commit 4c93ea7432d4ca74ff4e634d1c0ab6f86f9ce514
Author: Kevin Zheng <kevinz5000@gmail.com>
Date:   Mon May 4 19:01:45 2020 -0700

    Sound fix

diff --git a/sys/dev/sound/pcm/dsp.c b/sys/dev/sound/pcm/dsp.c
index 99fcf8a16db..6186fbcb522 100644
--- a/sys/dev/sound/pcm/dsp.c
+++ b/sys/dev/sound/pcm/dsp.c
@@ -2650,7 +2650,7 @@ dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai)
 			 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep
 			 *       these in pcmchan::caps?
 			 */
-			ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER |
+			ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | caps->caps |
 			    ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT);
 
 			/*
diff --git a/sys/dev/sound/pcm/vchan.c b/sys/dev/sound/pcm/vchan.c
index d8e3509d0eb..287a348bdd6 100644
--- a/sys/dev/sound/pcm/vchan.c
+++ b/sys/dev/sound/pcm/vchan.c
@@ -93,6 +93,7 @@ vchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
 
 	CHN_UNLOCK(p);
 
+	info->caps.caps = PCM_CAP_VIRTUAL;
 	c->flags |= CHN_F_VIRTUAL;
 
 	return (info);