GNOME Bugzilla – Bug 441908
mixer track is "muted" when volume is lowered and gets stuck
Last modified: 2008-07-27 08:15:34 UTC
Please describe the problem: Using Default Mixer Track and volume up/down keys to adjust the microphone level of my USB webcam. If I turn down the volume, it displays a "mute" icon on the pop-up indicator and the slider won't move any longer. In fact, acme_volume_get_mute() returns 1 in do_sound_action(), and acme_volume_get_volume() returns 6. I tried changing the vol_step in gconf, but the level is stuck at 0 until I raise it with for instance alsamixer. The Microphone level has only the 0,33,67,100 steps. $ amixer -c 1 Simple mixer control 'Mic',0 Capabilities: cvolume cswitch cswitch-joined Capture channels: Mono Limits: Capture 0 - 3 Mono: Capture 0 [0%] [26.00dB] [on] $ lsusb Bus 001 Device 004: ID 0471:030c Philips PCVC690K WebCam [pwc] $ cat /proc/asound/cards 0 [Intel ]: HDA-Intel - HDA Intel HDA Intel at 0xc8000000 irq 16 1 [U0x4710x30c ]: USB-Audio - USB Device 0x471:0x30c USB Device 0x471:0x30c at usb-0000:00:1d.0-2, full speed Steps to reproduce: 1. 2. 3. Actual results: Expected results: Does this happen every time? Other information:
Commented by Jan Arne Petersen in bug #441552: "seems to be raised by GstAlsaMixer mapping pswitch to mute and cswitch to record."
This should actually be fixed in current 2.23.x. Please reopen if it isn't.