I have an old PC with Ubuntu 5.10 installed on it: it works well, though it is rather slow.
Last night, I plugged in a soundcard based on the CMI8738 chipset. After power-on, it was detected normally (reported by lspci), and the correct modules were loaded (reported by modprobe, and comparing with the CMI page on alsa-project.org). However, I do not get sound: no sound effects, nothing from rhythmbox. When I try to adjust the volume levels using the gnome mixer application, they always spring back up to full volume. alsamixer from the command line also refused to change the levels. 1. Any suggestions? It is not clear to me how various things work together (or not) in linux to make sound work. There seem to be too many layers and alternatives: alsa, oss, esd, jack? 2. Can someone suggest a (preferably online) reference that describes how these things work together 3. What settings and/or files can I tweak? I did notice from /proc/interrupts that interrupt 11 is shared between the soundcard and the PCI-based USB card, and the number of interrupt events for interrupt 11 is zero. This suggests some sort of conflict between the sound card and the USB card at the interrupt level. 4. I thought that PCI was meant to have solved interrupt sharing? I have the BIOS set to non-PnP operating system, with resources allocated automatically. 5. Do I need to change this? 6. Any other suggestions? Stephen ======================================================================= This email, including any attachments, is only for the intended addressee. It is subject to copyright, is confidential and may be the subject of legal or other privilege, none of which is waived or lost by reason of this transmission. If the receiver is not the intended addressee, please accept our apologies, notify us by return, delete all copies and perform no other act on the email. Unfortunately, we cannot warrant that the email has not been altered or corrupted during transmission. =======================================================================
