Cadwhisker
Joined 9 years ago
Joined 9 years ago
1. Check the power rails are correct and stable (at the target devices, not the PSU source)
2. Check the resets are correct (polarity, level, sequencing) and reaching where they're needed
3. Check the clock is toggling cleanly (no jitter, has clean monotonic waveform)
4. General signal integrity and setup/hold of signals that are related to the issue
That catches a lot of basic issues. If those are all clean, then you go deeper.
To the article author's suspicion of crystals, I have seen crystal oscillators fail (stopping toggling) as ambient temperature ramps up and down; that's a nasty one to catch and prove, but it can happen. Changing vendor was the only solution there.
This add-on violates Mozilla's add-on policies by collecting user data without disclosure, consent or control and executing remote code
The landing page mentions Plan 9 as one of the systems.
I was trying to find the root cause of a crash in a Python module which left no errors in the log or console. Fable wrote a test harness that simulated clicks in the UI, then bisected my code until it found the point where it started crashing. It exaggerated the cause of the crash, then ran a series of bash one-liners to make Python virtual environments under `/tmp` for each version of that Python module until it found one that did not crash.
It went way deeper to root cause discovery (a regression in the module causing a heap allocation overflow) than I could have done myself, provided enough info and a simplified example to raise a bug report and then wrote a work-around to prevent that from happening in my application.
I don't let it run completely loose; I review each CLI command it wants to run and I append answers to the "yes" continue action (if I have them) to prevent excessive token use.
HN comments page on that is here: https://news.ycombinator.com/item?id=40219205
I hadn't noticed his Miscellaneous Fiction section, so this is a nice rabbit hole to find.
https://www.mattkeeter.com/blog/2022-08-11-udp/probes_full.j...
https://web.archive.org/web/20260920202324/https://www.dxoma...