diff options
| author | Christos Margiolis <christos@FreeBSD.org> | 2024-04-05 10:27:47 +0000 |
|---|---|---|
| committer | Christos Margiolis <christos@FreeBSD.org> | 2024-04-05 10:33:23 +0000 |
| commit | 365067e98e4e9deba18070f5ebd4e9eee7149b6d (patch) | |
| tree | 04666b5635d80fcf59a7a14691d41b682557a85f /share | |
| parent | 5ffb19ac36c4b5c9e72d69048250c8e56acff739 (diff) | |
| download | src-365067e98e4e9deba18070f5ebd4e9eee7149b6d.tar.gz src-365067e98e4e9deba18070f5ebd4e9eee7149b6d.zip | |
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man4/snd_uaudio.4 | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/share/man/man4/snd_uaudio.4 b/share/man/man4/snd_uaudio.4 index 6e2509b8f2ac..b6a6c06a2312 100644 --- a/share/man/man4/snd_uaudio.4 +++ b/share/man/man4/snd_uaudio.4 @@ -27,7 +27,7 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd March 26, 2024 +.Dd January 29, 2024 .Dt SND_UAUDIO 4 .Os .Sh NAME @@ -156,6 +156,15 @@ and modified for by .An Hiten Pandya Aq Mt hmp@FreeBSD.org . .Sh BUGS +The PCM framework in +.Fx +only supports synchronous device detach. +That means all mixer and DSP character devices belonging to a given +USB audio device must be closed when receiving an error on a DSP read, +a DSP write or a DSP IOCTL request. +Else the USB audio driver will wait for this to happen, preventing +enumeration of new devices on the parenting USB controller. +.Pp Some USB audio devices might refuse to work properly unless the sample rate is configured the same for both recording and playback, even if only simplex is used. |