Time Machine and Same Username Bug

September 1st, 2019

We have a couple high capacity drives attached to a Mac mini running macOS Server on High Sierra. Family Macs use Time Machine to back up to these drives. At some point, my wife’s password on her Mac (running Mojave) changed from what was on the mini and Time Machine began to error out. Some foreshadowing: she uses the same username on the mini and her Mac.

After her password on the mini changed, her Time Machine backups displayed the following error messages:

“There was a problem connecting to the server”
“Time Machine can’t connect to the backup disk”
“OSstatus error 65”

Basic troubleshooting called on me to make a manual connection using Finder (command K) from her Mac to the mini – mounting the drive was successful, so I went back to Time Machine and tried from there, but the same errors above barfed out. Frustrating.

From Terminal on my wife’s Mac, I pasted in the following line:

log show --predicate 'subsystem == "com.apple.TimeMachine"' --info | grep 'upd: (' | cut -c 1-19,140-999

I pasted output from the command into Google and came across this post on Apple’s site:


Yes, Satrop’s issue and fix is it! The username on my wife’s Mac is identical to the username on the mini and somehow this disturbs things if the password changes. To get around this issue, I decided to use the following workaround, which is essentially changing the credentials on her Mac for how it mounts the mini. From her Mac I had to:

1. Disable Time Machine by System Preferences->Time Machine->Select Disk…->(click the disk you’re trying to mount)->Remove Disk.

2. In Keychain.app, remove all instances of the saved password to your NAS, in my case the mini. I searched for “mini” and “” and deleted those instances.

3. From Finder, mount the mini’s disk (Command K) using my own credentials, which obviously differ from hers.

4. After the disk mounts, go back to System Preferences->Time Machine->Select Disk…->(select the mounted disk – I used AFP to mount the disk, so when I hovered over it I could see its address had the AFP protocol).

5. Success! When you quit Time Machine preferences, it should automatically start a new backup (or continue an existing one).

Homebridge with web UI

June 8th, 2019

I have posted on installing and removing Homebridge platforms and accessories, which are useful for installing a web user interface for Homebridge. I’ve had good luck installing this web user interface from Terminal.app:

sudo npm install -g –unsafe-perm homebridge-config-ui-x

By installing this package, you’ll be able to install and uninstall packages and accessories and updated Homebridge’s config.json file with a graphical user interface. Be sure to open port 8080 or whatever port your prefer from the outside so you can gain remote access. Also be sure to change the default username and password if you do this 🙂

Lumma Systems Grip Lights and Water

June 4th, 2019

Last summer, the plastic micro-USB covers snapped off my lovely Romanian Lumma Systems Grip Lights. I had plenty of time to find new covers, but of course didn’t and could have at least covered the port with a large rubber band, but I digress.

This spring, I carelessly rode through a few spring showers that seemingly shorted out my lights. The lights will still somewhat work when pressing the button, but they randomly turn on and off and cycle through modes all by themselves. Fortunately the laser still works. I happened to be one of the lucky backers who received all three sets of lights that I ordered, which means I still have a couple working sets to roll with, but I really want to fix up my broken left Grip Light.

I pulled two phillips screws out of the grip light and disconnected its power cable. The board slides out of the housing by gently prying up on the rubber fittings around each LED. Using my digital multimeter, I delicately poked around the PCB, which isn’t all that complicated. I soon found resistors R7, R8, and R14 to have given up their ghosts. R7 is marked 470, R8 is covered in rust and unreadable, and R14 is marked 220. I’ll try to verify R8 on another board, but it will probably be covered in dried hot glue unless I tear some away to expose it.

I don’t have the proper board level soldering gun to attempt this repair, but I may give it a shot with my pencil soldering iron and try to replace the blown resistors. Will post an update later if I can size and source the resistors.

Testor’s Black Enamel Clean-up

April 21st, 2019

I must be looking in the wrong place, but it felt difficult to figure out what to use for remove Testor’s Black Enamel from a paint brush. After reading a few sources, we decided to use a small container (wire nut) filled with Paint Thinner.

