[ubuntu] How to debug: Firefox "Failed to open VDPAU backend libvdpau_nouveau.so"

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http://ubuntuforums.org – $ uname -m x86_64 $ lsb_release -c Codename: saucy Firefox crashes The xterminal it was opened in says: Code: Failed to open VDPAU backend libvdpau_nouveau.so: cannot open shared object file:  No such file or directory  NOTE: child process received `Goodbye', closing down  [1]+  Done  firefox $ dmesg REPORTS: Code: [33739.540311] nouveau E[  PGRAPH][0000:01:00.0] DATA_ERROR INVALID_VALUE [33739.540320] nouveau E[  PGRAPH][0000:01:00.0]  DATA_ERROR [33739.540326] nouveau E[  PGRAPH][0000:01:00.0] ch 6 [0x003f7d8000 totem[5847]] s (Hardware)