Chaining DNSMasq and resolved

I had a weird problem recently that I solved, and it was mostly due to my mis-configuring of my Ubuntu laptop. I finally figured it out when setting up my new Dell XPS Developer Edition laptop, so I wanted to share.

The situation: I would go to my local library and couldn’t connect to their wireless internet. But if I disabled dnsmasq and restarted the network-manager service, it would work fine.

What I didn’t realize was happening is dnsmasq was taking over local DNS control from the systemd-resolved service. What is systemd-resolved and why is it important? The man page reads:

systemd-resolved is a system service that provides network name resolution to local applications. It implements a caching and validating DNS/DNSSEC stub resolver, as well as an LLMNR and MulticastDNS resolver and responder.

My library uses a captive portal. When you connect to their network it brings up a page that makes you agree before actually being able to use the network. systemd-resolved has all the know-how to handle that – dnsmasq doesn’t.

I love dnsmasq and don’t want to loose it’s functionality. I want to use both the system resolved (pronounced resolve-D) and dnsmasq. Here’s how to have your cake and eat it too.

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Simple HiDPI Monitor Scaling with Wayland in Ubuntu 18.04

My company helped me purchase a new Dell 7390 XPS 13 Developer Edition. The biggest hurdle I had when setting it up was getting my external monitor to work correctly. It’s a standard HD monitor (1920×1080), and the laptop screen is 4K (3840×2160) – known as a “HiDPI” monitor because while it’s run at 3840×2160 it’s scaled 200% so actual humans can read the fonts.

This presented a problem because the scaling was affecting the external monitor – it was appearing as if the resolution was half of HD – 960×540. Hello 1990s!

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Dell 7390 XPS 13 Developer Edition Laptop

Transcription:

Today I’m going to be unboxing the new Dell XPS Developer Edition for 2019. I just got this in the mail – super excited. I believe the number is 7390. Check it out!

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The Middle-Aged Person’s Guide to the Orchestra

I used to be a season ticket owner of the Minnesota Vikings. It was expensive. Also the owners seem crooked, and so does the NFL, and many of the players. So when I stopped paying for football season tickets, I replaced them with Minnesota Orchestra season tickets.

That was back in 2013-14, and we didn’t renew the orchestra tickets for the next couple years. Jessi was getting more involved with winter guard, which presented several scheduling challenges. I realized I missed it… dearly.

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Spec Slash Parts & Settings

After a full year of my son and I racing our 2wd Slashes in the “Spec Slash” class, I wanted to record everything we’ve broken, fixed, upgraded, and replaced. I’ll also include a setup sheet of what we landed on being a fairly consistent indoor off-road carpet track setup. Spec Slash rules differ by track, […]

The post Spec Slash Parts & Settings appeared first on Meatball Racing.

After a full year of my son and I racing our 2wd Slashes in the “Spec Slash” class, I wanted to record everything we’ve broken, fixed, upgraded, and replaced. I’ll also include a setup sheet of what we landed on being a fairly consistent indoor off-road carpet track setup.

Spec Slash rules differ by track, so check with your local track(s) before you buy anything. Some allow replacing stock plastic parts  with RPM brand replacements, some do not. If you race at multiple tracks, better to error on the side of caution and stick with stock parts. I’ve included both parts here for reference.

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Summer cycling essentials: sunglasses

I’ve always had a love/hate relationship with sunglasses. I want nice ones, but I’m very penchant for breaking or losing them.

One brand I’ve been leaning towards lately is Tifosi. In the world of cycling, the tifosi is the italian word for their fans. It literally means those infected by typhus, so you could consider them to be rabid fans.Continue reading “Summer cycling essentials: sunglasses”

Slash 4×4 Crawler (Part 4) Body

This whole project started on the basis of the Pro-Line Jeep Rubicon Unlimited body – it’s a beauty. So how does this thing fit on a Slash and how do we make it look less like a short course truck? Paint Paint wise I did a simple 2-color paint job – black for the top, […]

The post Slash 4×4 Crawler (Part 4) Body appeared first on Meatball Racing.

This whole project started on the basis of the Pro-Line Jeep Rubicon Unlimited body – it’s a beauty.

So how does this thing fit on a Slash and how do we make it look less like a short course truck?

Continue reading “Slash 4×4 Crawler (Part 4) Body”

Slash 4×4 Crawler (Part 3) Powertrain & Tires

With the width of the vehicle worked out, it is time to make it drive like a crawler. To slow the Slash down to believable crawler speed I actually kept the stock gearing in place (19.23 Final Drive Ratio for the brushed 4×4). Then I added a RC4WD 1:3 Gear Reducer, which would change the […]

The post Slash 4×4 Crawler (Part 3) Powertrain & Tires appeared first on Meatball Racing.

With the width of the vehicle worked out, it is time to make it drive like a crawler.

To slow the Slash down to believable crawler speed I actually kept the stock gearing in place (19.23 Final Drive Ratio for the brushed 4×4). Then I added a RC4WD 1:3 Gear Reducer, which would change the final drive ratio to almost 60:1 – a popular ratio amongst crawlers and close to the TRX-4 low-speed setting.

The gear reducer is normally a bolt on part, but there were some tweaks I had to do to get it to fit the Titan 550 motor. First the receiver hole in the gear reducer is too small fo the 550’s standard 13mm bearing enclosure (the part that sticks out right before the motor shaft). Which is strange because the age-old Tamiya 540 motor also specifies 13mm for this part of the motor.

Continue reading “Slash 4×4 Crawler (Part 3) Powertrain & Tires”