After inserting the brush, covered in black enamel, into the wire but, five the brush a several spins, pull the brush out, and wipe the brush with a paper towel. Allow it air.

Good to go!

Aruba VPN

April 18th, 2019

If you are running Aruba VIA 3.1.3 (vpn), you might notice in Console.app that a previous version of Aruba is busy throwing out error messages:

Apr 18 13:59:24 BCS-MBP-2 com.apple.xpc.launchd[1] (com.arubanetworks.vpnservice[1428]): Service could not initialize: Unable to set current working directory. error = 2: No such file or directory, path = /Applications/Virtual Intranet Access.app/Contents/MacOS: 17G5019: xpcproxy + 10940 [1405][1FC7BF6A-6296-382C-913A-4FF8915953DC]: 0x2
Apr 18 13:59:24 BCS-MBP-2 com.apple.xpc.launchd[1] (com.arubanetworks.vpnservice): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.

This may be a previous version of Aruba VIA that I did not completely remove from my Mac. I had good luck leaving the current version installed and just deleting the remaining portion of the old version by running the old version’s uninstaller, saved here:

“/Users/(your username)/Library/Application\ Support/Virtual\ Intranet\ Access/Uninstaller.app”

Running this file seemed to delete files from the old version residing in Application Support and other places, but it doesn’t seem to delete anything relevant to the current (3.1.3) version of Aruba VIA installed in my Applications folder.

KMC Chain Compatibility

January 1st, 2019

My Big Dummy needs a couple chains to work. I wanted to flip the drivetrain tonight and had a couple partial KMC chains laying around, a CN-HG53 and a CN-HG73. For anyone else trying this, I was able to join them together and they seem to work. I plan on rolling with these the rest of the winter and putting something more uniform back in play this spring. I can’t wait!

Move over Moves, hello Move X!

August 22nd, 2018

For over four years, I used Moves.app on my iPhone and loved how the data was freely exportable, easy to view, backed up, and best of all automatically collected without having to start and stop an app like Strava – I’m a Mac user, devices should work for us, not the other way around. Frustrated and disappointed, I wasn’t completely surprised when FaceBook shut down Moves on July 31, 2018. I was hoping Moves.app would continue to allow me to view previously recorded data after Moves’ servers were shut down, but sadly I was wrong, the app stopped working.

I had backed up Moves data through July 18, 2018, but my export and download on July 30 from Moves’ servers failed without me noticing until it was too late – darn it!

Looking ahead, I wanted a replacement for Moves.app for the above reasons. Happy to say I found a new developing app called “Move X“, which reproduces several of Moves’ features including the gorgeous user interface. I’ve been reporting bugs and feature requests to the Move X developers, who readily correspond via email. I don’t have a FaceBook account, but if you do, log in to it with Move X and the developers will be able to more closely work with you on identifying bugs with Move X.

For those who backed up and downloaded their Moves.app data, Move X directly imports your old data. Just move the .zip file containing your old Moves.app data to your iCloud Drive space and Move X should be able to find it.

The tracking algorithm Move X uses has a ways to go. It seems your movement data is uploaded to their server where it is crunched. I bike a lot and unfortunately, Move X always seems to think I’m driving a car as “Transport”. While Moves.app had a way to change the category for data incorrectly categorized, Move X does not – I hope they fix this soon or else figure out a better algorithm, because nearly all of my bike rides are being categorized generically as “Transport”.

Otherwise, I’m excited to be back up and running so soon. While Move X doesn’t have near the movement-type accuracy that Moves.app had, the developers seem eager to improve on it and for now, Move X accurately tracks where I was and when I was there, which is the other half of what I really wanted. Yes, Google Timeline does this too, but I find I much prefer the Moves.app/Move X interface for quick views of my data from a mobile device.

Big Dummy Cable Run

August 1st, 2018

This has come up for me a couple times and I can never seem to find a good source on the web.

