Sound support is also included in the kernel if you have followed the
instructions above. The relevant settings in /usr/src/linux/.config
are:
CONFIG_SOUND=y
CONFIG_AUDIO=y
CONFIG_MIDI=y
CONFIG_YM3812=y
# CONFIG_PAS is not set
CONFIG_SB=y
CONFIG_ADLIB=y
# CONFIG_GUS is not set
# CONFIG_PSS is not set
# CONFIG_MPU401 is not set
# CONFIG_UART6850 is not set
CONFIG_UART401=y
CONFIG_MSS=y
# CONFIG_SSCAPE is not set
# CONFIG_TRIX is not set
# CONFIG_MAD16 is not set
# CONFIG_MAUI is not set
SBC_BASE=220
SBC_IRQ=5
SBC_DMA=0
SB_DMA2=1
SB_MPU_BASE=330
SB_MPU_IRQ=5
MSS_BASE=530
MSS_IRQ=5
MSS_DMA=1
DSP_BUFFSIZE=65536
The Libretto is not capable of accepting sound input, and the output through the tiny speaker next to the display panel is fair at best. Using the stereo output jack to drive headphones or external speakers, however, much better sound can be obtained.
To test the sound driver, try
cp "/dos/windows/media/The Microsoft Sound.wav" /tmp/tms.wav
play /tmp/tms.wav
If you have a MIDI file, such as the ``canyon.mid''
demonstration included with most Windows distributions (though not on
the Libretto), try playing it using playmidi (or, under X,
xplaymidi).
Use an application such as xmixer to adjust output volume and
balance.
Fujiwara Teruyoshi,
fjwr@mtj.biglobe.ne.jp, reports that the Libretto's audio output may be
corrupted after resuming from hibernation, and that this can be fixed either by
playing a very short audio file, or by compiling the sound driver as a module
and loading it via kerneld. This problem may be specific to the
Libretto 50; I haven't encountered it on the 70.