Description of problem: Users who have a 5 character user name cannot run pidgin or xfce4-mixer. For example, logging in as said user (brand new user on a clean install with all updates from mirror) $ xfce4-mixer ERROR: Caught a segmentation fault while loading plugin file: /usr/lib/gstreamer-0.10/libgstvideoscale.so Please either: - remove it and restart. - run with --gst-disable-segtrap --gst-disable-registry-fork and debug. ERROR: Caught a segmentation fault while loading plugin file: /usr/lib/gstreamer-0.10/libgstvideoscale.so Please either: - remove it and restart. - run with --gst-disable-segtrap --gst-disable-registry-fork and debug. *** glibc detected *** /usr/libexec/gstreamer-0.10/gst-plugin-scanner: free(): invalid next size (normal): 0xMemoryLocationInHex *** $ pidgin *** glibc detected *** pidgin: free(): invalid next size (fast): 0xdifferentMemoryLocationInHex *** Version-Release number of selected component (if applicable): $ rpm -qa | grep glibc glibc-2.14-5.i686 glibc-common-2.14-5.i686 $ rpm -qa | grep xfce4-mixer xfce4-mixer-4.8.0-1.fc15.i686 rpm -qa | grep pidgin pidgin-2.10.0-1.fc15.i686 rpm -qa | grep purple libpurple-2.10.0-1.fc15.i686 How reproducible: Every single time running as a 5 character user name in F15 Steps to Reproduce: 1. Create a user with a 5-character user name (i.e. useradd abcde, passwd abcde) 2. Log out and log back in as the user (into XFCE4 environment to see the mixer isn't working) 3. Run pidgin (you get the error shown above) 4. Run xfce4-mixer (you get the error shown above) Actual results: Error messages appear as shown above Expected results: No error and application loads as normal. Additional info: This was occurring for me on F16 as well, I downgraded back to F15 to get functionality back. Today I did a reload (thanks to a mistake on my part), downloaded all updates and started getting the same issue.
Can you get a backtrace here? 1. debuginfo-download xfce4-mixer 2. yum install gdb 3. gdb /usr/bin/xfce4-mixer 4. run 5. wait for crash, do a 'bt full' Sounding like it's a weird gstreamer issue, but hard to say.
Kevin, I tried to follow the steps you provided, but it hangs after I enter 'run': $ gdb GNU gdb (GDB) Fedora (7.3.1-46.fc15) Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. (gdb) file /usr/bin/xfce4-mixer Reading symbols from /usr/bin/xfce4-mixer...Reading symbols from /usr/lib/debug/usr/bin/xfce4-mixer.debug...done. done. (gdb) run Starting program: /usr/bin/xfce4-mixer [Thread debugging using libthread_db enabled] Detaching after fork from child process 2732. ERROR: Caught a segmentation fault while loading plugin file: /usr/lib/gstreamer-0.10/libgstvideoscale.so Please either: - remove it and restart. - run with --gst-disable-segtrap --gst-disable-registry-fork and debug. Detaching after fork from child process 2733. ERROR: Caught a segmentation fault while loading plugin file: /usr/lib/gstreamer-0.10/libgstvideoscale.so Please either: - remove it and restart. - run with --gst-disable-segtrap --gst-disable-registry-fork and debug. Detaching after fork from child process 2734. *** glibc detected *** /usr/libexec/gstreamer-0.10/gst-plugin-scanner: free(): invalid next size (normal): 0x08087350 *** The only way I can get thinks go end here is to kill the process with a Control+C.
