I have Linux MInt installed on an i-mac fitted with an Intel HD 500 sound card. using OSX the keyboard Increase/Decrease/Mute keys control the sound volume irrespective of which application is producing the sound. In Linux however (any distro, Mint, Ububtu, Xubuntu etc.) only the Mute key works. Pressing either of the other 2 brings up the volume 'meter' but has no effect on the actual sound volume.
Sound has to be controlled using the Volume Control or PAVU control as follows:
Under 'Configuration' select 'Analogue Surround 4.0' from the lower window. No other option eg. 'Digital Stereo IEC 958' works. In the upper window there is a large selection of Digital options eg. 'Digital Stereo HDMI' but all are shown as 'Unplugged'.
Under 'Output Devices' the volume slider can be adjusted but it has no effect on the actual sound output.
Under 'System Sounds' various warnings etc. can be adjusted or muted and when an application eg. VLC is playing its volume appears here and can be adjusted. Unfortunately regardless of the 'Output Devices' setting this volume defaults to maximum with ear splitting results each time.
I have raised this on various distro forums with no success and I'm now convinced it is a Linux issue. Digital sound is shown as 'unplugged', is that because a driver for the Intel card is missing or is there a setting somewhere to select this card s the sound controller?
Sound has to be controlled using the Volume Control or PAVU control as follows:
Under 'Configuration' select 'Analogue Surround 4.0' from the lower window. No other option eg. 'Digital Stereo IEC 958' works. In the upper window there is a large selection of Digital options eg. 'Digital Stereo HDMI' but all are shown as 'Unplugged'.
Under 'Output Devices' the volume slider can be adjusted but it has no effect on the actual sound output.
Under 'System Sounds' various warnings etc. can be adjusted or muted and when an application eg. VLC is playing its volume appears here and can be adjusted. Unfortunately regardless of the 'Output Devices' setting this volume defaults to maximum with ear splitting results each time.
I have raised this on various distro forums with no success and I'm now convinced it is a Linux issue. Digital sound is shown as 'unplugged', is that because a driver for the Intel card is missing or is there a setting somewhere to select this card s the sound controller?