Top all-time · #20408
Christian Kohlschütter
Personal blog · kohlschuetter.github.io/blog · on HN as kohlschuetterhardwaresystems
Christian Kohlschütter's personal blog at kohlschuetter.github.io covers hardware and systems. Since 2022, 3 different Hacker News readers have linked it 13 times, most often “Linux 6.1 on NanoPi R4S – On fixing SD-card support, Heisenbugs and Rabbit Holes”. It is still writing: the last post was on 2026-06-07, and you can follow it by feed.
Too few sampled comments (1) to say how often HN recommends it.?
Why HN links it
One HN comment compares the post to a story about debugging a hanging U-Boot when booting from 1.8V SD cards, involving a kernel boot-delay patch. The post itself is about booting Linux many times.
Summarised by Claude from a sample of 1 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Dr. Christian Kohlschütter
Most-linked posts?
- Linux 6.1 on NanoPi R4S – On fixing SD-card support, Heisenbugs and Rabbit Holes2 people · 2 mentions · first linked 2022-10-28
- Reliable 25 Gigabit Ethernet via Thunderbolt2 people · 2 mentions · first linked 2026-01-27
What Hacker News says?
You can also use a BananaPi BPI-R3 for reprogramming. And you can “upgrade“ 10 Gbit/s DACs to 25 Gb/s. Details here https://kohlschuetter.github.io/blog/posts/2026/03/22/unlock...
Comment linking /blog/posts/2026/03/22/unlock25/
on “10Gb/s Ethernet: switching to a Broadcom SFP+ module”Submitted Linux 6.1 on NanoPi R4S – On fixing SD-card support, Heisenbugs and Rabbit Holes as a story · 174 points
HN discussionThis reminded me of another story [0] (discussed on HN [1]) about debugging hanging U-Boot when booting from 1.8 volt SD cards, but not from 3.0 volt SD cards, where the solution involved a kernel patch that actually introduced a delay during boot, by "hardcoding a delay in the regulator setup code (set_machine_constraints)." (In fact it sounded so similar that I actually checked if that patch caused the bug in the…
Comment linking /blog/posts/2022/10/28/linux-nanopi-r4s/
on “I booted Linux 292,612 times”Submitted AI Slop Meets Google, or How to Really Install GlusterFS on Alpine Linux Latest as a story · 6 points
HN discussionMany 10GbE DACs can be hacked to run 25GbE, which is something I had to figure out after realizing that it’s not just plug and play as it was with twisted pair cables coming from 1Gb to 2.5Gb… https://kohlschuetter.github.io/blog/posts/2026/03/22/unlock...
Comment linking /blog/posts/2026/03/22/unlock25/
on “What Is a Direct Attach Copper (DAC) Cable”Submitted Unlocking 25 Gigabit/S on 10 GbE Direct Attach Copper as a story · 3 points
HN discussionSubmitted Faster Reed-Solomon Erasure Coding in Java with Go and FFM as a story · 3 points
HN discussionSubmitted xcesp: Developing for ESP32 Devices with Xcode as a story · 2 points
HN discussionSubmitted The Serial TTL connector we deserve as a story · 2 points
HN discussionSubmitted Realtek's 10GbE NIC performance revisited as a story · 2 points
HN discussionSubmitted Reliable 25 Gigabit Ethernet via Thunderbolt as a story · 1 points
HN discussionSubmitted Reliable 25 Gigabit Ethernet via Thunderbolt as a story · 1 points
HN discussionSubmitted junixsocket: Unix sockets API for Java; a long story short as a story · 1 points
HN discussion