For my Surly Big Dummy equipped with Surly Ope Bar handlebars and Rohloff Speedhub, the shift cable housing length from the Rohloff grip shifters is 87 inches. This is for the largest Dummy frame, 22 inches, built in 2008.

This has come up, because I love my Yokozuna brake cable housing, so I decided to go with their shift cables this time around. To order cables and housing long enough, consider SKU 63640, Yokozuna Rohloff Cable kit, that should include the following:

2  pcs       2500mm x 4mm SIS black housing

2  pcs      SIS 1.2mm x 2500mm Shift wire

6  pcs       4mm plastic housing end caps

2  pcs       Aluminum cable tips

Will report back on how it goes.

BungeeCord and Spigot on macOS High Sierra

March 18th, 2018

My son hopes we can host a Minecraft Server with lots of mods, but he wants our server based on the 1.8.x codebase, because of how it works with combat. I was concerned about security exploits on an older version of the software, but it seems that there aren’t too many well-published exploits in the wild. The current codebase for the server and client are up to 1.12 with 1.13 on the horizon, so our old server will need to allow folks with 1.9-1.12+ clients. Our server will also need to allow teleporting to other worlds, which we will accomplish with BungeeCord acting as a proxy and the Multiverse-Core plugin. We are opting to locally host the Minecraft Server from our Mac mini running High Sierra and macOS Server, so we also want Mac-specific startup scripts to automatically reboot the Minecraft Server suite any time after a reboot.

We considered running GlowStone, but for now, we decided  to use Spigot for the server software and BungeeCord as the proxy for multiple worlds. To get these software packages and Mac-specific startup scripts configured and installed, we followed Kyler Holland’s video:

We deviated from Kyler instructions with Spigot – we downloaded the latest 1.8.x version of Spigot (seemed to be 1.8.8), which we grabbed here:


And we also decided to run build 1303 of BungeeCord, which we nabbed here:


We also modified the startup command for Spigot to give it 2 GB of memory using the following code:


cd "$( dirname "$0" )"

java -Xmx2G -XX:MaxPermSize=128m -jar spigot-1.8.8-R0.1-SNAPSHOT-latest.jar

To allow 1.9 and newer Minecraft clients to join our 1.8 server, we loaded the ViaVersion-1.3.0 plugin available here:


We also bumped the RAM requirements to 2.5GB, And everything seems to be running fine.

Since the original install, we’ve added plugins, including EssentialsX-2.0.1, Factions, Multiverse-Core-2.6.0, PermissionsEx-1.23.4, worldedit-bukkit-, and worldguard-6.2.1. There are a few more that he wants, so I hope they don’t compromise stability.

DeDRM and macOS High Sierra

March 17th, 2018

Should you need to remove DRM from a rented library book for a bit past your due date, the following should help.

  1. Download the current version of DeDRM from Alf (6.5.5, 6.6.1, 6.6.3 or newer).
  2. Unzip the downloaded DeDRM tools file
  3. Open the application at the following location DeDRM_tools_6.5.5->DeDRM_Macintosh_Application->DeDRM.
  4. Click “Select Ebook…”
  5. Now open a browser and rent a book from your public library.
  6. When it is available, download the book – I typically go for the ePub, which is viewable in iBooks or Adobe Digital Editions 2.0 or newer on a Mac.
  7. A file with a .acsm might be downloaded from the library, double-click this file to open it in Adobe Digital Editions 2.0 or newer.
  8. Inside ADE, an ePub of your book will be downloaded from the library and it will expire in a set number of days. Right click the book inside ADE’s library and select “Show File in Finder”.
  9. When this book is shown in the Finder, drag it to DeDRM’s file select window (Step 4) titled “Please select a DRMed ebook” and then click “Choose”.

Success. A copy of your rented book will be stripped of its DRM and saved in the same directory as Step 4.

** UPDATE #1 ** 6.5.5 and 6.6.1 are not launching on macOS 10.13.6. Will look further into this.

** UPDATE #2 ** I never looked further into the above situation, but 6.6.3 is working fine for me on macOS 10.13.6.