- Talk - lists.gtalug.org

Samsung monitor power supply
by Giles Orr 13 Feb '19

13 Feb '19

I've been given a 24" Samsung monitor. I don't know if it works because it requires a specialized power supply, and that didn't come with. It takes 12-14VDC on a barrel connector - I have laptop power supplies that fit it, but as most of them provide 19v I haven't tried to use them as they'd probably kill it - point being, it appears to be a common connector type. I was wondering if anyone had a spare power supply for this thing lying around that they're willing to give away. Since I don't even know if it works, I'd rather not pay you for it ... Thanks. -- Giles https://www.gilesorr.com/ gilesorr(a)gmail.com

7 13

[GTALUG-Announce] CANCELLED - NO GTALUG TODAY
by hi＠gtalug.org 12 Feb '19

12 Feb '19

<https://gtalug.org/meeting/2019-02/> # NO GTALUG TODAY Due to weather, our venue is closed. We encourage folks to be safe and avoid travel today. --- GTALUG Announce mailing list announce(a)gtalug.org https://gtalug.org/mailman/listinfo/announce

1 0

Today's meeting
by Alex Volkov 12 Feb '19

12 Feb '19

Hey everyone, Ryerson is closed today due to severe weather. https://www.ryerson.ca/facilities-management-development/service-requests/a… The meeting is likely to be cancelled. Alex.

1 0

Hacklab Toronto - Moving Crowd Fund
by Scott Sullivan 11 Feb '19

11 Feb '19

Howdy Folks, Hacklab Toronto has been a great friend to the GTALUG community. We had over lap of member of our community. The last few GTALUG Linux in Parks have been hosted by them. GTALUG's board and volunteers have used it as meeting space. Hacklab has co-hosted some of our out-of-cycle guest spearks (last years bash talk). Many of you have found treasures, or divested yourself of junk at the Junk Independence Days. We've been forced to move out of 5 year home due to long term construction that will the leave building uninhabitable until completed. Hacklab has found a new permanent home and we're looking for assistance in funding the work to make the space function for our needs. https://www.indiegogo.com/projects/hacklab-to-is-moving-again/x/2472524#/ w/ Hacklab Member Hat on, and GTALUG president hat off. -- Scott Sullivan

2 1

Security cams question
by o1bigtenor 11 Feb '19

11 Feb '19

Greetings I am looking into using a security cam to observe animal behavior in an area. So I would like to use a camera that is IR capable to 30 m but what I'm not finding is anything that I can run on Linux - - - just M$ is listed. Has anyone out there played with security cams that might be able to help? TIA Dee

8 9

Push Pull Cooling 1 year later
by Russell Reiter 10 Feb '19

10 Feb '19

tl;dr High volume low speed airflow rocks for cooling a home desktop computer. I just did a mechanical service on the home build I started just before all the caching issues broke out last year. Overall performance is quite good but it is the servicability issues which worked out the best. This was my first water cooling system and I went with push pull cooling for the radiator. By far this cooling setup outperformed my expectations. I had really only expected to reduce the ambient noise when the heat and p/s load issues would spin up the various cooling fans. Its the secondary effect of passing the air through the box at a constant low speed which surprised me the most. Not only is this the quietest home PC Ive ever had, its the cleanest. Interior environments differ across the board in terms of heat, dust and humidity but the home environment is the stickiest due to the higher concetrations of cooking oil particles in the air. We've all seen the pictures of dust encrusted neglected power supplies and box cooling fans. I certainly saw enough of them in my time and generally keep a small assortment of fans around. I had fully expected that after one year I would have to pull the interor radiator fans for cleaning and swap them to the exterior and vice versa I was happily surprised when I opened the unit up completely for a service. Not only did it appear to have less than typical (for my place) dust adhesion around fan blades and hubs, the planar surface was almost pristine with the usual hotspots conspicually absent significant buildup. The fan for cooling the vidio card was fine and so was the p/s. A few swipes with 99% isopropanol swabs cleaned the fan blades and the interior side of the radiator. I didn't have to touch the exterior ones. Those fans tended to blow the settling particles away and they land on the inside of the exterior grill vent. Once and a while, if I listen carefully, I can hear the cpu cooling pump or the video card fan but I actually have to listen for it, instead of being bothered by it. All in all I'm quite sure the additional expense at build time for water cooling and extra indirect ventilation will pay off in the long run. If not in actual extention of serviceability til EOL but in ease of service. TODO,s I have to construct an adapter plate for the exterior radiator fans. Currently I am using a Canadian Red Green fix as opposed to the tradional IBM blue wire fix. ie. One screw and a couple of strips of duct tape hold the pull fans to the frame. The optical audio cable doesnt seat properly. I think the tiny flap on the mb connection side has some dangling chad dross I have to take care of. All in all a fun robust build with better than expected results considering all the meltdown suff that started just after I comitted to this particular form.

1 0

video: Benno Rice on "The Tragedy of systed"
by D. Hugh Redelmeier 08 Feb '19

08 Feb '19

I think that this is pretty interesting: <https://www.youtube.com/watch?v=o_AIw9bGogo>

8 17

Richard Stallman is coming to Toronto
by Alex Volkov 05 Feb '19

05 Feb '19

Hello everyone, Richard Stallman is giving a talk at YorkU on Thursday, if anyone wants to go. /Senate Chambers, North Ross Building, Room N940, York University, Toronto, Ontario, Canada/ /Feb 07, 2019/ from 11:00 AM to 12:30 PM https://www.fsf.org/events/rms-20190207-toronto Alex.

2 1

Re: [GTALUG] Wyse Cx0
by Ansar Mohammed 04 Feb '19

04 Feb '19

> > I just picked up 3 NIB Wyse Cx0x (2GB Flash/1GB RAM) on ebay for $5 each. > Great toys as they have a tiny form factor and run Debian quite well. > If anyone is interested I will send the link of the seller. >

2 1

Sendmail Changes
by Chris Tyler 30 Jan '19

30 Jan '19

I have a very old sendmail configuration on a VM on a dying server. I need to move it to a stable hw platform, so I took the sendmail setup and migrated it to a new system with a current Sendmail installation. The previous Sendmail configuration worked fine and was trusted by remote senders. It did not have SPF, DKIM, or DMARC set up. The new Sendmail server worked fine (worked as expected), but was not trusted by some remote MTAs sending TO it - including those used by Google/gmail. This seems odd because the only real difference between the two configurations is the Sendmail version -- something seems to have changed in the software. I reverted to the original system after these experiments last summer, but haven't circled back to it until now, when the failure of the underlying hw is forcing my hand. I haven't been following the evolution of Sendmail. I need to set up a better long-term solution (possibly with another MTA, and definitely with SPF+DKIM+DMARC), but in the short term I urgently need to migrate this configuration over to a box that isn't failing. Is anyone aware of Sendmail changes (either in behavior or defaults) that would explain how remote servers regard the MX? Thanks-- -Chris Tyler

4 3