby the card is valid while the device has no port name. ** Attachment added: "libsoundnua.so" https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/953950/+attachment/2949385/+files/libsoundnua.so -- 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 : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