This is a puzzler. Can you try the glibc build at: http://koji.fedoraproject.org/koji/buildinfo?buildID=271198
(In reply to comment #3) > This is a puzzler. > > Can you try the glibc build at: > http://koji.fedoraproject.org/koji/buildinfo?buildID=271198 I tried the packages on that page that were already installed on my box. (i.e. I only installed the packages of the older version that were previously installed.) Short version: same issues. Fails with same error and both pidgin and xfce4-mixer hang in gdb. Long version: (gdb) file /usr/bin/xfce4-mixer Reading symbols from /usr/bin/xfce4-mixer...Reading symbols from /usr/lib/debug/usr/bin/xfce4-mixer.debug...done. done. (gdb) run Starting program: /usr/bin/xfce4-mixer [Thread debugging using libthread_db enabled] Detaching after fork from child process 1679. ERROR: Caught a segmentation fault while loading plugin file: /usr/lib/gstreamer-0.10/libgstvideoscale.so Please either: - remove it and restart. - run with --gst-disable-segtrap --gst-disable-registry-fork and debug. Detaching after fork from child process 1680. (gdb) file /usr/bin/pidgin Reading symbols from /usr/bin/pidgin...Reading symbols from /usr/lib/debug/usr/bin/pidgin.debug...done. done. (gdb) run Starting program: /usr/bin/pidgin [Thread debugging using libthread_db enabled] *** glibc detected *** /usr/bin/pidgin: free(): invalid next size (normal): 0x081d3058 *** I did a yum localinstall on the packages, here's the results: rpm -qa | grep glibc glibc-debuginfo-2.14.1-2.i686 glibc-debuginfo-common-2.14.1-2.i686 glibc-2.14.1-2.i686 glibc-common-2.14.1-2.i686
Okay, a few more details. I have isolated which packages which seem to impact pidgin on my box. gstreamer-plugins-bad-free i686 0.10.22-1.fc15 updates 1.2 M gstreamer-plugins-base i686 0.10.33-1.fc15 updates 1.0 M gstreamer-plugins-good i686 0.10.29-1.fc15 updates 1.4 M Installing these updates here breaks pidgin. Downgrade and pidgin is happy again. So, for pidgin to work I am running: gstreamer-0.10.34-1.fc15.i686 gstreamer-plugins-good-0.10.27-4.fc15.i686 gstreamer-plugins-base-0.10.32-2.fc15.i686 gstreamer-python-0.10.19-2.fc15.i686 gstreamer-tools-0.10.34-1.fc15.i686 gstreamer-plugins-bad-free-0.10.21-4.fc15.i686 For the xfce4-mixer, I downgraded every package possible for Fedora 15. Then I did a: yum --exclude=glib* --exclude=xfce4* --exclude=gstreamer* update The sad news is: the xfce4-mixer was still broken. Enabling the xfce4 updates and doing it again got the applet back in the tray but xfce4-mixer still gave an error.
ok, can you try: http://koji.fedoraproject.org/koji/taskinfo?taskID=3560363 (once it's done building) download it and do a 'yum reinstall' of xfce4-mixer. See if that one works.
