HP Remote Graphics Software 6.0 User Guide

Remote Audio device support on Linux
An audio device is required to be installed in Linux-based remote computers in order for application-
generated audio to be sent to the local computer. Furthermore, the audio device installed in the
remote computer must have the ability to record from a control that is the mix of all audio signals. On
a Windows computer, by way of comparison, this control is often called “Stereo Mix”. Linux, however,
does not follow a standard naming convention for this control—hence, the need to evaluate individual
audio devices to determine their suitability for use on Linux.
RGS will attempt to capture application generated audio from the Sender and playback the result on
the Receiver. Not all audio device drivers provide the capability to capture application generated
audio.
The following list of audio devices are known to work on Redhat EL4 and Redhat EL5:
●
SoundBlaster Audigy 4—SB0660
●
SoundBlaster Audigy 4—SB0610
●
SoundBlaster Audigy 2ZS—SB0350
●
SoundBlaster—SB0160
●
SoundBlaster Live!—CT4780
●
SoundBlaster Live!—CT4760
HP personal workstations have a high definition audio device on the motherboard. This device is
known to use a driver on Redhat EL4 and Redhat EL5 that does not allow RGS to capture application
generated audio.
The Linux virtual audio driver can be used on systems without audio hardware. In some cases, it may
be desirable to disable the physical audio device and install the virtual audio driver. See
Sender audio
on Linux on page 39 for information on how to install the virtual audio driver.
IMPORTANT: The Linux virtual audio driver is the “only” supported audio device for RHEL V6.
Hardware audio devices are not supported.
NOTE: The Linux virtual audio driver is not supported in a virtual machine. Timing information from
the kernel in a virtual machine may not be precise enough to ensure consistent audio quality.
144 Appendix A Supported hardware and software