machine ibook2.2 gentoo 1.4 rc8 alsa-driver r-0.9.0_rc2 alsasound start works, loads modules correctly alsamixer starts, but doesn't set mixer settings (user _are_ in grp audio!) volume is _very_ low plugin headphones: low volume on headphones, speakers quiet pluout headphones: speakers enabled, low not adjustable volume kernel: 2.4.21-ppc-r2 Sound: M PMAC as Module (OSS) - error is the same without compiled PMAC module USE="alsa oss" Reproducible: Always Steps to Reproduce: 1.emerge unmerge alsa-driver 2.emerge alsa-driver 3.alsamixergui, mplayer /mp3/* Actual Results: as described above
This appears to be a known problem with the current alsa drivers. Using the below workaround I managed to get alsamixer working and raise the volume: http://lists.debian.org/debian-powerpc/2003/debian-powerpc-200303/msg00414.html "A workaround is to load dmasound_pmac before ALSA, then to remove it. The mixer will then works." Along these lines in /etc/modules.autoload I'm loading dmasound_pmac snd-powermac snd-mixer-oss snd-pcm-oss (..) and unloading dmasound in /etc/config.d/local.start, then restoring mixer settings: rmmod dmasound_pmac rmmod dmasound_core /usr/bin/amixer set Master 132 unmute /usr/bin/amixer set PCM 132 /usr/bin/amixer set Bass 17 /usr/bin/amixer set Treble 18 /usr/bin/amixer set PCM,1 116 Notes: Loading snd-powermac will say it fails, however with lsmod I can see it loaded, and it works. Then, plugging or unplugging a headphone will turn the volume down. But any small adjustement in alsamixer will restore it to the previous level. That's how far I've come until now. My iBook is "detected as: 257 (iBook 2 rev. 2)".
This is good info - closing because upstream problem.
A more straightforward version of the workaround: Append this line to the end of /etc/modules.d/alsa: pre-install snd insmod dmasound_pmac && rmmod dmasound_pmac Then run "update-modules" to regenerate /etc/modules.conf (Note: This was tested using kernel 2.6.1-benh1 with the 2.6-compatible module tools on a 700 MHz G3 dual-USB iBook. YMMV.)
