HP xw4400 Workstation User Manual

Page 132

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HP Remote Graphics 4.2.0 User's Guide

124

With ALSA working, users can validate JACK by performing the following
steps:

1. Ensure that the ALSA device is properly configured and can be heard

through the desired port, i.e., headphone jack, speaker, etc.

2. Determine that no other jackd process is running:

3. ps -ef | grep jackd

The following steps connect a simple beeping client to a JACK sound server
daemon:

4. jackd -d alsa hw:0 & # start jackd

5. jack_metro -b 120 & # audio client

6. jack_lsp -c

# display connections

7. jack_connect "metro:120_bpm" \ "alsa_pcm:playback_1"

Note

: jack_lsp may suggest an alternate PCM playback channel based

on your hardware - use that for the jack_connect command

Other JACK tutorial ideas can be found at:

http://dis-dot-dat.net/jacktuts/starting/compiling.html

6.

Cannot connect to running jackd process on Lunux Receiver:

You may not own the executing sound server process (i.e., your user Ids
(UID) may not match). Currently JACK systems only support client-server
combinations where the UIDs match. If UIDs do not match, you will often see
a client connection failure message:

jack server not running?

Troubleshooting Remote USB

HP Remote Graphics Software supports a Remote USB capability. This allows a user
to connect any number of USB devices to a local RGS Receiver system and have the
devices appear connected to the RGS Sender system.

Currently only a single Sender can receive the Remote USB device connections. If
you have problems connecting a Remote USB device, the following checklist may
help to identify the problem:

1.

HP Blade Workstations Only:

Remote USB is only supported on an HP Blade Workstation Client receiver
system connected to a HP Blade Workstation sender system. In addition, the
Sender and Receiver versions must match. See the USB Remote
Requirements section for further details.

2.

HP Remote Virtual USB Driver:

Verify that the HP Remote Virtual USB driver is installed and active on the HP
Remote Graphics sender system. Open the Windows XP Device Manager and

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