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PREVIOUSLY_DELIVERED(0.00)[multimedia@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[212.227.15.15:from:127.0.2.255]; DWL_DNSWL_LOW(-1.00)[gmx.net:dkim]; RWL_MAILSPIKE_POSSIBLE(0.00)[212.227.15.15:from]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[multimedia] X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 14 Feb 2021 08:55:39 -0000 FreeBSD locks up when my USB audio interface is connected and accessed via pulseudio. The interface is connected via USB hub. Symptoms: First USB mouse (on same hub) stops working. System becomes increasingly unresponsive until it totally locks up. I can reproduce the problem by simply running pactl list If I reboot immediately, shutdown also hangs. Kernel debugger shows this suspicious trace (transcribed by hand): __mtx_lock_sleep() uaudio_chan_play_callback() usbd_callback_wrapper() usb_command_wrapper() usb_callback_proc() usb_process() I'm on 13.0-BETA, amd64. This is the interface, but the problem also occurs with a different device= : uaudio0 on uhub3 uaudio0: on usbus2 uaudio0: Play[0]: 192000 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Play[0]: 176400 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Play[0]: 96000 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Play[0]: 88200 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Play[0]: 48000 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Play[0]: 44100 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 192000 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 176400 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 96000 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 88200 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 48000 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: Record[0]: 44100 Hz, 2 ch, 32-bit S-LE PCM format, 2x8ms buffer. uaudio0: No MIDI sequencer. pcm7: on uaudio0 uaudio0: No HID volume keys found.