In the Gentoo Linux ALSA Guide it is suggested that one can use the --buildpkg option when emerging alsa-driver for the first time, and --usepkg at subsequent occasions (when booting a newly built kernel). This does not work for me. If I try [ boot a newly built kernel ] unmerge alsa-driver emerge --usepkg alsa-driver reboot then the boot-up screen will say "modprobe: Can't locate module: snd-es18xx" (my on-board sound device is ES1869). If however I leave out the --usepkg option the alsa-driver is recompiled from sources, and the subsequent reboot is successful. All in all the Gentoo ALSA guide is a great help, BTW. I have done ALSA configuration some times in the past on Red Hat boxes, using the official ALSA-HOWTO, and it was quite a bit more cumbersome as I remember it.
Have you changed your kernel sources after you've built the alsa-driver package?
No, I was using the same kernel sources. The steps I did were cd /usr/src/linux make clean; make mrproper; make clean cp {the-previous-config} .config make menuconfig {edit Makefile to set a new EXTRAVERSION} make dep make bzImage make modules modules_install cp arch/i386/boot/bzImage /boot/kernel-... cp .config /boot/config-... {create a new entry in grub.conf} {reboot} As expected this gave me a new kernel with non-functional ALSA sound. At this point `emerge unmerge alsa-driver; emerge --usepkg alsa-driver' did not work for me; the emerge completed nicely but after another reboot the ALSA sound would still not be functional. Doing `emerge unmerge alsa-driver; emerge alsa-driver' and yet another reboot cured the problem.
>{edit Makefile to set a new EXTRAVERSION} I assume that this causes your problem. The alsa-modules are installed in /lib/modules/${kernel-version}-EXTRAVERSION. Your built package installs the modules in ${kernel-version}-OLD-EXTRAVERSION. If you run 'emerge alsa-driver' the modules are placed in the correct ${kernel-version}-NEW-EXTRAVERSION directory.
I think the alsa-guide is clear enough at this point. If a docdev can agree I'll mark this as INVALID.
I can agree. When you recompile a kernel you don't have to change the EXTRAVERSION. Those are only needed when you want to distinguish several (different) kernel trees (different patches) iirc.
closed
