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Author Archive

Disk mount issue

Monday, November 27th, 2023

I added a new disk, removed one on my workstation. It is running Ubuntu 20.04. Booted up, and the drive letters have changed, and the md number of a RAID 1 array changed. So I updated /etc/fstab and went to mount the /dev/md1 array. The mount command completes without error, but the disk did not mount. Turns out, needed to:

systemctl daemon-reload

Then the mount worked, and I could add the new disk to the RAID 1 array.

Limit Firefox memory

Saturday, November 11th, 2023
  1. Open Firefox, go to about:config.
  2. Go to browser.tabs.unloadOnLowMemory, set it to true.
  3. Go to browser.low_commit_space_threshold_mb, set it to 2/3 or 3/4 of total memory on your computer. (e.g. 32GB -> 24000).

Links for November 2023

Saturday, November 4th, 2023

G.M.’s Cruise Moved Fast in the Driverless Race. It Got Ugly.
“Half of Cruise’s 400 cars were in San Francisco when the driverless operations were stopped. Those vehicles were supported by a vast operations staff, with 1.5 workers per vehicle. The workers intervened to assist the company’s vehicles every 2.5 to five miles, according to two people familiar with is operations. In other words, they frequently had to do something to remotely control a car after receiving a cellular signal that it was having problems.”

Giant Pyramid Buried in Indonesia Could Be The Oldest in The World, Researchers Say
Gunung Padang

The genetic heritage of the Denisovans may have left its mark on our mental health. The study reveals that the genetic variant observed, which affects zinc regulation, could have signified an evolutionary advantage in our ancestors’ adaptation to the cold., link

Recent Trades – U.S. Congress. Reported within 45 days of trade.

NYT CTE in kids story

Zeppelins from Another World

Interview with GlobalFoundries CEO Dr. Thomas Caulfield by Dr. Ian Cutress
“There are only five foundries on the planet of any scale, > two billion dollars revenue. In 2022, GlobalFoundries was 8 billion dollars. In Taiwan it’s TSMC and UMC, then there’s GlobalFoundries with our global footprint, then Samsung Foundry and SMIC in China.”

SSD-Tester — SSD, M.2, thumb drive benchmarks

Warped Front Pages: Researchers examine the self-serving fiction of ‘objective’ political news

Kellogg, Kraft Win Antitrust Suit Against Egg Companies

Links for October 2023

Monday, October 2nd, 2023

Exclusive: John Kelly goes on the record to confirm several disturbing stories about Trump

Hair Turns Gray Due to Stuck Stem Cells: Hair-coloring stem cells must swing back and forth between their maturity states to give hair its color. Sun et al., 2023

Unvaccinated more likely to have heart attack, stroke after COVID, study finds. Being fully vaccinated reduced the risk by about 41 percent.Jiang et al, 2023

Are the costs of Brexit big or small? by John Springford
“the British economy is around 5 per cent smaller due to Brexit”

The Overwhelming Case for CBDCs (central bank digital currencies) by Willem H. Buiter

Scarce Labor As The Cause Of Innovation. The Habakkuk thesis, Rome and the robotics revolution by Angela Nagl

Book: Ignition!: An informal history of liquid rocket propellants. by John D. Clark

The Tacit Knowledge Series

Why can’t our tech billionaires learn anything new? On Marc Andreessen’s “techno-optimist manifesto” by Dave Karpf

Links for September 2023

Saturday, September 16th, 2023

The Trilateral Shitpost Fire that was the 1980 GOP convention, part 1: On the long history of thinly veiled antisemitic conspiracy theories on the GOP’s right edge by Seth Cotlar

An Exciting New Approach to Autoimmune Diseases by Eric Topol

Absent Gods, Absent Catastrophes : The Sharing Knife and The Lord of the Rings

Disaster Conservatism: There’s nothing worth saving from the Tory years. Nothing at allby Nick Cohen

Links for August 2023

Sunday, August 27th, 2023

Book rec: John McPhee’s Annals of the Former World books, first is Basin and Range

Sator Square. The Rotas-Sator Square is a two-dimensional acrostic class of word square containing a five-word Latin palindrome.

Links for June 2023

Saturday, June 3rd, 2023

Lessons From a Renters’ Utopia by Francesca Mari

Toroidal propellers: A noise-killing game changer in air and water. Quiet and reduce fuel consumption by somewhere around 20%.

