$ rpm -qf /usr/lib/gstreamer-0.10/libgstasf.so gst-plugins-ugly-0.10.15-alt1 $ After apt-get installing gst-plugins-ugly from Sisyphus in a system which originally was a Desktop 4.1, there are unresolved symbols: $ cheese Xlib: extension "Generic Event Extension" missing on display ":0.0". Xlib: extension "Generic Event Extension" missing on display ":0.0". Xlib: extension "Generic Event Extension" missing on display ":0.0". Xlib: extension "Generic Event Extension" missing on display ":0.0". Xlib: extension "Generic Event Extension" missing on display ":0.0". Xlib: extension "Generic Event Extension" missing on display ":0.0". (cheese:1316): GStreamer-WARNING **: Failed to load plugin '/usr/lib/gstreamer-0.10/libgstlame.so': /usr/lib/gstreamer-0.10/libgstlame.so: undefined symbol: lame_set_VBR_quality (cheese:1316): GStreamer-WARNING **: Failed to load plugin '/usr/lib/gstreamer-0.10/libgstasf.so': /usr/lib/gstreamer-0.10/libgstasf.so: undefined symbol: gst_byte_reader_skip_string_utf16 cheese: symbol lookup error: /lib/libgudev-1.0.so.0: undefined symbol: udev_monitor_filter_add_match_subsystem_devtype $ More info on the versions of the relevant packages: $ rpm -qa '*gst*' libgstreamer-0.10.23-alt1 gst-plugins-base-0.10.23-alt1 gst-plugins-bad-0.10.13-alt2 gst-ffmpeg-0.10.8-alt1 gstreamer-0.10.23-alt1 gst-plugins-ugly-0.10.15-alt1 gst-plugins-good-0.10.15-alt4 libgst-plugins-0.10.23-alt1 $
apt-get dist-upgrade