- Talk - lists.gtalug.org

Re: [GTALUG] mysterious restarts
by Russell Reiter 15 Jun '16

15 Jun '16

Sent from mobile. On Jun 15, 2016 12:29 PM, "Bob Jonkman via talk" <talk(a)gtalug.org> wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Russell writes: > > Take a look at a trolly pole then a pantograph array and tell me > > the pantograph needs less maintainence till EOL > > It's not the pantograph that requires less maintenance, it's the > overhead wires. A single So perhaps the increased array maintenance balances out against the reduced wire maintenance. This leaves the main feature of the system as stated to be, as its increased voltage capacity. trolley pole requires the overhead wire to > have switches (like track switches, not electrical switches) at > intersections and any location where the streetcar can choose a > direction. Very often there are disconnections as the trolley pole > moves from one wire to another. That can't be good for the circuitry. > And how often does the trolley pole come disconnected from the > overhead wire? > > OTOH, the wires for the pantograph can be continuous, there can be > multiple wires at intersections, and there are far fewer > disconnections, intentional or accidental. But still there is the cost of the maintenance stations for the array. I've seen trolly pole's disconnect and be reconnected by the driver in a minutes time. I don't know how the pole contacts are maintained but the graphite bar maintenance of the pantographic grid is a stated weakness of the system. > > - --Bob. > > > On 2016-06-15 11:01 AM, Russell Reiter via talk wrote: > > On 6/15/16, Lennart Sorensen <lsorense(a)csclub.uwaterloo.ca> wrote: > >> On Tue, Jun 14, 2016 at 05:57:44PM -0400, Russell Reiter wrote: > >>> I don't doubt it at all. I don't understand not taking > >>> advantage of the pantographic ability to carry higher voltage; > >>> that is its primary feature. > >> > >> Actually the primary feature is less maintenance, simpler wiring, > >> and higher speed supported (not that you need that in Toronto > >> streets). > > > > Take a look at a trolly pole then a pantograph array and tell me > > the pantograph needs less maintainence till EOL. You've never heard > > of a trolly pole monitoring station, there is a pantograph > > monitoring station though. It's higher voltage capacity that is the > > reason this form factor takes dominance in overhead wiring. > > > > As you said higher vehicle speeds are a moot point in Toronto. > > > >> > >>> That would be like buying a Porsche and detuning the turbo, > >>> just doesn't follow common sense. > >> > >> Well all that really matters is how much power they can deliver, > >> so voltage * current. Higher voltage means less current, but > >> also bigger insulators needed. It's a tradeoff. Given they > >> already have 600V equipment, sticking with that makes sense. > >> After all increasing the insulator length might not be practical > >> based on the height of the mounting point for the current wires. > >> > >>> On the other hand, for future capacity planning while load > >>> balancing the polyphase AC grid we draw that energy from, the > >>> advantage of inverting to higher DC voltage under higher > >>> demand, does make sense. > >> > >> Well I am quite sure they are running AC motors, so they would be > >> taking the DC and inverting it to AC and making it whatever > >> voltage they need at the time for the motors. > > > > So doesn't economy of scale account for the sensibility of > > starting with a higher DC voltage when part of the load is inverted > > back to AC for motors? I'm assuming the onboard solid state keeps > > the input at DC, rectifying it again would go beyond the pale. > > > >> > >> -- Len Sorensen > >> > > --- Talk Mailing List talk(a)gtalug.org > > https://gtalug.org/mailman/listinfo/talk > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2 > Comment: Ensure confidentiality, authenticity, non-repudiability > > iEYEARECAAYFAldhglMACgkQuRKJsNLM5ervBACgjVBKk8woXmXYcQrMAaAB+Yq2 > yXEAninGZStjLXcxcm51FYw8t480jEeN > =DEgv > -----END PGP SIGNATURE----- > --- > Talk Mailing List > talk(a)gtalug.org > https://gtalug.org/mailman/listinfo/talk

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Speaker for July 2016 Meeting
by Myles Braithwaite 15 Jun '16

15 Jun '16

We are looking for a speaker for 12 July 2016 meeting. Anyone interested in giving a talk?