Links for May 2023

Monday, May 1st, 2023

Insulin pump tear down: Omnipod teardown, video of Omnipod tear down

Unity game design platform, overview

The 26 women who have accused Trump of sexual misconduct

Electric Vehicles Could Match Gasoline Cars on Price This Year. Includes subsidies for electric vehicles. I’ve also seen reports that electrics are thin on dealer lots. Definitely a year where the new car market is changing

Non-Disparagement Clauses Are Retroactively Voided, NLRB’s Top Cop Clarifies

Base editing: Revolutionary therapy clears girl’s incurable cancer. CAR-T therapy for leukemia

More Women Are Holding Political Office — But Not Everywhere by Ella Koeze, Meredith Conroy and Amelia Thomson-DeVeaux
Women in State Legislatures 2023 from Center for American Women and Politics (CAWP)

Domino Train Blocks Set Building And Stacking Toy, $58.99

The 19 best bookstores in Chicago by Lindsay Eanet

Yes, masks reduce the risk of spreading COVID, despite a review saying they don’t

Book: “The Enceladus Mission” (2018) by Brandon Q. Morris

Columbia Journalism Review’s Big Fail: It Published 24,000 Words on Russiagate and Missed the Point. The magazine’s attempted takedown of the media’s coverage bolsters Trump’s phony narrative. by David Corn

The Case Against Dictatorship by Adam Gurri

Journalists (And Others) Should Leave Twitter. Here’s How They Can Get Started by Dan Gillmor

The Kavanaugh Cover-up by Jay Kuo. US Supreme Court Judge.

Intel: Just You Wait. Again. Intel trying to stage a comeback.

How the Banshees of Inisherin Sweaters were Knit

How did solar power get cheap part II by Brian Potter
Levelized Cost of Energy

Summary Report on EVs at Scale and the U.S. Electric Power System.November 2019
“12 GW of dispatchable generating capacity is equivalent to the aggregate demand of nearly 6 million new EVs”
“Assuming each EV travels 12,000 miles annually, consuming approximately 300 Wh/mi of AC energy [1], and assuming 4.9 % system losses [14] for transmission and distribution, then each EV will require 3.8 MWh/year of energy generation. For the 2030 low, medium, and high EV sales scenarios, this translates into 1, 8, and 26 TWh of incremental energy generation, respectively. These increases in energy generation are relatively small compared to the 100 TWh range shown in Figure 3. As the figure confirms, historically, there have been periods of time when the grid added in excess of 25 million vehicles-worth of generation per year, the equivalent of roughly 150% of annual new light-duty vehicles sales in the U.S. today [15]. “

Links for April 2023

Tuesday, April 4th, 2023

When President Ulysses S. Grant Was Arrested for Speeding in a Horse-Drawn Carriage. The sitting commander in chief insisted the Black police officer who cited him not face punishment for doing his duty.

Mehdi Hasan Dismantles The Entire Foundation Of The Twitter Files As Matt Taibbi Stumbles To Defend Itby Mike Masnick
Matt Taibbi is a hack and a bullshitter, with receipts.

Downloading a video from an ebay listing

Wednesday, March 8th, 2023

Using Firefox, go to the item page, open the Firefox Web Developer Tools (Menu -> More tools -> Web Developer Tools). Click on the Network tab in the Tools section, then on the web page click on the video and play it.

In the Network tab, requests for audio_128kb-0.m4s to audio_128kb-16.m4s appeared, and video_720p-0.m4s to video_720p-16.m4s. I copied the URL for the video and audio requests (all the same but with a different -0 to -16 segment), and used wget to download the files. Each was 1-2 MB:


After 32 wget commands, the entire video was present. I downloaded segments from 0 up until after number 16, I got a ‘not found’ message letting me know I had the last segment.

Then I concatenated the pieces together:

cat video_720p-0.m4s >> video_720p.m4s
cat video_720p-1.m4s >> video_720p.m4s
cat video_720p-16.m4s >> video_720p.m4s

And the same for the audio segments. I put the cat commands into a batch file “cat.txt” and ran them using “bash cat.txt”.
Then ffmpeg was used to combine them and convert to mp4 format:

ffmpeg -i video_720p.m4s -i audio_128kb.m4s -c copy ebay_720p.mp4