No sound in plasma 5

[joneall]

Sound was working fine. Then I rebooted and now there is none. The tests in System Settings give no sound. Kmix looks ok too. Sounds all at 95%.

Tried rebooting, same pb.

Setup seems to be same as in a 14.10 system where sound works. Except there is no VLC backend, only Phonon Gstrreamer. What happened to VLC? Do I care? (I know nothing about backends...)

[joneall]

Where are multimedia devices configured?

This is a configuration problem. I can log on as another user and all works fine. I tried checking files in .kde/share/config and found one that seemed suspicious, phonondevicesrc, but copying from one user to another did not help.

In System Settings > Multimedia > Audio playback > Music, I see I am using what is called "Built-in Audio Analog Stereo" when it works. For the less fortunate user, this is grayed-out. Where is all this defined? There is also a "High Definition Audio Controller DIgital Stereo (HDMI)" listed, but I cannot find any socket on the computer for such a thing.

For info
$ lspci
00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 10)
00:01.0 PCI bridge: Intel Corporation 82G33/G31/P35/P31 Express PCI Express Root Port (rev 10)
00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 01)
00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 (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)
01:00.0 VGA compatible controller: NVIDIA Corporation GT215 [GeForce GT 240] (rev a2)
01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1)
03:00.0 Ethernet controller: Qualcomm Atheros AR8131 Gigabit Ethernet (rev c0)

There is no sound output on the Nvidia video controller nor anywhere else except for the built-in. The least I can say is that I do not understand this.

[joneall]

Where is sound conifg? How to reset it?

My problems with sound seem to be a config problem. First, one user lost sound, but it remained for another. Yesterday morning, that user too had lost sound. I have deleted all amarok files in .kde/share/apps and .kde/share/config. I have purged and reinstalled amarok. All to no avail.

In any case, the pb is more fundamental. With 4.10, in System Settings > Multimedia > Audio and Video Settings, the sound test button works with both the "Built-in Audio Analog Stereo" and the "High Definition Audio Controller Digitat Stereo (HDMI)", tho frankly I cannot understand the latter, as there is no HDMI socket on anything but the graphics card. Neither works with 14.

If it is a config thing, I should be able to delete that and reinstall that, but I have no idea how. Can anyone tell me? It's frankly idiotic to reinstall a system because the sound does not work, altho I have already done that at least once. Sound is essential for me. (I have copied all my 1000+ CDs to MP3 and stored the CDs in the garage...)

Thanks for any available help.