Having Problem with Audio I/O when using Headless Firefox

What version of Ubuntu are you running? How did you install ALSA? <br> <br>On Ubuntu 14.04, after installing the package “alsa-base” I have it available. <br> <br><pre> <br># lsmod <br>Module Size Used by <br>snd_dummy 20483 0 <br>snd_pcm 102099 1 snd_dummy <br>snd_page_alloc 18710 1 snd_pcm <br>snd_timer 29482 1 snd_pcm <br>snd 69238 3 snd_dummy,snd_timer,snd_pcm <br>soundcore 12680 1 snd <br>ppdev 17671 0 <br>kvm_intel 143060 0 <br>vmwgfx 175358 0 <br>kvm 451511 1 kvm_intel <br>ttm 85115 1 vmwgfx <br>psmouse 102222 0 <br>serio_raw 13462 0 <br>drm 302817 2 ttm,vmwgfx <br>i2c_piix4 22155 0 <br>parport_pc 32701 1 <br>lp 17759 0 <br>mac_hid 13205 0 <br>parport 42348 3 lp,ppdev,parport_pc <br>floppy 69370 0 <br></pre>

I am getting <br>root@ubuntu-test:~# modprobe snd-seq-dummy <br>FATAL: Error inserting snd_seq_dummy (/lib/modules/3.5.0-48-generic/kernel/sound/core/seq/snd-seq-dummy.ko): Invalid argument <br>root@ubuntu-test:~# <br> <br>How do I fix this?

Hi <br> <br>I followed the website and got ALSA installed. <br> <br>snd-dummy is not available, but snd-seq-dummy is there. Is it the same? <br> <br>What should my next step be? <br> <br>root@ubuntu-test:~# modprobe -l | grep dummy <br>kernel/drivers/net/dummy.ko <br>kernel/sound/core/seq/snd-seq-dummy.ko <br>root@ubuntu-test:~# <br> <br>root@ubuntu-test:~# modprobe snd-dummy <br>FATAL: Module snd_dummy not found. <br>root@ubuntu-test:~# modprobe -l <br>kernel/arch/x86/kernel/cpu/mcheck/mce-xeon75xx.ko <br>kernel/arch/x86/kernel/cpu/mcheck/mce-inject.ko <br>kernel/arch/x86/kernel/msr.ko <br>kernel/arch/x86/kernel/cpuid.ko <br>kernel/arch/x86/kernel/microcode.ko <br>kernel/arch/x86/crypto/aes-x86_64.ko <br>kernel/arch/x86/crypto/camellia-x86_64.ko <br>kernel/arch/x86/crypto/blowfish-x86_64.ko <br>kernel/arch/x86/crypto/twofish-x86_64.ko <br>kernel/arch/x86/crypto/twofish-x86_64-3way.ko <br>kernel/arch/x86/crypto/salsa20-x86_64.ko <br>kernel/arch/x86/crypto/serpent-sse2-x86_64.ko <br>kernel/arch/x86/crypto/aesni-intel.ko <br>kernel/arch/x86/crypto/ghash-clmulni-intel.ko <br>kernel/arch/x86/crypto/sha1-ssse3.ko <br>kernel/arch/x86/kvm/kvm.ko <br>kernel/arch/x86/kvm/kvm-intel.ko <br>kernel/arch/x86/kvm/kvm-amd.ko <br>kernel/fs/nfs_common/nfs_acl.ko <br>kernel/fs/fat/msdos.ko <br>kernel/fs/nls/nls_iso8859-1.ko <br>kernel/fs/exofs/libore.ko <br>kernel/fs/binfmt_misc.ko <br>kernel/fs/configfs/configfs.ko <br>kernel/fs/fscache/fscache.ko <br>kernel/fs/ext2/ext2.ko <br>kernel/fs/squashfs/squashfs.ko <br>kernel/fs/isofs/isofs.ko <br>kernel/fs/nfs/nfs.ko <br>kernel/fs/nfs/nfs_layout_nfsv41_files.ko <br>kernel/fs/nfs/objlayout/objlayoutdriver.ko <br>kernel/fs/nfs/blocklayout/blocklayoutdriver.ko <br>kernel/fs/nfsd/nfsd.ko <br>kernel/fs/lockd/lockd.ko <br>kernel/fs/cifs/cifs.ko <br>kernel/fs/ufs/ufs.ko <br>kernel/fs/autofs4/autofs4.ko <br>kernel/fs/overlayfs/overlayfs.ko <br>kernel/fs/udf/udf.ko <br>kernel/fs/xfs/xfs.ko <br>kernel/fs/9p/9p.ko <br>kernel/fs/cachefiles/cachefiles.ko <br>kernel/fs/btrfs/btrfs.ko <br>kernel/fs/ceph/ceph.ko <br>kernel/crypto/seqiv.ko 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<br>kernel/drivers/char/hangcheck-timer.ko <br>kernel/drivers/block/floppy.ko <br>kernel/drivers/block/nbd.ko <br>kernel/drivers/block/cryptoloop.ko <br>kernel/drivers/block/rbd.ko <br>kernel/drivers/misc/vmw_balloon.ko <br>kernel/drivers/scsi/scsi_tgt.ko <br>kernel/drivers/scsi/raid_class.ko <br>kernel/drivers/scsi/scsi_transport_fc.ko <br>kernel/drivers/scsi/scsi_transport_iscsi.ko <br>kernel/drivers/scsi/scsi_transport_sas.ko <br>kernel/drivers/scsi/libsas/libsas.ko <br>kernel/drivers/scsi/device_handler/scsi_dh.ko <br>kernel/drivers/scsi/libiscsi.ko <br>kernel/drivers/scsi/libiscsi_tcp.ko <br>kernel/drivers/scsi/iscsi_tcp.ko <br>kernel/drivers/scsi/BusLogic.ko <br>kernel/drivers/scsi/qla1280.ko <br>kernel/drivers/scsi/vmw_pvscsi.ko <br>kernel/drivers/scsi/hv_storvsc.ko <br>kernel/drivers/scsi/osd/libosd.ko <br>kernel/drivers/scsi/osd/osd.ko <br>kernel/drivers/scsi/scsi_wait_scan.ko <br>kernel/drivers/ata/ahci.ko <br>kernel/drivers/ata/libahci.ko <br>kernel/drivers/ata/acard-ahci.ko 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<br>kernel/net/netfilter/xt_rateest.ko <br>kernel/net/netfilter/xt_realm.ko <br>kernel/net/netfilter/xt_recent.ko <br>kernel/net/netfilter/xt_sctp.ko <br>kernel/net/netfilter/xt_socket.ko <br>kernel/net/netfilter/xt_state.ko <br>kernel/net/netfilter/xt_statistic.ko <br>kernel/net/netfilter/xt_string.ko <br>kernel/net/netfilter/xt_tcpmss.ko <br>kernel/net/netfilter/xt_time.ko <br>kernel/net/netfilter/xt_u32.ko <br>kernel/net/netfilter/ipset/ip_set.ko <br>kernel/net/netfilter/ipset/ip_set_bitmap_ip.ko <br>kernel/net/netfilter/ipset/ip_set_bitmap_ipmac.ko <br>kernel/net/netfilter/ipset/ip_set_bitmap_port.ko <br>kernel/net/netfilter/ipset/ip_set_hash_ip.ko <br>kernel/net/netfilter/ipset/ip_set_hash_ipport.ko <br>kernel/net/netfilter/ipset/ip_set_hash_ipportip.ko <br>kernel/net/netfilter/ipset/ip_set_hash_ipportnet.ko <br>kernel/net/netfilter/ipset/ip_set_hash_net.ko <br>kernel/net/netfilter/ipset/ip_set_hash_netport.ko <br>kernel/net/netfilter/ipset/ip_set_hash_netiface.ko <br>kernel/net/netfilter/ipset/ip_set_list_set.ko <br>kernel/net/netfilter/ipvs/ip_vs.ko <br>kernel/net/netfilter/ipvs/ip_vs_rr.ko <br>kernel/net/netfilter/ipvs/ip_vs_wrr.ko <br>kernel/net/netfilter/ipvs/ip_vs_lc.ko <br>kernel/net/netfilter/ipvs/ip_vs_wlc.ko <br>kernel/net/netfilter/ipvs/ip_vs_lblc.ko <br>kernel/net/netfilter/ipvs/ip_vs_lblcr.ko <br>kernel/net/netfilter/ipvs/ip_vs_dh.ko <br>kernel/net/netfilter/ipvs/ip_vs_sh.ko <br>kernel/net/netfilter/ipvs/ip_vs_sed.ko <br>kernel/net/netfilter/ipvs/ip_vs_nq.ko <br>kernel/net/netfilter/ipvs/ip_vs_ftp.ko <br>kernel/net/netfilter/ipvs/ip_vs_pe_sip.ko <br>kernel/net/ipv4/netfilter/nf_conntrack_ipv4.ko <br>kernel/net/ipv4/netfilter/nf_nat.ko <br>kernel/net/ipv4/netfilter/nf_defrag_ipv4.ko <br>kernel/net/ipv4/netfilter/nf_nat_amanda.ko <br>kernel/net/ipv4/netfilter/nf_nat_ftp.ko <br>kernel/net/ipv4/netfilter/nf_nat_h323.ko <br>kernel/net/ipv4/netfilter/nf_nat_irc.ko <br>kernel/net/ipv4/netfilter/nf_nat_pptp.ko <br>kernel/net/ipv4/netfilter/nf_nat_sip.ko <br>kernel/net/ipv4/netfilter/nf_nat_snmp_basic.ko <br>kernel/net/ipv4/netfilter/nf_nat_tftp.ko <br>kernel/net/ipv4/netfilter/nf_nat_proto_dccp.ko <br>kernel/net/ipv4/netfilter/nf_nat_proto_gre.ko <br>kernel/net/ipv4/netfilter/nf_nat_proto_udplite.ko <br>kernel/net/ipv4/netfilter/nf_nat_proto_sctp.ko <br>kernel/net/ipv4/netfilter/ip_tables.ko <br>kernel/net/ipv4/netfilter/iptable_filter.ko <br>kernel/net/ipv4/netfilter/iptable_mangle.ko <br>kernel/net/ipv4/netfilter/iptable_nat.ko <br>kernel/net/ipv4/netfilter/iptable_raw.ko <br>kernel/net/ipv4/netfilter/iptable_security.ko <br>kernel/net/ipv4/netfilter/ipt_ah.ko <br>kernel/net/ipv4/netfilter/ipt_rpfilter.ko <br>kernel/net/ipv4/netfilter/ipt_CLUSTERIP.ko <br>kernel/net/ipv4/netfilter/ipt_ECN.ko <br>kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko <br>kernel/net/ipv4/netfilter/ipt_NETMAP.ko <br>kernel/net/ipv4/netfilter/ipt_REDIRECT.ko <br>kernel/net/ipv4/netfilter/ipt_REJECT.ko <br>kernel/net/ipv4/netfilter/ipt_ULOG.ko <br>kernel/net/ipv4/netfilter/arp_tables.ko <br>kernel/net/ipv4/netfilter/arpt_mangle.ko <br>kernel/net/ipv4/netfilter/arptable_filter.ko <br>kernel/net/ipv4/ipip.ko <br>kernel/net/ipv4/gre.ko <br>kernel/net/ipv4/ip_gre.ko <br>kernel/net/ipv4/ah4.ko <br>kernel/net/ipv4/esp4.ko <br>kernel/net/ipv4/ipcomp.ko <br>kernel/net/ipv4/xfrm4_tunnel.ko <br>kernel/net/ipv4/xfrm4_mode_beet.ko <br>kernel/net/ipv4/tunnel4.ko <br>kernel/net/ipv4/xfrm4_mode_transport.ko <br>kernel/net/ipv4/xfrm4_mode_tunnel.ko <br>kernel/net/ipv4/inet_diag.ko <br>kernel/net/ipv4/tcp_diag.ko <br>kernel/net/ipv4/udp_diag.ko <br>kernel/net/ipv4/tcp_probe.ko <br>kernel/net/ipv4/tcp_bic.ko <br>kernel/net/ipv4/tcp_westwood.ko <br>kernel/net/ipv4/tcp_highspeed.ko <br>kernel/net/ipv4/tcp_hybla.ko <br>kernel/net/ipv4/tcp_htcp.ko <br>kernel/net/ipv4/tcp_vegas.ko <br>kernel/net/ipv4/tcp_veno.ko <br>kernel/net/ipv4/tcp_scalable.ko <br>kernel/net/ipv4/tcp_lp.ko <br>kernel/net/ipv4/tcp_yeah.ko <br>kernel/net/ipv4/tcp_illinois.ko <br>kernel/net/xfrm/xfrm_algo.ko <br>kernel/net/xfrm/xfrm_user.ko <br>kernel/net/xfrm/xfrm_ipcomp.ko <br>kernel/net/ipv6/netfilter/ip6_tables.ko <br>kernel/net/ipv6/netfilter/ip6table_filter.ko <br>kernel/net/ipv6/netfilter/ip6table_mangle.ko <br>kernel/net/ipv6/netfilter/ip6table_raw.ko <br>kernel/net/ipv6/netfilter/ip6table_security.ko <br>kernel/net/ipv6/netfilter/nf_conntrack_ipv6.ko <br>kernel/net/ipv6/netfilter/nf_defrag_ipv6.ko <br>kernel/net/ipv6/netfilter/ip6t_ah.ko <br>kernel/net/ipv6/netfilter/ip6t_eui64.ko <br>kernel/net/ipv6/netfilter/ip6t_frag.ko <br>kernel/net/ipv6/netfilter/ip6t_ipv6header.ko <br>kernel/net/ipv6/netfilter/ip6t_mh.ko <br>kernel/net/ipv6/netfilter/ip6t_hbh.ko <br>kernel/net/ipv6/netfilter/ip6t_rpfilter.ko <br>kernel/net/ipv6/netfilter/ip6t_rt.ko <br>kernel/net/ipv6/netfilter/ip6t_REJECT.ko <br>kernel/net/ipv6/ah6.ko <br>kernel/net/ipv6/esp6.ko <br>kernel/net/ipv6/ipcomp6.ko <br>kernel/net/ipv6/xfrm6_tunnel.ko <br>kernel/net/ipv6/tunnel6.ko <br>kernel/net/ipv6/xfrm6_mode_transport.ko <br>kernel/net/ipv6/xfrm6_mode_tunnel.ko <br>kernel/net/ipv6/xfrm6_mode_ro.ko <br>kernel/net/ipv6/xfrm6_mode_beet.ko <br>kernel/net/ipv6/mip6.ko <br>kernel/net/ipv6/sit.ko <br>kernel/net/ipv6/ip6_tunnel.ko <br>kernel/net/8021q/8021q.ko <br>kernel/net/llc/llc.ko <br>kernel/net/llc/llc2.ko <br>kernel/net/key/af_key.ko <br>kernel/net/bridge/bridge.ko <br>kernel/net/bridge/netfilter/ebtables.ko <br>kernel/net/bridge/netfilter/ebtable_broute.ko <br>kernel/net/bridge/netfilter/ebtable_filter.ko <br>kernel/net/bridge/netfilter/ebtable_nat.ko <br>kernel/net/bridge/netfilter/ebt_802_3.ko <br>kernel/net/bridge/netfilter/ebt_among.ko <br>kernel/net/bridge/netfilter/ebt_arp.ko <br>kernel/net/bridge/netfilter/ebt_ip.ko <br>kernel/net/bridge/netfilter/ebt_ip6.ko <br>kernel/net/bridge/netfilter/ebt_limit.ko <br>kernel/net/bridge/netfilter/ebt_mark_m.ko <br>kernel/net/bridge/netfilter/ebt_pkttype.ko <br>kernel/net/bridge/netfilter/ebt_stp.ko <br>kernel/net/bridge/netfilter/ebt_vlan.ko <br>kernel/net/bridge/netfilter/ebt_arpreply.ko <br>kernel/net/bridge/netfilter/ebt_mark.ko <br>kernel/net/bridge/netfilter/ebt_dnat.ko <br>kernel/net/bridge/netfilter/ebt_redirect.ko <br>kernel/net/bridge/netfilter/ebt_snat.ko <br>kernel/net/bridge/netfilter/ebt_log.ko <br>kernel/net/bridge/netfilter/ebt_nflog.ko <br>kernel/net/ipx/ipx.ko <br>kernel/net/appletalk/appletalk.ko <br>kernel/net/wanrouter/wanrouter.ko <br>kernel/net/x25/x25.ko <br>kernel/net/lapb/lapb.ko <br>kernel/net/netrom/netrom.ko <br>kernel/net/rose/rose.ko <br>kernel/net/ax25/ax25.ko <br>kernel/net/can/can.ko <br>kernel/net/can/can-raw.ko <br>kernel/net/can/can-bcm.ko <br>kernel/net/can/can-gw.ko <br>kernel/net/irda/irda.ko <br>kernel/net/irda/irlan/irlan.ko <br>kernel/net/irda/irnet/irnet.ko <br>kernel/net/irda/ircomm/ircomm.ko <br>kernel/net/irda/ircomm/ircomm-tty.ko <br>kernel/net/sunrpc/sunrpc.ko <br>kernel/net/sunrpc/auth_gss/auth_rpcgss.ko <br>kernel/net/rxrpc/af-rxrpc.ko <br>kernel/net/rxrpc/rxkad.ko <br>kernel/net/atm/atm.ko <br>kernel/net/atm/clip.ko <br>kernel/net/atm/br2684.ko <br>kernel/net/atm/lec.ko <br>kernel/net/atm/mpoa.ko <br>kernel/net/atm/pppoatm.ko <br>kernel/net/decnet/netfilter/dn_rtmsg.ko <br>kernel/net/decnet/decnet.ko <br>kernel/net/phonet/phonet.ko <br>kernel/net/phonet/pn_pep.ko <br>kernel/net/dccp/dccp.ko <br>kernel/net/dccp/dccp_ipv4.ko <br>kernel/net/dccp/dccp_ipv6.ko <br>kernel/net/dccp/dccp_diag.ko <br>kernel/net/dccp/dccp_probe.ko <br>kernel/net/sctp/sctp.ko <br>kernel/net/sctp/sctp_probe.ko <br>kernel/net/tipc/tipc.ko <br>kernel/net/9p/9pnet.ko <br>kernel/net/9p/9pnet_virtio.ko <br>kernel/net/9p/9pnet_rdma.ko <br>kernel/net/ieee802154/ieee802154.ko <br>kernel/net/ieee802154/af_802154.ko <br>kernel/net/ieee802154/6lowpan.ko <br>kernel/net/ceph/libceph.ko <br>kernel/lib/xz/xz_dec_test.ko <br>kernel/lib/test-kstrtox.ko <br>kernel/lib/crc-ccitt.ko <br>kernel/lib/crc-itu-t.ko <br>kernel/lib/crc7.ko <br>kernel/lib/libcrc32c.ko <br>kernel/lib/crc8.ko <br>kernel/lib/zlib_deflate/zlib_deflate.ko <br>kernel/lib/reed_solomon/reed_solomon.ko <br>kernel/lib/bch.ko <br>kernel/lib/raid6/raid6_pq.ko <br>kernel/lib/ts_kmp.ko <br>kernel/lib/ts_bm.ko <br>kernel/lib/ts_fsm.ko <br>kernel/lib/cpu-notifier-error-inject.ko <br>kernel/lib/lru_cache.ko <br>kernel/lib/cordic.ko <br>updates/acore/seq/oss/snd-seq-oss.ko <br>updates/acore/oss/snd-pcm-oss.ko <br>updates/pci/hda/snd-hda-codec-atihdmi.ko <br>updates/pci/hda/snd-hda-codec-nvhdmi.ko <br>updates/pci/hda/snd-hda-codec-cmedia.ko <br>updates/pci/hda/snd-hda-codec-intelhdmi.ko <br>updates/pci/hda/snd-hda-codec-cirrus.ko <br>updates/pci/hda/snd-hda-codec.ko <br>updates/pci/hda/snd-hda-codec-analog.ko <br>updates/pci/hda/snd-hda-intel.ko <br>updates/pci/hda/snd-hda-codec-ca0110.ko <br>updates/pci/hda/snd-hda-codec-idt.ko <br>updates/pci/hda/snd-hda-codec-ca0132.ko <br>updates/pci/hda/snd-hda-codec-via.ko <br>updates/pci/hda/snd-hda-codec-conexant.ko <br>updates/pci/hda/snd-hda-codec-si3054.ko <br>updates/pci/hda/snd-hda-codec-hdmi.ko <br>updates/pci/hda/snd-hda-codec-realtek.ko <br>updates/acore/seq/snd-seq.ko <br>updates/acore/seq/snd-seq-midi-event.ko <br>updates/acore/seq/snd-seq-device.ko <br>updates/acore/snd-page-alloc.ko <br>updates/acore/snd-hwdep.ko <br>updates/acore/snd-timer.ko <br>updates/acore/oss/snd-mixer-oss.ko <br>updates/acore/snd-pcm.ko <br>updates/acore/snd.ko <br>initrd/vesafb.ko

ALSA provides a “dummy” driver: <br> <br>http://www.alsa-project.org/main/index.php/Matrix:Module-dummy <br> <br>You should be able to enable it with: <br> <br><pre> <br>modprobe snd-dummy <br></pre> <br> <br>