No sound anymore....

[Frank616]

14.04 installed on my aging Core 2 Duo. Sound has always been an issue on this unit. The sound out connector on the motherboard has not worked for as long as I can remember. I've been using the headphone output, and connecting my Logitech speakers to that. However, now with 14.04, I get nothing at all. I think I had sound at first, but since I tried installing the nVidia driver, then went back to the Nouveau driver, I have no sound anywhere. Kubuntu does not seem to see a video card at all. See attached screenshot. However, lspci shows it.

frank@office:~$ lspci
00:00.0 Host bridge: Intel Corporation 82975X Memory Controller Hub (rev c0)
00:01.0 PCI bridge: Intel Corporation 82975X PCI Express Root Port (rev c0)
00:03.0 PCI bridge: Intel Corporation 82975X/3010 PCI Express Root Port (rev c0)
[HL][B]00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)[/B][/HL]
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 01)
00:1c.4 PCI bridge: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 5 (rev 01)
00:1c.5 PCI bridge: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 6 (rev 01)
00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 01)
00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 01)
00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 01)
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 01)
00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
00:1f.2 IDE interface: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] (rev 01)
00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 01)
05:00.0 VGA compatible controller: NVIDIA Corporation G98 [GeForce 8400 GS Rev. 2] (rev a1)
19:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5752 Gigabit Ethernet PCI Express (rev 02)
21:09.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22A IEEE-1394a-2000 Controller (PHY/Link) [iOHCI-Lynx]
frank@office:~$

Suggestions?

Frank.

[Snowhog]

What Backend is being used?

[Frank616]

Snowhog:

[Snowhog]

Try installing the VLC backend: phonon-backend-vlc and then setting it as the preferred backend for everything.

[Frank616]

Done. No change. Next?

Edit:

Decided to poke around myself. I installed pavucontrol. I added one more screenshot. Seems Kubuntu is not finding my sound card at all. Not sure what to do about that.

Frank.

[Frank616]

Problem?

https://bugs.launchpad.net/ubuntu/+s...r/+bug/1071001

Solution?

http://philipp.cuntz.org/2012/11/arc...und-intel.html

Just add those two lines to the end of whatever /etc/modprobe.d/blacklist.conf file you may already have, and reboot. Done.

Sound now works.

Google is my friend.

Frank.

Edit:

PS - I now get sound out of the rear audio ports on the motherboard as well. I find overall sound levels lower than what I had before, but I may play around with that and see if it can be improved. I also get no opening 'KDE sound' when booting. I see an old entry in the blacklist file that may have to do with that, however, so I may try commenting that out to see what happens.

-FB