http://bugzilla.kernel.org/show_bug.cgi?id=13934
Summary: cannot unmute sound by press mute button on Thinkpad
T500
Product: ACPI
Version: 2.5
Kernel Version: 2.6.30.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
/proc/acpi/ibm/volume status
unmuted:
level: 7
mute: off
commands: up, down, mute
commands: level <level> (<level> is 0-15)
mute buttond pressed:
level: 7
mute: on
commands: up, down, mute
commands: level <level> (<level> is 0-15)
mute button pressed again (does not change to mute: off, but volume up/down
change it to off):
level: 7
mute: on
commands: up, down, mute
commands: level <level> (<level> is 0-15)
xev - no event
showkey - no event
kernel logs - no entry
workaround is add "acpi_osi=Linux" to boot parameters
I think, button could generate some event
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