Thanks for the reply! I've been pouring over the source. Looks like it really hasn't been actively maintained since around 2005, mostly minor refactoring since then. If I have questions that the docs available online can't answer, would this be a good place to ask? I appreciate all the work you guys do! Joe Spencer 602.777.2307 On Sun, Aug 19, 2018 at 1:08 AM Takashi Iwai <tiwai@xxxxxxx> wrote: > On Fri, 17 Aug 2018 09:23:35 +0200, > Joseph Spencer wrote: > > > > When plugging an audio interface in with nomodeset I see the following in > > the logs: > > > > Aug 08 23:19:23 localhost.localdomain kernel: INFO: task pulseaudio:1750 > > blocked for more than 120 seconds. > > Aug 08 23:19:23 localhost.localdomain kernel: Tainted: G > > OE 4.17.11-200.fc28.x86_64+debug #1 > > Aug 08 23:19:23 localhost.localdomain kernel: "echo 0 > > > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > > Aug 08 23:19:23 localhost.localdomain kernel: pulseaudio D12408 > 1750 > > 1268 0x00000000 > > Aug 08 23:19:23 localhost.localdomain kernel: Call Trace: > > > > Aug 08 23:19:23 localhost.localdomain kernel: ? __schedule+0x2ba/0xaf0 > > > > Aug 08 23:19:23 localhost.localdomain kernel: ? > > prepare_to_wait_event+0xd2/0x180 > > Aug 08 23:19:23 localhost.localdomain kernel: schedule+0x2f/0x90 > > > > Aug 08 23:19:23 localhost.localdomain kernel: > usX2Y_urbs_start+0x208/0x470 > > [snd_usb_usx2y] > > Aug 08 23:19:23 localhost.localdomain kernel: ? finish_wait+0x80/0x80 > (snip) > > So this is waiting for the event to be triggered by the urb > completion, but it didn't happen by some reason on your machine. > > > The audio interface doesn't work and without nomodeset X freezes. > > > > Any help pointing me in the right direction would be greatly appreciated. > > It looks like an issue with the snd_usb_usx2y driver to me, but I'm not > > sure. > > Unfortunately the driver is very special and does somewhat magical way > only the author knows of well. > You need to follow the code, and at least check whether the urb > submission at the playback start worked properly as expected. > > > Takashi > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