(In reply to comment #6) > ok, can you try: > > http://koji.fedoraproject.org/koji/taskinfo?taskID=3560363 > (once it's done building) > > download it and do a 'yum reinstall' of xfce4-mixer. See if that one works. I downloaded xfce4-mixer and the related debuginfo. I rebooted (just to make sure we have a clean drawing board) and ran the xfce4-mixer command. I get the following: gdb GNU gdb (GDB) Fedora (7.3.1-46.fc15) Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. (gdb) file /usr/bin/xfce4-mixer Reading symbols from /usr/bin/xfce4-mixer...Reading symbols from /usr/lib/debug/usr/bin/xfce4-mixer.debug...done. done. (gdb) run Starting program: /usr/bin/xfce4-mixer [Thread debugging using libthread_db enabled] *** glibc detected *** /usr/bin/xfce4-mixer: free(): invalid next size (normal): 0x08164f20 *** At this point it hangs and I have no choice but to do a Control+C. (If I haven't said it yet, Thanks Kevin for all of your help)
So, the oddness shot up a bit. I installed the gnome desktop environment on my system and noticed that the xfce4-mixer is working again. (I still had to make sure gstreamer-plugins* are downgraded). Here's the section of my yum.log: Dec 08 19:34:56 Installed: libreport-2.0.4-4.fc15.i686 Dec 08 19:34:58 Installed: x264-libs-0.0.0-0.30.20110620.fc15.i686 Dec 08 19:34:58 Installed: avahi-ui-gtk3-0.6.30-3.fc15.i686 Dec 08 19:34:59 Installed: libpeas-1.0.0-1.fc15.i686 Dec 08 19:34:59 Installed: lame-libs-3.98.4-1.fc14.i686 Dec 08 19:35:00 Installed: telepathy-glib-0.14.10-1.fc15.i686 Dec 08 19:35:01 Installed: xmlrpc-c-client-1.25.4-1500.svn2077.fc15.i686 Dec 08 19:35:01 Installed: abrt-libs-2.0.3-6.fc15.i686 Dec 08 19:35:02 Installed: libmpeg2-0.5.1-8.fc12.i686 Dec 08 19:35:02 Installed: librtmp-2.4-0.1.20110811gitc58cfb3e.fc15.i686 Dec 08 19:35:03 Installed: a52dec-0.7.4-15.fc11.i586 Dec 08 19:35:03 Installed: celt051-0.5.1.3-3.fc15.i686 Dec 08 19:35:04 Installed: xvidcore-1.3.2-2.fc15.i686 Dec 08 19:35:05 Installed: spice-glib-0.5-6.fc15.i686 Dec 08 19:35:05 Installed: mplayer-common-1.0-0.125.20110816svn.fc15.i686 Dec 08 19:35:06 Installed: gnome-disk-utility-ui-libs-3.0.0-2.fc15.i686 Dec 08 19:35:07 Installed: 1:js-1.8.5-6.fc15.i686 Dec 08 19:35:07 Installed: twolame-libs-0.3.12-4.fc11.i586 Dec 08 19:35:08 Installed: libwnck3-3.0.0-1.fc15.i686 Dec 08 19:35:09 Installed: festival-speechtools-libs-1.2.96-18.fc15.i686 Dec 08 19:35:10 Installed: at-spi-1.32.0-5.fc15.i686 Dec 08 19:35:11 Installed: 1:faad2-libs-2.7-1.fc11.i586 Dec 08 19:35:11 Installed: gvnc-0.4.3-1.fc15.i686 Dec 08 19:35:12 Installed: libdca-0.0.5-5.fc12.i686 Dec 08 19:35:16 Installed: libgweather-3.0.0-1.fc15.i686 Dec 08 19:35:16 Installed: unique3-3.0.0-1.fc15.i686 Dec 08 19:35:17 Installed: libbluray-0.2-0.3.20110126gitbbf11e43bd82e.fc15.i686 Dec 08 19:35:17 Installed: live555-0-0.30.2011.01.24.fc15.i686 Dec 08 19:35:18 Installed: btparser-0.13-1.fc15.i686 Dec 08 19:35:20 Installed: abrt-2.0.3-6.fc15.i686 Dec 08 19:35:21 Installed: vte3-0.28.1-1.fc15.i686 Dec 08 19:35:21 Installed: exiv2-libs-0.21.1-3.fc15.i686 Dec 08 19:35:22 Installed: