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I think with Bookworm you should have BRLTTY 6.7. I have the following line in the brltty.conf.</div>
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braile-device ttyUSB0</div>
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This works for Alva connected to a USB serial converter.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> BRLTTY <brltty-bounces@brltty.app> on behalf of Hammer Attila <hammera@pickup.hu><br>
<b>Sent:</b> Saturday, December 21, 2024 9:49 AM<br>
<b>To:</b> Informal discussion between users and developers of BRLTTY. <brltty@brltty.app><br>
<b>Subject:</b> [BRLTTY] Focus 1 70 display and USB to serial adapter: possible connecting this scenario?</font>
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<p>Dear List,</p>
<p><br>
</p>
<p>Unfortunatelly, possible my old Alva display are defected, so I tryed my another home have Focus 1 70 display.</p>
<p>Normal serial cable and normal serial 9 pin port the display work, but my second machine not have a general serial pin cable hardvare connector, so I buied a Genbird USB to serial 9 pin cable.</p>
<p>Both Ubuntu 20.04 and Debian 12 are correct detected my usb to serial cable, and created correct the /dev/ttyACM0 device.</p>
<p>In /etc/brltty.conf file I set braille driver related config key, and added following line into the config file:</p>
<p>braille-device serial:ttyACM0 # First serial device.<br>
</p>
<p><br>
</p>
<p>Because the display shows only the focus 70 related status message and not the actual braille output, I restarted BRLTTY with sudo brltty -d /dev/ttyACM0 and -D fs command, and used the -L option.</p>
<p>I translated the possible relevant log file entries from hungarian to english with Google translator, but I don't what means the missing libraryes related error messages, and how possible correcting these issues.</p>
<p>The log file is created In Ubuntu 20.04 Mate edition, with Brltty 6.5 revision.</p>
<p>If need, I have possibility to create a log file my test machine the Debian 12 Bookworm release, I not remember BRLTTY come my system from the backport repo or not.</p>
<p>Log file says following:</p>
<p><a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.446">2024-12-21@15:18:38.446</a> [brltty] BRLTTY 6.5 rev BRLTTY-6.5 [<a class="x_moz-txt-link-freetext" href="https://brltty.app/">https://brltty.app/</a>]<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.447">2024-12-21@15:18:38.447</a> [brltty] executing as the invoking user: root<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.953">2024-12-21@15:18:38.953</a> [brltty] BrlAPI Server: release 0.8.4<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.954">2024-12-21@15:18:38.954</a> [brltty] fs/libbrlttyxlx.so: cannot open shared object file: No such file or directory<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.954">2024-12-21@15:18:38.954</a> [brltty] cannot load screen driver: fs/libbrlttyxlx.so<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.954">2024-12-21@15:18:38.954</a> [brltty] screen driver not loadable: lx<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.954">2024-12-21@15:18:38.954</a> [brltty] fs/libbrlttybfs.so: cannot open shared object file: No such file or directory<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.954">2024-12-21@15:18:38.954</a> [brltty] cannot load braille driver: fs/libbrlttybfs.so<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.954">2024-12-21@15:18:38.954</a> [brltty] braille driver not loadable: fs<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.954">2024-12-21@15:18:38.954</a> [brltty] Speech Driver: no [NoSpeech]<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.956">2024-12-21@15:18:38.956</a> [server-main] another BrlAPI server is already listening on 0 (file /var/lib/BrlAPI/.0 exists)<br>
<a class="x_moz-txt-link-abbreviated" href="mailto:2024-12-21@15:18:38.956">2024-12-21@15:18:38.956</a> [server-main] error while creating socket 0</p>
<p><br>
</p>
<p>I forgot any grouping adding command, or set different the permissions if need use a braille display with an usb to serial cable?</p>
<p>Since eleven years I use my previous display with USB cable.</p>
<p><br>
</p>
<p>If anybody have any useful idea, please tell a hint if have a little time.</p>
<p><br>
</p>
<p>Kind regards,</p>
<p><br>
</p>
<p>Attila<br>
</p>
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