On Fri, 08 Jan 2016 15:18:58 +0100, Owen Williams wrote: > > Sorry to bump my own thread, but I don't know how else to report bugs to > ALSA (I think the bug tracker was abandoned a while back?). I'm willing > to do work to diagnose and fix this problem (I'm comfortable building > kernels, doing git bisect, using gdb, etc) but I need some guidance > about how to start. If the problem is easily reproducible, could you try bisection? This is the best way to spot out the cause. thanks, Takashi > On Thu, 2015-12-31 at 13:26 -0500, Owen Williams wrote: > > Sometime between kernels 3.13 (ubuntu 14.04) and 3.19 (15.04) there was > > a regression that caused the mixer elements of the Traktor Audio10 > > driver to stop responding to changes to True. I have an older machine > > still running 14.04, and if I open alsamixer I can see and interact > > with the 8 basic boolean switches: > > > > numid=3,iface=MIXER,name='Direct Thru Channel A' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > numid=4,iface=MIXER,name='Direct Thru Channel B' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > numid=5,iface=MIXER,name='Direct Thru Channel C' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > numid=6,iface=MIXER,name='Direct Thru Channel D' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > numid=7,iface=MIXER,name='Phono Input Channel A' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > numid=8,iface=MIXER,name='Phono Input Channel B' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > numid=9,iface=MIXER,name='Phono Input Channel C' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > numid=10,iface=MIXER,name='Phono Input Channel D' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > > > > > or I can use amixer: > > amixer -c T10 cset numid=8 on > > > > > > however on my newer machine, with ubuntu 15.04 and 15.10, I am unable > > to change the values to true. I am a member of the audio group and I > > have also tried with sudo, but when I try to set the value on nothing > > happens: > > > > $ amixer -c T10 cset numid=8 on > > numid=8,iface=MIXER,name='Phono Input Channel B' > > ; type=BOOLEAN,access=rw------,values=1 > > : values=off > > > > The fun part is, if I connect the card to my mac I can set startup > > conditions for these flags. I can set them to true, and when I connect > > to my linux machines the flags start up as true. And then, even on the > > newer kernel, I can turn them off! But I can't turn them back on > > again. > > > > This sound card is the one I'd like to recommend officially for the > > Mixxx DJ project so I'd really like to get to the bottom of this issue. > > > > > > thanks, > > Owen Williams > > > > A Lead Developer, Mixxx.org > > > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxx > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
