This happens with HDSP cards. RME has a page on it. Their story is that some of the older HDSP cards require a voltage level that the PSU fails to provide during booting, and if that happens, the card is never visible to the BIOS. They have a h/w hack to work around it, but I think their recommendation is to get a better PSU. However ... this has happened to me with an HDSP card in a machine in which it had worked for years. I did a kernel upgrade, and after the reboot, the HDSP card was never seen again. I installed it in 3 other machines, and it was not visible there either. This happened years ago (perhaps 4?) and I never got the card working again; I also moved onto computing hardware with no physical space for a PCI card like this. On Fri, Nov 25, 2016 at 8:09 AM, Iain Mott &lt;mott(a)escuta.org <mailto:mott@escuta.org>> wrote: Hi folks, I have a problem - I'm mounting an exhibition and trying to install hdsp card with a multiface card. The machine I've been given and the only one available here has one PCI slot and several other more modern types. I've installed alsa-firmware and alsa-tools from source, bu the problem is that the card is not showing up with lspci and aplay -l, nor is it showing up cat /proc/asound/cards Any suggestions please? I've looked in the BIOS and the slot is enabled. There are no other PCI type cards installed. Thank you, Iain _______________________________________________ Linux-audio-user mailing list Linux-audio-user(a)lists.linuxaudio.org <mailto:Linux-audio-user@lists.linuxaudio.org> http://lists.linuxaudio.org/listinfo/linux-audio-user <http://lists.linuxaudio.org/listinfo/linux-audio-user>