No beep on linux (KDE) environement

Question

Hello, everyone !

I have a little trouble with the beep. Eagle doesn't play any beep (neither when displaying an error message, neither when I end a route).echo -e '\a'

I already check the 'beep' option (option, settings, beep), and it's working fine on windows PC.but on my linux (KDE) PC, no way to produce any sound.

The sound work on that PC, (echo -e '\a' in a console produce a nice dong !, and other application manage to produce sounds.

Is somebody have an idea ?

autodeskguest · Answer

Guillaume barrey wrote:

Hello, everyone !

I have a little trouble with the beep. Eagle doesn't play any beep
(neither when displaying an error message, neither when I end a
route).echo -e '\a'
I already check the 'beep' option (option, settings, beep), and it's
working fine on windows PC.but on my linux (KDE) PC, no way to produce
any sound.
The sound work on that PC, (echo -e '\a' in a console produce a nice
dong !, and other application manage to produce sounds.

Is somebody have an idea ?

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It can be ugly. If you actually have a speaker in your PC (many modern

desktops and laptops don't) make sure the pcspkr module is loaded, and

confirm in KDE that System Settings->Application and System Notifications-

System Bell has the 'Use system bell instead of system notification' box

checked.

If you don't have a speaker, good luck. I haven't figured out how to get a

beep from Eagle yet either without a built-in speaker (my box doesn't have

one). Without a speaker, you have to use system notifications, which

basically means KDE plays a sound file when it gets a notification event.

For example, to get your echo -e '\a' example to work in konsole, you have

to have the box I mentioned earlier unchecked. Then, in the 'Manage

Notifications' tab, use the 'Event source' drop down box to select

'Konsole'. Select the 'Bell in Visible Session' line, check the 'Play a

sound' box, and select one of the available sound files. Then click 'Apply'.

Echoing the bell character, as your example does, in the konsole window will

now play that sound file.

However, I haven't figured out how to get KDE to recognize a beep from Eagle

using system notifications. Eagle is not one of the apps recognized as a KDE

'Event source'. (Presumably you have to do something KDE-ish in the source

code to make that happen?) As a Qt app, perhaps Eagle is using

QApplication::beep() to make the beep sound. When I looked at that in past,

it appeared that Qt is either sending an ASCII 7 (\a) to stdout or calling

XBell if xlib is linked in. In any case, I have no idea if that's actually

what Eagle is calling to generate the bell, or what magic incantation KDE

needs to recognize it as a notification and play the appropriate tune.

Bob