If you can find someone with a non Comcast issued modem I would suggest testing that. I went through 3 different xfinity crap modems resulting in the same BS performance. This may not resolve your issue but worth a try. Make sure that your connections are well tightened as well. On Feb 1, 2015 2:19 PM, "Olwe Bottorff" <galanolwe at yahoo.com> wrote: > Outside says Xfinity XB3. Admin page says: > > Model: DPC3939 > Vendor: Cisco > Hardware Revision: 1.0 > Serial Number: 269815875 > Processor Speed: 447.28 MHz > DRAM: 524288 MB > Flash: 128 MB > > > On Sunday, February 1, 2015 3:01 PM, Ryan Coleman <ryan.coleman at cwis.biz> > wrote: > > > > Which model modem did they bring? > > On Feb 1, 2015, at 1:44 PM, Olwe Bottorff <galanolwe at yahoo.com> wrote: > > Looking at the modem admin page, I saw that the errant T410 was only > listed as its MAC address. Also, it was not listed as DHCP but always > listed with a "Reserved IP" of 172.16.0.145 --which will not allow itself > to be changed, even when I repeatedly try to choose DHCP and save. On a > hunch, I changed (Ubuntu/Gnome) in the "IPv4 Settings" tab from "Automatic > (DHCP) to "Automatic (DHCP) addresses only". Now it works . . . after a > whole weekend of hair-tearing-out! Can anyone tell me why it wants to > default to (won't change from) "Reserve IP"? And what did my changing to ". > . . addresses only" do exactly? > > Thanks. > > > On Sunday, February 1, 2015 1:43 PM, Olwe Bottorff <galanolwe at yahoo.com> > wrote: > > > > I want to blame Comcast because these problems on the T410 don't appear > when I use it on any other Wifi connection (I'll test again to make sure) > -- and they don't even happen when Comcast gave us a loaner modem a few > weeks ago! The new box is a dual 2.4/5.0 GHZ, while the loaner box was just > 2.4 GHZ. On the new (and previous) 2.4/5.0 box I can't get any Internet > logging into the 2.4, and the 5.0 connection gives me the aforesaid > weirdness. There has been sporadic weirdness with other things too: Android > devices tend to act up occasionally; an older Kindle has trouble getting > online. I also tested this with the T410 on a straight ethernet connection > to the modem -- same problems. To make it even more confusing, I tried > Win8.1 on the T410 -- and it worked just fine. So if my T410/U14.10 works > elsewhere AND with a different Comcast modem, gosh, it must be some very > weird clash with the 2.4/5.0 Comcast modem and my T410/U14.10. Also, my > Thinkpad X201 used to have weirdness, but it settled down and seems to work > now. That's another wrinkle to this, problems come and go. For a long time > we'd get Internet AFTER we waited 10 minutes or so after Wifi login, > sometimes even with ethernet. But again, like I say, my older T61/U14.10 > works fine. The only explanation I can think of is that the Comcast 2.4/5.0 > modem and U14.10's network software don't like each other when U14.10 is > installed on my T410. Just for laughs, I should get a non-Debian Linux > version or even BSD for my T410 and see what happens. > > > On Sunday, February 1, 2015 11:32 AM, Ryan Coleman < > ryan.coleman at cwis.biz> wrote: > > > > My Thinkpad T61 (also Ubuntu 14.10) works fine with no weirdness. > > So it’s your laptop not Comcast. > > It’s amazing who quickly people blame their ISP when only one device on > the network has issues. > > I suspect something is RFU with your firewall (UFW). > > On Feb 1, 2015, at 9:47 AM, Olwe Bottorff <galanolwe at yahoo.com> wrote: > > Still having problems with my Comcast Internet service. Now it looks like > my U14.10 Thinkpad 410 connection (wire or w-less) won't do ssh (no route > to host), won't give me most web pages, but, amazingly, will connect with > gmail, YouTube, and Wikipedia. Also, I can do software updates and > synaptic. My Thinkpad T61 (also Ubuntu 14.10) works fine with no weirdness. > > LB > Grand Marais (in spirit) > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > > > > > > > > > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20150201/981a67e4/attachment.html>