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Last Night's Meeting Annoucments
by Myles Braithwaite 15 Jun '16

15 Jun '16

<https://wiki.gtalug.org/meeting:2016-06> # Linux in the Park 2016, **23 July** All planning is being done in the wiki @ <https://wiki.gtalug.org/event:linux_in_the_park_2016> # Upcoming Events ## June 27 June 2016 at 7pm - Damian Conway -- Perl 6: More Concurrency, Less Contusion Even if you have no interest in Perl, Damian is always interesting. <http://www.meetup.com/Toronto-Perl-Mongers/events/231418224/> 28 June 2016 at 7pm - Damian Conway -- On the Shoulders of Giants: 400 Years of Perl 6 <http://www.meetup.com/Toronto-Perl-Mongers/events/231418278/> ## July 27 July 2016 at 6pm - BOSH 101 with David Ing Our August 2014 meeting was on BOSH so if you are looking for a refresh you should definitely check this out. <http://www.meetup.com/Toronto-Pivotal-User-Group/events/227459952/> ## August 6 August 2016 at 6pm - Dan Harrison on his battles and winnings creating a SalesForce client for Pebble Watch <http://www.meetup.com/PebbleTO/events/224057584/>

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Thinkpad [2] : Power malfunction on suspend; faster suspend to disk?
by Matt Price 15 Jun '16

15 Jun '16

Another thinkpad issue, this one more serious: when I suspend to ram, my Thinkpad T440s sometimes has a serious power malfunction. While suspend generally succeeds, at some point the pulsing power light on the lid goes out and it’s no longer possible to power on the laptop. I have to open the lid, disconnect the internal bettery, and generally also hit the internal power reset button. I can then restart, but of course lose all my work. At first this happened about once a month, then once a week, and now it happens several times a day. 1. Anyone else having this issue? And do you know what actually causes it, and if it can be fixed? I’ve searched online and there are various threads about it, but I haven’t found any actionable information. Recently updated my BIOS and changed some BIOS settings, but to no apparent effect. 2. As a workarond, I’ve just switched from suspend-to-ram to hybrid suspend, which writes an image to disk before suspending to ram. (Took me a long time to do this, because I had no swap partition & my main partition was encrypted, so I had to resize the encrypted partition, ettc.) This seems to work! Yay! However, suspend-to-disk is really slow. In the old days I used Txonice for hibernaion, but that project has really slowed down in the last few years. Is anyone still using it? How about uswsusp? Is either one compatible with the systemd hibernation commands? My experience with tuxonice was that it was abot 5 times faster than native hibernation, so I’d really like to compress the disk image Thanks again! Matt

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Thinkpad [1] : Twitchy lid close switch
by Matt Price 15 Jun '16

15 Jun '16

Hi Folks, It’s been a long time since I participated i n the group, hope everyone’s well! I have Arch installed on a Thinkpad T440s; it’s mostly worked well for quite a while, but I’m running into some problems; separating them out into individual emails for clarity. The simplest issue is a very sensitive lid close sensor. The sensor is inside the lid hinge, and it often registers a state change when I adjust the screen angle. So, two questions: - any other THinkpad users to there seeing this, and if so, have you figured out a hardware fix? - failing that, does anyone have a suggestion for a software fix – say, a custom script that systemd can run as a hook before the LidSwitch event fires? I don’t know much about the systemd power management features. I noticed the “HoldoffTimeoutSec” variable in /etc/systemd/logind.conf, and currently have it set to 30s (cf. https://www.freedesktop.org/software/systemd/man/logind.conf.html) But it hasn’t yet solved my problem. As usual, thanks so much for your help! Matt

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40" 4k Philips Monitor for $699.95 at BestBuy, Jun. 8 and 9 only
by CLIFFORD ILKAY 14 Jun '16

14 Jun '16

Hello, I had bought a Wasabi Mango 42" monitor from a Korean vendor on eBay last May and when it broke down for the second time within the first 13 weeks, neither the vendor nor Wasabi Mango provided warranty support. Fortunately, I had bought a SquareTrade warranty and they came through and reimbursed me for the full purchase amount. Orchids for SquareTrade, onions for Wasabi Mango and gnestore on eBay, and onions for eBay's useless reputation system that prevents buyers from leaving reviews after 90 days from purchase. All that does is provide an incentive for the seller to be responsive within the first 90 days and not even pretend to care once the buyer can no longer leave a negative review. Just to give you an idea of how ill-equipped Wasabi Mango must be to provide after-sale support and how little they care about their reputation, I left a scathing review of their monitor on their Facebook page and they never responded and the last time I checked some months ago, it was still there for the whole world to see. I bought this same 40" 4k Philips monitor for $699.99 at a Black Friday sale last year at BestBuy and it has been working great(*). The Wasabi Mango was an LG IPS panel. This one is a VA panel. Theoretically, the IPS panel is supposed to be "better" but I really do not have any objections to the video quality on the Philips. I have not noticed any dead pixels and the brightness is uniform throughout. It has an easy-to-use joystick control and a hard power switch. I have an ASUS GT 960 Strix video card running the nVidia binary driver on Fedora 23 driving the monitor through a DisplayPort cable. (*) Once every few months, I have to update the binary driver (it's not automatically updated) when I lose X after a kernel update. Occasionally, I'll see a flickering of a window that is not in the foreground. If I move the mouse, the flickering will disappear, which has me suspect the video driver and not the monitor. It's not frequent enough to be anything more than a minor irritant. Neither of those things are particular to this monitor. With a panel this large, I have not found any need for font-scaling. There is no way I could read text on a 28" 4k monitor without font-scaling. It would be hard to beat the price/performance of this monitor and with the weaker Canadian dollar, monitor prices have been firm. You will not see this monitor at this price very often. In short, it's a great buy if you've been thinking of upgrading to a 4k monitor. -- Regards, Clifford Ilkay + 1 647-778-8696

