No more audio output, Worked fine until I messed...

[mrdodo]

Hello SL users,

I hope someone can help me. I'm fairly new to Linux but they say the best way to learn is to get stuck in, so I did. I'll cut a long story short: I messed around with uninstalling and installing packages relating to ALSA and pulseaudio, and well, as the title says I've ended up in a sound-less dead end.

uname -r :

QUOTE

2.6.32-220.4.1.el6.x86_64

sudo lspci -v :

QUOTE

00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2) Subsystem: ASUSTeK Computer Inc. Device 829e Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 10 Memory at fe024000 (32-bit, non-prefetchable) [size=16K] Capabilities: [44] Power Management version 2 Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+ Capabilities: [6c] HyperTransport: MSI Mapping Enable- Fixed+ Kernel modules: snd-hda-intel

lsmod:

QUOTE

Module                  Size  Used by cryptd                  8006  0 aes_x86_64              7914  1 aes_generic            27609  1 aes_x86_64 fuse                  66285  0 autofs4                26888  3 sunrpc                243758  1 bnx2fc                120558  0 cnic                  53443  1 bnx2fc uio                    10974  1 cnic 8021q                  23575  0 garp                    7344  1 8021q stp                    2173  1 garp llc                    5642  2 garp,stp fcoe                  20748  0 libfcoe                39661  2 bnx2fc,fcoe libfc                105924  3 bnx2fc,fcoe,libfcoe scsi_transport_fc      52241  3 bnx2fc,fcoe,libfc scsi_tgt              12173  1 scsi_transport_fc ipt_REJECT              2383  2 nf_conntrack_ipv4      9506  2 nf_defrag_ipv4          1483  1 nf_conntrack_ipv4 iptable_filter          2793  1 ip_tables              17831  1 iptable_filter ip6t_REJECT            4628  2 nf_conntrack_ipv6      8748  2 nf_defrag_ipv6        12182  1 nf_conntrack_ipv6 xt_state                1492  4 nf_conntrack          79453  3 nf_conntrack_ipv4,nf_conntrack_ipv6,xt_state ip6table_filter        2889  1 ip6_tables            19458  1 ip6table_filter ipv6                  322029  32 cnic,ip6t_REJECT,nf_conntrack_ipv6,nf_defrag_ipv6 dm_mirror              14101  0 dm_region_hash        12170  1 dm_mirror dm_log                10122  2 dm_mirror,dm_region_hash uinput                  8216  0 ppdev                  8729  0 parport_pc            22978  0 parport                37265  2 ppdev,parport_pc nvidia              12123119  30 asus_atk0110          14504  0 microcode            112594  0 sg                    30124  0 arc4                    1475  2 ecb                    2209  2 rt73usb                23314  0 rt2500usb              18824  0 rt2x00usb              11047  2 rt73usb,rt2500usb rt2x00lib              30958  3 rt73usb,rt2500usb,rt2x00usb mac80211              150271  2 rt2x00usb,rt2x00lib cfg80211              140059  2 rt2x00lib,mac80211 rfkill                19735  2 cfg80211 gspca_sonixj          28480  0 gspca_main            25832  1 gspca_sonixj videodev              76310  1 gspca_main v4l2_compat_ioctl32    7110  1 videodev serio_raw              4818  0 soundcore              8086  0 i2c_nforce2            6904  0 i2c_core              31276  3 nvidia,videodev,i2c_nforce2 shpchp                33482  0 ext4                  364410  3 mbcache                8144  1 ext4 jbd2                  88738  1 ext4 sr_mod                16228  0 cdrom                  39803  1 sr_mod firewire_ohci          24933  0 firewire_core          51229  1 firewire_ohci crc_itu_t              1717  2 rt73usb,firewire_core sd_mod                39520  3 crc_t10dif              1541  1 sd_mod pata_amd              11964  0 forcedeth              55795  0 pata_acpi              3701  0 ata_generic            3837  0 sata_nv                23471  2 dm_mod                81596  11 dm_mirror,dm_log

and /etc/asound.conf :

QUOTE

@hooks [ {   func load   files [   "/etc/alsa/pulse-default.conf"   ]   errors false } ]

Another symptom I've noticed: in GNOME under System->Preferences->Sound->Hardware, nothing is listed, whereas an audio device was being listed this morning.

And something else: running alsaunmute returns:

QUOTE

/sbin/alsactl: init:1727: No soundcards found...

But I'm clueless as to what my next step should be? Any pointers welcome! Thank you.

[mrdodo]

I've decided to do a clean install from disk and try to learn about Linux properly before messing again.

I'm sure what I did could have been fixed, but I've made so many changes over the past 24 hours, including recompiling the kernel at some point, that I just can't be sure that I haven't left a ticking time-bomb somewhere.

As said, I should properly get down to learning about Linux properly before doing such things!

[AndrewSerk]

Hello mrdodo and welcome to Scientific Linux Forum,

No harm in installing to figure out how to brake things That is how many have learned Linux.

Have fun and keep hacking away!

[gigix]

I am no longer keeping track of the number of times I broke my linux boxes...

For that matter (breaking and learning), I would recommend using virtual machines and their snapshot ability.