exempi-2.1.1-2.fc15.i686 Dec 08 19:35:22 Installed: at-spi-python-1.32.0-5.fc15.i686 Dec 08 19:35:23 Installed: spice-gtk3-0.5-6.fc15.i686 Dec 08 19:35:23 Installed: python-GnuPGInterface-0.3.2-8.fc15.noarch Dec 08 19:35:24 Installed: python-httplib2-0.6.0-5.fc15.noarch Dec 08 19:35:32 Installed: gnome-user-docs-3.0.4-1.fc15.noarch Dec 08 19:35:33 Installed: python-xlib-0.15-0.5.rc1.fc15.noarch Dec 08 19:35:33 Installed: pyatspi-2.0.1-1.fc15.noarch Dec 08 19:35:34 Installed: 1:python-BeautifulSoup-3.2.0-2.fc15.noarch Dec 08 19:35:34 Installed: gnome-session-xsession-3.0.1-2.fc15.i686 Dec 08 19:35:34 Installed: telepathy-filesystem-0.0.2-2.fc15.noarch Dec 08 19:35:37 Installed: dvb-apps-1.1.2-0.d4e8bf5658ce.fc15.i686 Dec 08 19:35:38 Installed: python-cloudfiles-1.7.9.1-1.fc15.noarch Dec 08 19:35:38 Installed: hplip-common-3.11.10-5.fc15.i686 Dec 08 19:35:41 Installed: python-boto-2.0-1.fc15.noarch Dec 08 19:35:43 Installed: yelp-xsl-3.0.2-1.fc15.noarch Dec 08 19:35:43 Installed: 1:yelp-libs-3.0.4-1.fc15.i686 Dec 08 19:35:45 Installed: 1:yelp-3.0.4-1.fc15.i686 Dec 08 19:35:45 Installed: nautilus-extensions-3.0.2-1.fc15.i686 Dec 08 19:35:48 Installed: nautilus-3.0.2-1.fc15.i686 Dec 08 19:35:49 Installed: telepathy-logger-0.2.8-1.fc15.i686 Dec 08 19:35:50 Installed: libgexiv2-0.2.2-2.fc15.i686 Dec 08 19:35:50 Installed: abrt-addon-python-2.0.3-6.fc15.i686 Dec 08 19:35:50 Installed: abrt-plugin-bugzilla-2.0.3-6.fc15.i686 Dec 08 19:35:52 Installed: abrt-addon-kerneloops-2.0.3-6.fc15.i686 Dec 08 19:35:52 Installed: abrt-plugin-logger-2.0.3-6.fc15.i686 Dec 08 19:35:53 Installed: gnome-disk-utility-3.0.0-2.fc15.i686 Dec 08 19:35:54 Installed: gtk-vnc2-0.4.3-1.fc15.i686 Dec 08 19:35:55 Installed: gnome-mag-0.16.2-2.fc15.i686 Dec 08 19:35:55 Installed: festival-lib-1.96-18.fc15.i686 Dec 08 19:35:56 Installed: festvox-slt-arctic-hts-0.20061229-18.fc15.noarch Dec 08 19:35:58 Installed: festival-1.96-18.fc15.i686 Dec 08 19:35:59 Installed: gnome-speech-0.4.25-5.fc15.i686 Dec 08 19:36:00 Installed: gjs-0.7.14-6.fc15.i686 Dec 08 19:36:00 Installed: libreport-gtk-2.0.4-4.fc15.i686 Dec 08 19:36:01 Installed: abrt-gui-2.0.3-6.fc15.i686 Dec 08 19:36:02 Installed: aalib-libs-1.4.0-0.19.rc5.fc15.i686 Dec 08 19:36:02 Installed: openconnect-3.12-1.fc15.i686 Dec 08 19:36:03 Installed: portaudio-19-12.fc15.i686 Dec 08 19:36:04 Installed: espeak-1.45.05-3.fc15.i686 Dec 08 19:36:05 Installed: icedax-1.1.11-8.fc15.i686 Dec 08 19:36:06 Installed: gstreamer-rtsp-0.10.8-1.fc15.i686 Dec 08 19:36:08 Installed: gnome-dvb-daemon-0.2.1-1.fc15.i686 Dec 08 19:36:09 Installed: gtksourceview3-3.0.5-1.fc15.i686 Dec 08 19:36:10 Installed: libva-1.0.14-1.fc15.i686 Dec 08 19:36:11 Installed: ffmpeg-libs-0.7.6-1.fc15.i686 Dec 08 19:36:12 Installed: mencoder-1.0-0.125.20110816svn.fc15.i686 Dec 08 19:36:12 Installed: libbeagle-0.3.9-7.fc15.i686 Dec 08 19:36:13 Installed: cdrdao-1.2.3-9.fc15.i686 