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dinner before June meeting: Basil Box?
by D. Hugh Redelmeier 14 Jun '16

14 Jun '16

Reference material: <http://wiki.gtalug.org/pre-meeting_dinner> Please help maintain and improve this wiki page. If you went to May's dinner, consider adding a comment about Thai on Yonge. I tentatively suggest we go with Miles' suggestion from last month: I'm interested in Basil Box. This is Thai (I think), just like last month. This is a consequence of nobody else making a suggestion. But if you are quick we can decide on another location. <https://wiki.gtalug.org/pre-meeting_dinner#basil_box> Address: 351 Yonge St. (part of Ryerson SLC building, opposite Elm St.) <https://www.yelp.ca/biz/basil-box-toronto> <http://www.blogto.com/restaurants/basil-box-toronto> Do read the reviews to understand what this is: - food is (intentionally) cold - you choose what goes into your "box" - apparently this is like Chipotle (I've never been to one)

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Yahoo/Rogers/Outlook and GTALUG (was We are having DMARC/DKIM troubles)
by Myles Braithwaite 13 Jun '16

13 Jun '16

tl;dr Hopefully this issue is fixed. I have added `REMOVE_DKIM_HEADERS = Yes` to the `mm_cfg.py` file. This basically removes the sender's DKIM email header when sending the message to the subscribers. This should stop the issues.

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Re: [GTALUG] We are having DMARC/DKIM troubles ...
by Alvin Starr 13 Jun '16

13 Jun '16

On 06/12/2016 02:23 AM, ac(a)main.me wrote: > On Sat, 11 Jun 2016 18:24:43 -0400 > CLIFFORD ILKAY <clifford_ilkay(a)dinamis.com> wrote: > <snip> >> This is obviously a problem for non-technical users. They simply do >> not understand any of this and it all becomes too complicated for >> them. Most users do not know how to add anything to their address >> book or create message filters/rules and they think the list server >> is broken and should be "fixed" when in fact, it's their email >> provider. >> I never see these issues with subscribers who have Gmail accounts, by >> the way. >> Email is dying a slow death. The alternatives, like Twitter direct >> messaging, Slack (ugh!), WhatsApp (double ugh!), and various instant >> messaging schemes are worse. Those will eventually be polluted by >> spammers, too. >> > Would like to start my reply by saying that I received my first spam in > 1987, from CompuServ and that imnsho email will never die, it is too > well suited to human nature. > > These days, I am trying all sorts of new ways of trapping new spam bots > and figuring out how to get more spam, more data, more bots. > Huge multi nationals like Google etc do not share their data > > To understand the small spam problem in 2016, one has to > understand the differences in modern email. > > Mass email providers like @gmail.com @yahoo.com @hotmail.com are > hard/difficult to block - and they know that - so some of them, like > yahoo.com for example, does not spend as much money as say google.com > does - to fight abuse. > > If @dinamis.com would dare to send spam - @dinamis.com would simply end > up in a rbl > > Our rbl's commonly block at least 100 yahoo servers for each single > google.com server and the blocks last anything from an hour to weeks, > depending if they stop their spam > > Interestingly, if Google is blocked for spam they bounce back to their > user with : technical error at the receiver - this is kinda evil as it > implies that their is a problem at the receiving server, when Google > full well knows that their is an admin restriction due to Google being > abusive... > > branding I guess, users have to be kept as mushrooms for as long as > possible so that the large guys can dominate and take over the world :) > > All you need to end up on an RBL is one hacked user. Been there. Cleaned up after that. If you have a few tens to hundreds of million of clients(like the big guys) you will have lots who are compromised and now sources of spam. Its amazing the the big guys don't have all their mail servers blocked all the time. Your right that its annoying that the big guys seem to get by without paying attention to the rest of us. As an aside some times I get the feeling RBLs are getting close to being extortionist in their tactics. I have had clients with mail servers that get black listed and they find themselves having to pay to get off some of the RBL's. -- Alvin Starr || voice: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 alvin(a)netvel.net ||

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OT: Cisco SP112 Vs Grandstream HT702
by Ivan Avery Frey 13 Jun '16

13 Jun '16

Which is the better VOIP adapter?

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