To be frank, I believe the problem may be that the kernel possibly doesn't support that card any more. It
does date from the early 2000s, after all.
The Linux kernel nowadays is probably more than 90% nothing
but drivers, y'see.....and runs to more than 35 million lines of code. As the years have passed, it's attempted to cover more and more newer hardware as it's been released, and there comes a point where, for the sake of not becoming too unwieldy, it's begun to drop driver support for older items.
And the Pentium 4 in that E510, well; I know Linux is good for keeping elderly hardware alive (I run a 16-yr old Dell lappie with a P4 myself), but they're really at the bottom end for daily usage. They only have SSE2s (although yours does have SSE3s, too, since it was one of the later ones - plus 64-bit capability).....the absolute lower limit for running modern software, which is becoming ever more demanding (especially browsers). The problem being that the architecture is ancient by today's standards.....and they throw off enough heat to give a fair impression of a hot air paint stripper.
I don't think you'll be able to find a stand-alone Linux driver for a sound card that old. The only real solution would be to track down the source code for same, and compile it yourself. And that's not a task I would recommend to a beginner.
Mike.
