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Re: [Devil-Linux-discuss] Beep in serial mode
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From: Dominic R. <dl...@ed...> - 2010-09-24 15:05:21
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According to man beep at swoolley.org/*man*.cgi/*beep*: 'beep attempts to poke at the tty, which is how it beeps'. So yes it doesn't use the bell character but it is still using tty. The serial console setup establishes 2 consoles: tty0 and ttyS0. In this case, a/c to http://tldp.org/HOWTO/Remote-Serial-Console-HOWTO/configure-kernel.html, 'kernel messages will appear on both the first virtual terminal and the serial port, but messages from the init system and the system logger will appear only on the first serial port'. My guess is that the output from the beep program, like that from the init system and the system logger, goes to ttyS0 and not to tty0. There doesn't seem to be an option in beep to force it to go elsewhere, so maybe for serial consoles echo is the only way. I guess /etc/init.d/beep could be modified to use an echo sequence directed to /dev/tty0 instead of the beep sequences if `tty` is /dev/ttys/0? Something like: # diff -U 0 /etc/init.d/beep /opt/beep --- /etc/init.d/beep 1980-01-01 01:01:01.000000000 +0000 +++ /opt/beep 2010-09-24 16:01:20.000000000 +0100 @@ -51,0 +52,4 @@ + if [ "`tty`" = "/dev/ttys/0" ]; then + # force bell sound to tty0 i.e. local machine + for n in {4..1}; do echo -en "\a">/dev/tty0; sleep 0.$n; done + else @@ -58,0 +63 @@ + fi (untested in a serial console configuration) Dominic On 24/09/2010 15:35, Heiko Zuerker wrote: > The 'normal' DL beep doesn't use the bell character, the program > controls the PC speaker directly as far as I remember. > > Heiko > >> -----Original Message----- >> From: Dominic Raferd [mailto:dl...@ed...] >> Sent: Friday, September 24, 2010 9:29 AM >> To: dev...@li... >> Subject: Re: [Devil-Linux-discuss] Beep in serial mode >> >> Ok, I'm glad it worked then. It works for me too with>/dev/tty1, or >>> /dev/tty0. Does it work for you with /dev/tty0? >> I am trying to understand why the normal DL startup beep doesn't work >> for you. Googling 'man beep', there is a suggestion about chmod 4755 >> beep which might help. >> >> Can anyone else using DL through serial console configured by > install-on- >> usb confirm that they don't hear startup beeps at the DL box? >> >> Dominic >> >> On 24/09/2010 14:56, mailing dl2 wrote: >>> In fact I was looking to hear the beep at the DL box, when you are > in >>> front of the computer and you are not sure if it has finished its > boot >>> process. >>> >>> So your answer match my need. >>> >>> Thanks. >>> >>> 2010/9/24 Dominic Raferd<dl...@ed...>: >>>> Sorry then maybe this isn't a solution for you. You might check > the >>>> settings of your serial-connection client machine, maybe there is a >>>> way to enable the bell sound. For instance Putty offers different >>>> actions upon receiving a bell via the terminal. Maybe your client > is >>>> just ignoring the bell character when it receives it (via ttyS0)? >>>> >>>> On 24/09/2010 13:58, mailing dl2 wrote: >>>>> Yes, when I redirect to tty1, I hear it on the DL box. >>>>> >>>>> I will add a script at startup with : echo -e "\a"> /dev/tty1 >>>>> >>>>> Thanks. >>>>> >>>>> 2010/9/24 Dominic Raferd<dl...@ed...>: >>>>>> So echoing to tty1 do you hear it on your remote machine (via >>>>>> serial >>>>>> connection) or just on the local (DL) machine? >>>>>> >>>>>> On 24/09/2010 12:51, mailing dl2 wrote: >>>>>>> I did the test and the result is: >>>>>>> >>>>>>> through serial port (ttyS0) I do not hear the beep through > console >>>>>>> port (tty1) I do hear the beep >>>>>>> >>>>>>> Regards. >>>>>>> >>>>>>> 2010/9/24 Dominic Raferd<dl...@ed...>: >>>>>>>> I don't use serial mode but does it work if you echo a bell >>>>>>>> character (ASCII 07)? >>>>>>>> >>>>>>>> echo -e "\a" >>>>>>>> >>>>>>>> Or for several bells, not as distinctive as DL's normal > start-up >>>>>>>> beep but might be adequate for a start-up signal: >>>>>>>> >>>>>>>> for n in {3..7}; do echo -en "\a"; sleep 0.$((10-$n))s; done >>>>>>>> >>>>>>>> Dominic >>>>>>>> >>>>>>>> On 24/09/2010 08:31, mailing dl2 wrote: >>>>>>>>> Hello, >>>>>>>>> >>>>>>>>> We use our DL boxes in serial mode (install-on-usb) as it is >>>>>>>>> easier to have serial acces than KVM access on remote sites. >>>>>>>>> >>>>>>>>> The problem we face is that in serial mode, the beep at the > end >>>>>>>>> of the startup process are not working. >>>>>>>>> >>>>>>>>> At the startup it outputs this: >>>>>>>>> >>>>>>>>> Starting beep system-up noises: >>>>>>>>> ioctl: Invalid argument >>>>>>>>> ioctl: Invalid argument >>>>>>>>> ioctl: Invalid argument >>>>>>>>> ioctl: Invalid argument >>>>>>>>> ioctl: Invalid argument >>>>>>>>> ioctl: Invalid argument >>>>>>>>> ioctl: Invalid argument >>>>>>>>> >>>>>>>>> When I type "beep" through serial port (ttyS0) it outputs the >>>>>>>>> error message and it does not beep. >>>>>>>>> And when I type "beep" through console (tty1) it outputs the >>>>>>>>> error message but it does beep. >>>>>>>>> >>>>>>>>> It is realy usefull to hear the beep when you (or a non >>>>>>>>> technical >>>>>>>>> user) are in a technical without acces to a monitor. >>>>>>>>> We really miss it. >>>>>>>>> >>>>>>>>> Regards. >> > ------------------------------------------------------------------------ > ------ >> Nokia and AT&T present the 2010 Calling All Innovators-North America >> contest Create new apps& games for the Nokia N8 for consumers in >> U.S. and Canada >> $10 million total in prizes - $4M cash, 500 devices, nearly $6M in >> marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish >> to Ovi Store http://p.sf.net/sfu/nokia-dev2dev >> _______________________________________________ >> Devil-linux-discuss mailing list >> Dev...@li... >> https://lists.sourceforge.net/lists/listinfo/devil-linux-discuss > > ------------------------------------------------------------------------------ > Nokia and AT&T present the 2010 Calling All Innovators-North America contest > Create new apps& games for the Nokia N8 for consumers in U.S. and Canada > $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing > Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store > http://p.sf.net/sfu/nokia-dev2dev > _______________________________________________ > Devil-linux-discuss mailing list > Dev...@li... > https://lists.sourceforge.net/lists/listinfo/devil-linux-discuss > |
