Ah, and my comment above about reboot---I just tried "shutdown -r 3"
from the LiveCD, and -that- beeped the speaker! "echo foo | wall" also
beeps.
I rebooted the normal 64-bit system and noticed that "echo foo | wall"
didn't beep the system bell. (Although I was also ssh'ed in from
elsewhere and -that- machine's bell beeped when wall emitted the
message.) If I did the rmmod/modprobe trick, -then- "echo foo | wall"
beeped both bells (the system bell of the machine running Karmic, and
the system bell of the other machine that was ssh'ed into it).
So clearly the rmmod/modprobe workaround -is- doing something. But not
enough---still no bell in single-user mode, even if X has never run, or
in X, from Emacs, or bash, etc. --BUT---:
I've discovered that if I do rmmod/modprobe on a fresh boot (now back to
experimenting on my normal 64-bit boot, not the LiveCD), no beep, If I
do "echo foo | wall", that beeps, though only -after- the rmmod/modprobe
(it won't beep if I do it on a freshly-booted system that has only
loaded pcspkr once). And -THEN-, rubout at bash beeps, as does ^g in
Emacs, BUT ONLY outside of X. This works whether I've booted single-
user or if I've done C-A-F1 to get a non-X shell and logged into that.
I've also tried "service gdm stop; service gdm start" and that hasn't
helped. (I figured the wall is obviously initializing -something-, but
restarting gdm after that doesn't help.) I made sure to do "xset b 100"
before these tests, since every time gdm comes up, it's apparently
setting the bell volume to zero ("xset q" reads bell volume 0% unless I
reset it)---where is gdm doing this?
So I'm obviously starting to pry this problem open a bit---I can get
beeping outside of X (both via rubout at an empty bash command prompt,
or in an X-less Emacs) iff and only if I (a) rmmod/modprobe pcspkr, and
then -after- that, do something that causes beeping (like "echo foo |
wall'; haven't retried doing something like "shutdown -r 3; shutdown -c"
but I'm betting that would work too). But inside of X, still no dice,
even after I can get beeping reestablished outside of X, so I'm not all
the way there yet.
--
System beep broken in Karmic despite heroic efforts to fix it
https://bugs.launchpad.net/bugs/486154
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