Serial ports with 32-bit vs. 64-bit processors

John G. Heim jheim at
Thu May 16 20:37:09 EDT 2013

Yes, my doubletalk worked during installation. Some of the machines I have been working on do not have sound cards. 
I just took a wildass guess as to how to get the hardware synth working during the install. I figured if you pressed s for speech, you might press g for graphical install. Then I pressed tab and entered my speakup parms, "speakup.synth=ltlk". 

I may have gotten lucky but it worked.


On May 16, 2013, at 2:06 PM, Ryan Hutchings wrote:

> Hi John,
> Did your doubletalk work during wheezy installation as well?
> I tried using my doubletalk lt with Wheezy 64 bit to install, and got no speech.
> I also tried the latest grml live 64 bit cd, and got no speech after doing a modprobe speakup_ltlk.
> I wonder what determines when speakup will work with hardware speech? if it works on your 64bit system it can't be a 64bit thing.
> I tried this on a laptop if that makes any differences?
> Maybe a device in my laptop interferes with the speakup serial code - i.e. a device is using the i/o address that speakup normally associates with a serial port?
> Ryan
> -----Original Message----- From: John G. Heim
> Sent: Thursday, May 16, 2013 3:59 PM
> To: Speakup is a screen review system for Linux.
> Subject: Re: Serial ports with 32-bit vs. 64-bit processors
> Are you saying you can't get your doubletalk to work at all or only if
> you load the speakup_sot module before loading the speakup_ltlk module?
> I don't know if I've ever tried that. But  I have a 64 bit machine
> running squeeze and another running wheezy. Speakup works with my
> doubletalk on either  machine if I load the speakup_ltlk module
> directly. On the squeeze, I'm running a kernel from squeeze-backports
> and on the wheezy machine, I'm running the stock kernel. Here  is what
> uname -r says on each;
> squeeze: 3.2.0-0.bpo.4-amd64
> wheezy: 3.2.0-4-amd64
> My doubletalk also works with the 64-bit grml live CD.   As I said, I'm
> not entirely sure I ever tried loading the speakup_ltlk module after
> speakup_soft. I would have to say that I have though because I put
> speakup_soft in /etc/modules so it loads during boot.
> On 05/16/13 04:07, Tony Baechler wrote:
>> Hash: SHA256
>> Ah, that's what I've been wondering about.  I've asked various people here
>> who claim to have working hardware speech, but never got a response.  My
>> question is if they're running 32-bit or not.  I can not only confirm that
>> it won't work on 64-bit systems but if I try to unload speakup_soft and
>> load speakup_ltlk, it completely locks up the system.  Someone else said
>> they didn't have any problem with serial speech with new kernels and a
>> 32-bit processor, but I couldn't get it confirmed.  Now, my question is
>> what difference would a 64-bit processor make?  Why does it completely
>> lock up here but seems to work for at least three people on older 32-bit
>> processors?  I'm tempted to install 32-bit Debian Wheezy just to see if it
>> makes any difference.  I can say that it doesn't seem to matter on a
>> 32-bit live CD here.
>> On 5/15/2013 3:45 PM, Adam Myrow wrote:
>>> Ok, I am using the kernel that ships with Debian 7.0, which is listed
>>> as 3.2.0-4-686-pae.  My Dectalk USB works just as it always has in
>>> RS232 mode. In other words, serial support isn't broken for me.  This
>>> is the 32-bit version, so maybe that's the difference.
>>> _______________________________________________ Speakup mailing list
>>> Speakup at
>> - --
>> Have a good day,
>> Tony Baechler
>> tony at
>> Version: GnuPG v1.4.11 (MingW32)
>> Comment: Using GnuPG with Thunderbird -
>> iQIcBAEBCAAGBQJRlKHnAAoJEPrAuJWnLe0yfn0P/iXnQjg7+/N8wfGHKe1+eSph
>> Urwuctsw+WKw8jwgFEKcHZz8HhkOggfNzttUItcPiTDJfvD/4cg/KIAJ+XKYMCc0
>> LNxXIZN85uZ2iY5r7xgBgjplbHRsAeLbXrD0UazzXQVkGLfkqC+Kp58aGPGDsY0w
>> //vyg+xvAwggIuFHaSsO9SMBktYKCyGJ4kJn1UOfyZne4TbUQs0rbGG+T1S29p4f
>> /gC0D4uL04Xa374qOSkG+aFso6ET99Ax/3hkPtBZsfL9JZsju3vhhwvoDQtmMONw
>> OPSjNSZoSK0eov9P69HEUuK6QtZwsdE4azk6xDJp0EGftu3cpM0rXm9c0kcLa5k1
>> MiZsqkM0HNgr8gF72D7f4eIdc/E9zzgK2HC9P0lKaZK5E4q7CR4ASKZKwKKlWcez
>> wvZsCq6MqGmQz5dUD5K2bj2QkZT8E4gzSo8PKso7ELs/fcovca5E910Kgj2B8wnb
>> uaCrsbjlxwFMBONxmc3M4FGXnNv2qzCl56asYOaPT+hAvMM7oOJ/XJHXYq0qm1WP
>> A2/FkoSwM1ks/dDjkngwPP4uF473m2xplApkoEDJA+wcPfzaCS70mDS+PMcVMsZC
>> SNkCPg1zl7MsUm/UED25oJ/ZJ1/HbFKFMGU/Rw5YnCZ0q0UwZtxLDfZZwWPgO1n3
>> oNMRyb/34AvysFFcJ0GS
>> =BDqC
>> -----END PGP SIGNATURE-----
>> _______________________________________________
>> Speakup mailing list
>> Speakup at
> -- 
> ---
> John G. Heim, 608-263-4189, jheim at
> _______________________________________________
> Speakup mailing list
> Speakup at
> _______________________________________________
> Speakup mailing list
> Speakup at

More information about the Speakup mailing list