Stuart Longland (AX4MSL)<p>A bit more fiddling with the Toughpad today, I notice it has a WWAN module.</p><p>During boot-up, an Ericsson F5521gw quickly shows itself and enumerates a network device and some serial ports (CDC ACM).</p><p>But then, 5 seconds later, it deregisters itself. Quite why, I have no idea.</p><p>Now this is a 3G era card, so in Australia, is about as useful as a screen door on a submarine for Internet access… HOWEVER, it does provide a GPS module.</p><p>Now that *would* be handy.</p><p><a href="https://sven-seeberg.de/wp/?p=614" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">sven-seeberg.de/wp/?p=614</span><span class="invisible"></span></a> and <a href="https://www.tjansson.dk/2009/01/using-the-builtin-gps-in-a-thinkpad-x200-under-linux/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tjansson.dk/2009/01/using-the-</span><span class="invisible">builtin-gps-in-a-thinkpad-x200-under-linux/</span></a> suggest it can be done…</p><p>The problem is figuring out what makes it suddenly disappear. That second article points out a SIM card being needed, so I grab the old 3G era SIM from my old ZTE T83 phone, power the tablet off, stuff it in the SIM card slot, and power it back up.</p><p>No dice. It again says peek-a-boo, enumerating then disappearing.</p><p>I didn't keep the Windows 8.1 install, so I can't boot that to have another look.</p><p>For now, I've just turned it off in the UEFI BIOS. At least it's not drawing unnecessary power … but if anyone has any ideas as to what I can shoot that might be telling the 3G module to disappear… I'm all ears.</p><p><a href="https://mastodon.longlandclan.id.au/tags/ToughPad" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ToughPad</span></a> <a href="https://mastodon.longlandclan.id.au/tags/EricssonF5521gw" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EricssonF5521gw</span></a> <a href="https://mastodon.longlandclan.id.au/tags/gpsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>gpsd</span></a> <a href="https://mastodon.longlandclan.id.au/tags/cdc_ncm" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>cdc_ncm</span></a> <a href="https://mastodon.longlandclan.id.au/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linux</span></a></p>