Dec 08 19:36:14 Installed: pyclutter-1.3.2-2.fc15.i686 Dec 08 19:36:14 Installed: dvd+rw-tools-7.1-5.fc14.i686 Dec 08 19:36:15 Installed: gnome-panel-libs-3.0.0.1-4.fc15.i686 Dec 08 19:36:17 Installed: flite-1.3-16.fc15.i686 Dec 08 19:36:18 Installed: libvdpau-0.4.1-4.fc15.i686 Dec 08 19:36:18 Installed: 1:gnome-utils-libs-3.0.0-1.fc15.i686 Dec 08 19:36:19 Installed: fuse-libs-2.8.6-1.fc15.i686 Dec 08 19:36:19 Installed: gvfs-fuse-1.8.2-1.fc15.i686 Dec 08 19:36:20 Installed: libspectre-0.2.6-4.fc15.i686 Dec 08 19:36:21 Installed: evince-libs-3.0.2-1.fc15.i686 Dec 08 19:36:28 Installed: evince-3.0.2-1.fc15.i686 Dec 08 19:36:29 Installed: file-roller-3.0.2-1.fc15.i686 Dec 08 19:36:30 Installed: libcaca-0.99-0.11.beta17.fc15.i686 Dec 08 19:36:31 Installed: librsync-0.9.7-16.fc15.i686 Dec 08 19:36:32 Installed: gtkmm30-3.0.1-1.fc15.i686 Dec 08 19:36:32 Installed: wodim-1.1.11-8.fc15.i686 Dec 08 19:36:33 Installed: gnome-python2-libwnck-2.32.0-4.fc15.i686 Dec 08 19:36:33 Installed: dotconf-1.3-2.fc15.i686 Dec 08 19:36:34 Installed: libmusicbrainz3-3.0.3-3.fc15.i686 Dec 08 19:36:35 Installed: 1:net-snmp-libs-5.6.1-7.fc15.i686 Dec 08 19:36:36 Installed: hplip-libs-3.11.10-5.fc15.i686 Dec 08 19:36:37 Installed: mutter-3.0.2.1-1.fc15.i686 Dec 08 19:36:38 Installed: opencore-amr-0.1.2-1.fc12.i686 Dec 08 19:36:39 Installed: libid3tag-0.15.1b-11.fc15.i686 Dec 08 19:36:40 Installed: gnupg-1.4.11-3.fc15.i686 Dec 08 19:36:40 Installed: elfutils-0.152-1.fc15.i686 Dec 08 19:36:41 Installed: abrt-addon-ccpp-2.0.3-6.fc15.i686 Dec 08 19:36:42 Installed: avahi-gobject-0.6.30-3.fc15.i686 Dec 08 19:36:42 Installed: 2:ncftp-3.2.5-2.fc15.i686 Dec 08 19:36:44 Installed: duplicity-0.6.14-1.fc15.i686 Dec 08 19:36:44 Installed: lirc-libs-0.9.0-7.fc15.i686 Dec 08 19:36:45 Installed: mplayer-1.0-0.125.20110816svn.fc15.i686 Dec 08 19:36:46 Installed: gnome-mplayer-common-1.0.4-2.fc15.i686 Dec 08 19:36:46 Installed: quvi-0.2.16.3-1.fc15.i686 Dec 08 19:36:47 Installed: gmime-2.5.1-4.fc15.i686 Dec 08 19:36:48 Installed: totem-pl-parser-2.32.4-1.fc15.i686 Dec 08 19:36:49 Installed: brasero-libs-3.0.0-2.fc15.i686 Dec 08 19:36:52 Installed: brasero-3.0.0-2.fc15.i686 Dec 08 19:36:56 Installed: 1:totem-3.0.1-2.fc15.i686 Dec 08 19:36:56 Installed: libmad-0.15.1b-13.fc12.i586 Dec 08 19:36:59 Installed: sox-14.3.2-1.fc15.i686 Dec 08 19:37:01 Installed: festival-freebsoft-utils-0.10-2.fc15.noarch Dec 08 19:37:02 Installed: speech-dispatcher-0.7.1-5.fc15.i686 Dec 08 19:37:02 Installed: pulseaudio-utils-0.9.22-5.fc15.i686 Dec 08 19:37:03 Installed: libsidplay-1.36.60-2.fc15.i686 Dec 08 19:37:04 Installed: libgdata-0.8.1-1.fc15.i686 Dec 08 19:37:06 Installed: evolution-data-server-3.0.3.1-1.fc15.i686 Dec 08 19:37:08 Installed: gnome-shell-3.0.2-6.fc15.i686 Dec 08 19:37:08 Installed: python-virtkey-0.50-9.fc15.i686 Dec 08 19:37:09 Installed: caribou-0.2.00-3.fc15.noarch Dec 08 19:37:14 Installed: orca-3.0.1-1.fc15.i686 Dec 08 19:37:14 Installed: abrt-desktop-2.0.3-6.fc15.i686 Dec 08 19:37:15 Installed: gnome-icon-theme-extras-3.0.0-2.fc15.noarch Dec 08 19:37:16 Installed: gnome-backgrounds-3.0.1-1.fc15.noarch Dec 08 19:37:19 Installed: gnome-panel-3.0.0.1-4.fc15.i686 Dec 08 19:37:22 Installed: 1:nautilus-sendto-3.0.0-1.fc15.i686 Dec 08 19:37:23 Installed: gstreamer-plugins-ugly-0.10.18-1.fc15.1.i686 Dec 08 19:37:23 Installed: pulseaudio-module-x11-0.9.22-5.fc15.i686 Dec 08 19:37:29 Installed: shotwell-0.10.1-1.fc15.i686 Dec 08 19:37:30 Installed: brasero-nautilus-3.0.0-2.fc15.i686 Dec 08 19:37:30 Installed: gnome-mplayer-1.0.4-2.fc15.i686 Dec 08 19:37:32 Installed: deja-dup-18.2.1-1.fc15.i686 Dec 08 19:37:35 Installed: vinagre-3.0.1-3.fc15.i686 Dec 08 19:37:35 Installed: libsane-hpaio-3.11.10-5.fc15.i686 Dec 08 19:37:37 Installed: gnome-system-monitor-3.0.0-1.fc15.i686 Dec 08 19:37:38 Installed: file-roller-nautilus-3.0.2-1.fc15.i686 Dec 08 19:37:38 Installed: evince-nautilus-3.0.2-1.fc15.i686 Dec 08 19:37:42 Installed: 1:gnome-utils-3.0.0-1.fc15.i686 Dec 08 19:37:42 Installed: gstreamer-ffmpeg-0.10.11-2.fc15.i686 Dec 08 19:37:48 Installed: 2:gedit-3.0.6-1.fc15.i686 Dec 08 19:37:51 Installed: NetworkManager-openconnect-0.9.0-2.fc15.i686 Dec 08 19:37:52 Installed: gnome-disk-utility-nautilus-3.0.0-2.fc15.i686 Dec 08 19:37:53 Installed: simple-scan-2.32.0.2-1.fc15.i686 Dec 08 19:37:55 Installed: eog-3.0.1-1.fc15.i686 Dec 08 19:37:59 Installed: gnome-terminal-3.0.1-1.fc15.i686 Dec 08 19:38:00 Installed: vino-3.0.2-2.fc15.i686 Dec 08 19:38:01 Installed: PackageKit-command-not-found-0.6.17-1.fc15.i686 Dec 08 19:38:03 Installed: gucharmap-3.0.1-2.fc15.i686 Dec 08 19:38:05 Installed: mousetweaks-3.0.1-1.fc15.i686 Dec 08 19:38:05 Installed: PackageKit-gtk-module-0.6.17-1.fc15.i686 Dec 08 19:38:08 Installed: gcalctool-6.0.1-2.fc15.i686 Dec 08 19:38:09 Installed: 1:cheese-3.0.2-2.fc15.i686 Dec 08 19:38:10 Installed: gvfs-gphoto2-1.8.2-1.fc15.i686 Dec 08 19:38:10 Installed: pulseaudio-module-gconf-0.9.22-5.fc15.i686 Dec 08 19:38:11 Installed: gvfs-archive-1.8.2-1.fc15.i686 Dec 08 19:38:15 Installed: gnome-power-manager-3.0.2-2.fc15.i686 Dec 08 19:38:16 Installed: at-spi2-atk-2.0.1-1.fc15.i686 Dec 08 19:38:16 Installed: 1:gdm-plugin-fingerprint-3.0.4-1.fc15.i686 Dec 08 19:38:17 Installed: PackageKit-gtk3-module-0.6.17-1.fc15.i686 Dec 08 19:38:18 Installed: gnome-screensaver-3.0.1-1.fc15.i686 Dec 08 19:38:19 Installed: policycoreutils-restorecond-2.0.86-7.fc15.i686 Dec 08 19:38:19 Installed: gvfs-smb-1.8.2-1.fc15.i686
I cannot really say much useful right now, but what I can say is that I have a five character user name (chris), I am using F15 and xfce4-mixer and pidgin work fine. I'll look into the details later and compare the versions of packages.
I am pretty sure this is a duplicate of 759809 *** This bug has been marked as a duplicate of bug 759809 ***