Finally found the bad commit: SHA da6d276957ea56b9514aa5c8d885edf22f0b3e65 ALSA: usb-audio: Add resume support for Native Instruments controls I did upgrade my firmware at some point, perhaps the newer firmware changed how this works. Happy to test whatever patches against a newer kernel (I'm on Wily, so 4.2.0-23). Owen On Tue, 2016-01-12 at 07:22 +0100, Takashi Iwai wrote: > On Sun, 10 Jan 2016 21:20:17 +0100, > Owen Williams wrote: > > > > Unfortunately I can't narrow the problem down more specifically than > > the changes from Ubuntu-3.18.0-14.14 to Ubuntu-3.19.0-1.1. If I try to > > git bisect between those, I end up with commits that don't have the > > proper debian packaging information so I can't build packages. Any > > ideas? I see a bunch of merges for the sound subsystem in the 3.19 > > branch so if can figure out how to build debs I bet the problem is in > > there. > > Well, usually you'd need to install the kernel manually without > packaging. There aren't so wide spread files / directories, so it's > not too hard to manage manually. > > > Takashi > > > > > On Sat, 2016-01-09 at 08:42 +0100, Takashi Iwai wrote: > > > 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
