Public bug reported:
Binary package hint: pulseaudio
If a small sound sample (less than 4000 samples) is passed to
pa_simple_write, it is not played immediately, contrary to the
documentation for this function. This bug causes problems with Orca
when using espeak at high speed. When users press a key, and key echo
is enabled, there is no sound played until he presses another key, at
which point both keys are played. This will be a significant problem
issue for blind users of Orca.
To help track this bug down, I've created a tiny test case that shows it
very well. Just type 'make' in the keyspeak directory, and run it by
typing './keyspeak'. Just press enter a few times. Each time you press
enter, pa_simple_write is passed a small sound to play, but instead of
playing it right away, no sound is played until you press enter again,
at which point the sound is played twice. In gdb, I watched it go
through the loop and not play the sound twice in a row, but then on the
next call to getchar(), both sounds were played.
ProblemType: Bug
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: bill 6390 F.... pulseaudio
/dev/snd/pcmC0D0p: bill 6390 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf1000000 irq 22'
Mixer name : 'IDT 92HD73C1X5'
Components : 'HDA:111d7675,102802bd,00100103'
Controls : 26
Simple ctrls : 17
Card1.Amixer.info:
Card hw:1 'HDMI'/'HDA ATI HDMI at 0xcfeec000 irq 17'
Mixer name : 'ATI R6xx HDMI'
Components : 'HDA:1002aa01,00aa0100,00100100'
Controls : 4
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [off]
Date: Sun Dec 20 17:20:01 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
NonfreeKernelModules: fglrx
Package: libpulse0 1:0.9.19-0ubuntu4
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-17.54-generic
SourcePackage: pulseaudio
Uname: Linux 2.6.31-17-generic x86_64
XsessionErrors:
(gnome-settings-daemon:13800): GLib-CRITICAL **: g_propagate_error: assertion
`src != NULL' failed
(/usr/lib/drapes/drapes.exe:13917): GLib-WARNING **: g_set_prgname() called
multiple times
(nautilus:13908): Eel-CRITICAL **: eel_preferences_get_boolean: assertion
`preferences_is_initialized ()' failed
(polkit-gnome-authentication-agent-1:13944): GLib-CRITICAL **:
g_once_init_leave: assertion `initialization_value != 0' failed
(firefox:14304): GLib-WARNING **: g_set_prgname() called multiple times
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug
--
Audio passed to pa_simple_write not played immediately
https://bugs.launchpad.net/bugs/498889
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
