Public bug reported:
Binary package hint: linux-source-2.6.20
Changing level of Master channel from 0 to ~50% doesn't change volume
level. Muting master channel doesn't mute volume. Muting PCM does mute
it. Changing level of Master channel above 50% does have an impact on
sound level.
$ tail -2 /proc/asound/oss/sndstat
Mixers:
0: Analog Devices AD1981
$ amixer
Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 63
Mono:
Front Left: Playback 32 [51%] [on]
Front Right: Playback 32 [51%] [on]
Simple mixer control 'PCM',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 22 [71%] [-1.50dB] [on]
Front Right: Playback 22 [71%] [-1.50dB] [on]
Simple mixer control 'Mic',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Mono
Mono: Capture [on]
Simple mixer control 'Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%]
Front Right: 0 [0%]
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch
Capture channels: Front Left - Front Right
Limits: Capture 0 - 15
Front Left: Capture 0 [0%] [0.00dB] [on]
Front Right: Capture 0 [0%] [0.00dB] [on]
Simple mixer control 'Mix',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Mono
Mono: Capture [off]
Simple mixer control 'Caller ID',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Docking-Station',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Mono
Mono: Capture [off]
Simple mixer control 'Internal Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%]
Front Right: 0 [0%]
Simple mixer control 'Off-hook',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
$ lspci -nv
00:1b.0 0403: 8086:27d8 (rev 02)
Subsystem: 1179:0001
Flags: bus master, fast devsel, latency 0, IRQ 23
Memory at 44080000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
$ asoundconf list
Names of available sound cards:
Intel
$ cat /proc/interrupts
CPU0 CPU1
0: 288394 0 IO-APIC-edge timer
1: 3042 0 IO-APIC-edge i8042
8: 23 0 IO-APIC-edge rtc
9: 135 0 IO-APIC-fasteoi acpi
12: 107 0 IO-APIC-edge i8042
14: 43633 3844 IO-APIC-edge libata
15: 12315 0 IO-APIC-edge libata
17: 36550 0 IO-APIC-fasteoi uhci_hcd:usb3, ipw3945
18: 1 0 IO-APIC-fasteoi yenta
19: 3 0 IO-APIC-fasteoi uhci_hcd:usb1, ehci_hcd:usb5,
sdhci:slot0, tifm_7xx1
20: 419 0 IO-APIC-fasteoi uhci_hcd:usb2
21: 81356 0 IO-APIC-fasteoi uhci_hcd:usb4, [EMAIL
PROTECTED]:0000:00:02.0
22: 574 0 IO-APIC-fasteoi ohci1394, eth0
23: 19197 0 IO-APIC-fasteoi HDA Intel
NMI: 0 0
LOC: 288144 288143
ERR: 0
MIS: 0
In -10 at least muting Master channel would mute sound. Now I can't do
even that :)
** Affects: linux-source-2.6.20 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
** Description changed:
Binary package hint: linux-source-2.6.20
- Changing level of Master channel from 0 to ~50 doesn't change volume
+ Changing level of Master channel from 0 to ~50% doesn't change volume
level. Muting master channel doesn't mute volume. Muting PCM does mute
- it. Changing level of Master channel above 50 does have an impact on
+ it. Changing level of Master channel above 50% does have an impact on
sound level.
$ tail -2 /proc/asound/oss/sndstat
Mixers:
0: Analog Devices AD1981
$ amixer
Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined
Playback channels: Front Left - Front Right
Limits: Playback 0 - 63
Mono:
Front Left: Playback 32 [51%] [on]
Front Right: Playback 32 [51%] [on]
Simple mixer control 'PCM',0
Capabilities: pvolume pswitch
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 22 [71%] [-1.50dB] [on]
Front Right: Playback 22 [71%] [-1.50dB] [on]
Simple mixer control 'Mic',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Mono
Mono: Capture [on]
Simple mixer control 'Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%]
Front Right: 0 [0%]
Simple mixer control 'Capture',0
Capabilities: cvolume cswitch
Capture channels: Front Left - Front Right
Limits: Capture 0 - 15
Front Left: Capture 0 [0%] [0.00dB] [on]
Front Right: Capture 0 [0%] [0.00dB] [on]
Simple mixer control 'Mix',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Mono
Mono: Capture [off]
Simple mixer control 'Caller ID',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Docking-Station',0
Capabilities: cswitch cswitch-joined cswitch-exclusive
Capture exclusive group: 0
Capture channels: Mono
Mono: Capture [off]
Simple mixer control 'Internal Mic Boost',0
Capabilities: volume
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: 0 - 3
Front Left: 0 [0%]
Front Right: 0 [0%]
Simple mixer control 'Off-hook',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
$ lspci -nv
00:1b.0 0403: 8086:27d8 (rev 02)
Subsystem: 1179:0001
Flags: bus master, fast devsel, latency 0, IRQ 23
Memory at 44080000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
$ asoundconf list
Names of available sound cards:
Intel
$ cat /proc/interrupts
CPU0 CPU1
0: 288394 0 IO-APIC-edge timer
1: 3042 0 IO-APIC-edge i8042
8: 23 0 IO-APIC-edge rtc
9: 135 0 IO-APIC-fasteoi acpi
12: 107 0 IO-APIC-edge i8042
14: 43633 3844 IO-APIC-edge libata
15: 12315 0 IO-APIC-edge libata
17: 36550 0 IO-APIC-fasteoi uhci_hcd:usb3, ipw3945
18: 1 0 IO-APIC-fasteoi yenta
19: 3 0 IO-APIC-fasteoi uhci_hcd:usb1, ehci_hcd:usb5,
sdhci:slot0, tifm_7xx1
20: 419 0 IO-APIC-fasteoi uhci_hcd:usb2
21: 81356 0 IO-APIC-fasteoi uhci_hcd:usb4, [EMAIL
PROTECTED]:0000:00:02.0
22: 574 0 IO-APIC-fasteoi ohci1394, eth0
23: 19197 0 IO-APIC-fasteoi HDA Intel
NMI: 0 0
LOC: 288144 288143
ERR: 0
MIS: 0
In -10 at least muting Master channel would mute sound. Now I can't do
even that :)
--
Muting Master channel doesn't mute sound
https://launchpad.net/bugs/93600
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