new build: no sound and now no network

pickarooney

I built a new machine today and installed my existing hard drives. The machine booted up into Ubuntu no problem but I have no audio output. I've checked the cables and all seems fine. In the sound manager I can see the onboard sound card and all seems fine, volume is maxed on everything.

I decided to test with a PCI sound card and not only did it still not produce any sound but since I restarted I have no longer got a network connection.

The network card has now set itself to eth1 and not eth0 but I can't figure out any way to get it to connect either with a fixed IP or DHCP.

I'm pretty sure I didn't accidentally knock off anything on the motherboard when adding the PCI card. I since removed it but still no network.

Aaargh!

pickarooney

Balls! no sound or network on a liveCD either. This looks really bad

Capt'n Midnight

maybe if you said what hardware you have we could suggest drivers

cat /etc/udev/rules.d/70-persistent-net.rules

lspci

lshw -c network

iwconfig (on the off chance it picked up a wifi adaptor )


you could also try (cba checking if it uses the same lookup info )

sudo apt-get install hwinfo
hwinfo --network



in the windows world some devices on the M/B aren't recognised until you have all the chipset drivers loaded - not sure if this applies here

Johnboy1951

pickarooney wrote: »

Balls! no sound or network on a liveCD either. This looks really bad

Check the BIOS ....... they may be disabled.

pickarooney

I went through the BIOS with a fine tooth comb. Mobo was a bog-standard gigabyte with onboard audio (also tested with PCI sound card). I have literally never seen a network card that wasn't recognised out of the box by linux, and this one did actually work for an hour or so.

niallb

rm /etc/udev/rules.d/70-persistent-net.rules and reboot.
Your machine is set up to see the card that was in the old machine as eth0.
They're marked here as persistent to avoid driver changes swapping interfaces on you between kernels.
As this is a new machine, it must be removed before you reboot.
This is just down to it being a drive that was configured elsewhere.

It's likely the PCI soundcard didn't actually change anything, and you're just experiencing a coincidence.

Try removing the persistent net file and reboot, and then concentrate on the audio.
What is the sound chipset? Sometimes a card can seem to be detected correctly,
but is actually a similar card that is routing the audio differently.
Any chance you've got a front audio output enabled? Depending on the motherboard,
there are sometimes jumpers which guide the sound to the front or rear.
The manual should mention this if it is the case. I have one for which this is true.
Try plugging in to all the outputs - also don't leave out plugging the speakers into your phone or mp3 player
to make sure the problem isn't at that end.

pickarooney

niallb wrote: »

rm /etc/udev/rules.d/70-persistent-net.rules and reboot.
Your machine is set up to see the card that was in the old machine as eth0.
They're marked here as persistent to avoid driver changes swapping interfaces on you between kernels.
As this is a new machine, it must be removed before you reboot.
This is just down to it being a drive that was configured elsewhere.

It's likely the PCI soundcard didn't actually change anything, and you're just experiencing a coincidence.

Try removing the persistent net file and reboot, and then concentrate on the audio.
What is the sound chipset? Sometimes a card can seem to be detected correctly,
but is actually a similar card that is routing the audio differently.
Any chance you've got a front audio output enabled? Depending on the motherboard,
there are sometimes jumpers which guide the sound to the front or rear.
The manual should mention this if it is the case. I have one for which this is true.
Try plugging in to all the outputs - also don't leave out plugging the speakers into your phone or mp3 player
to make sure the problem isn't at that end.

I can understand that with the hard drive from the old machine there would be config files in place which would nto match with the new hardware, but I don't understand how this would result in there being no network card enabled on the liveCD, unless the liveCD actually reads something from the hard drive before loading the network drivers?

I should have the mobo back tomorrow either way. If they tell me it's tested OK for them then I'll have to take another look at the way ubuntu is detecting the ethernet port and sound cards in installed and liveCD modes.