Hello, with latest kernel 2.6.28 and thinkpad_acpi 0.21-20081111 the volume keys does not work correctly on my Lenovo T400 (7UET49WW). I can mute the sound by pressing the mute key: $ cat /proc/acpi/ibm/volume level: 15 mute: on commands: up, down, mute commands: level <level> (<level> is 0-15) and unmute by pressing volume up or down key: $ cat /proc/acpi/ibm/volume level: 15 mute: on commands: up, down, mute commands: level <level> (<level> is 0-15) The mute status has no effect when a audio device (eg headphones) is pluged in (the sound is always on). The sound level can't be changed with the volume up and down keys. With "echo up > /proc/acpi/ibm/volume" and "echo down > /proc/acpi/ibm/volume" the level changes in /proc/acpi/ibm/volume, but has no effect. Let me know if i can provide any other information. PJ ------------------------------------------------------------------------------ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel