Hacker News: jtl999

New comment by jtl999 in "Ask HN: How can I secure my AWS instance's SSH access if I have no static IP?"

jtl999 — Fri, 18 Feb 2022 08:20:57 +0000

Unfortunately. I have seen some ISPs DHCP servers assign IPs with no particular subnet(s). Could be a case here as well.

New comment by jtl999 in "Starlink Premium"

jtl999 — Wed, 02 Feb 2022 01:26:44 +0000

I read the current Starlink system has a limitation where if you move outside of your assigned service "cell", you lose service. Guessing this is still the case.

New comment by jtl999 in "Why might you run your own DNS server?"

jtl999 — Thu, 06 Jan 2022 11:09:27 +0000

Fair enough

New comment by jtl999 in "Why might you run your own DNS server?"

jtl999 — Thu, 06 Jan 2022 01:24:08 +0000

I wasn't implying that wildcard records are something entirely incompatible with DNSSEC, more that certain nameserver implementations could potentially have trouble with them.

New comment by jtl999 in "Why might you run your own DNS server?"

jtl999 — Wed, 05 Jan 2022 20:25:01 +0000

To quote from the Slack engineering report

> This indicated there was likely a problem with the ‘*.slack.com’ wildcard record since we didn’t have a wildcard record in any of the other domains where we had rolled out DNSSEC on

I'm not going to stick my hand in either camp for the sake of this discussion, but dynamic/wildcard DNS records are exactly the type of thing I'd suspect DNSSEC to have trouble with

New comment by jtl999 in "rC3 Fahrplan – The Chaos Communication Congress 2021 schedule"

jtl999 — Mon, 27 Dec 2021 13:47:56 +0000

I noticed that too. However there is realtime translation by volunteers, and they seem to do a good job.

https://c3lingo.org/

New comment by jtl999 in "80386DX ISA single board microcomputer"

jtl999 — Fri, 19 Nov 2021 07:27:16 +0000

I guess the idea is if you're studying EE and related fields: "crawl before you can walk"

New comment by jtl999 in "What is this Gemini thing, and why am I excited about it? (2020)"

jtl999 — Tue, 21 Sep 2021 00:53:42 +0000

This. Some standards bodies (arguably) made a big deal about client certificates some time ago to reliably pin client identities for client->server connections (whether it worked is a different story), and I certainly think having functionality for the reverse (pinning server identities) should exist too.

Doesn't have to be Gemini even, but I think getting buy in from browser vendors after the removal of HPKP is going to be a problem...

New comment by jtl999 in "GitHub Discussions is out of beta"

jtl999 — Wed, 18 Aug 2021 19:12:18 +0000

Does SourceHut support other change workflows than just email patches or has anyone else integrated such? (i.e a "PR" style module, Gerrit, etc.)

New comment by jtl999 in "Asahi Linux for Apple M1 progress report, August 2021"

jtl999 — Sat, 14 Aug 2021 19:21:33 +0000

How exactly do you test your own GPU "rendering" under macOS?

New comment by jtl999 in "Laptop Review: ThinkPad X1 Extreme (Gen 2)"

jtl999 — Sun, 06 Jun 2021 18:08:47 +0000

> Except they already do. Also, AMD announced SmartShift ("shifts power inside your laptop for the optimal performance for a given task") support for Linux a couple of days ago. They're more than usable nowadays.

Interesting, thanks!

> Probably a popular opinion here, but any display with a higher res than 1440p (1600p if it's a 16:10 display) is a waste on a laptop. I'd rather have a 1080p one over a 4K one, personally.

I don't disagree that 4k is a little nuts on a ~15" laptop LCD, but it seems until recently you're options for decent >1080p displays on laptops for the most part were a) Macbooks (2880x1800 at 15.4"), and b) 4k PC laptops

New comment by jtl999 in "Laptop Review: ThinkPad X1 Extreme (Gen 2)"

jtl999 — Sun, 06 Jun 2021 06:29:06 +0000

Talk to me when decent laptops with AMD dedicated and/or APU graphics and >1080p IPS displays exist.

New comment by jtl999 in "System76 Developing “Cosmic” Desktop Environment"

jtl999 — Tue, 13 Apr 2021 23:51:08 +0000

I wasn't opposed to the 220dpi of the older Macbook Pros (2880x1800 @ 15.4),but otherwise this is what I want.

New comment by jtl999 in "The Framework Laptop"

jtl999 — Thu, 25 Feb 2021 16:35:21 +0000

I've heard good things about Clevo based designs in the past but even those seem to be questionable now.

New comment by jtl999 in "Don’t format a drive of M1 Macs from recovery mode"

jtl999 — Fri, 19 Feb 2021 00:45:21 +0000

> This all makes me think there is some other microcontroller somewhere that controls the bios flashback process, which would almost certainly be an extra chip.

I believe they just have some sort of extra microcontroller wired to a USB port and the SPI flash chip that stores the BIOS, probably with some sort of switch to ensure the host can't touch the SPI flash when the external microcontroller is attempting to flash it.

New comment by jtl999 in "ECC matters"

jtl999 — Sun, 03 Jan 2021 18:42:05 +0000

> Another issue is motherboard firmware. Even though AMD supplies the memory init code, the configuration can be tweaked by motherboard vendor, and they might simply break ECC support accidentally (even by something as simple as making a toggle default to false then forgot to expose it in configuration menu).

I think some Gigabyte boards are infamous for this in certain circle

OTOH: Gigabyte might have a Threadripper PRO motherboard (WRX80 chipset) coming out in the future

New comment by jtl999 in "The impact of Apple Silicon Macs on Broadway"

jtl999 — Fri, 25 Dec 2020 19:27:11 +0000

IBM POWER9 supports some memory ordering instructions that (as I understand) would in theory be useful for x86 emulation, but a) I'm unsure if anyone actually uses them and b) They are removed from POWER10

New comment by jtl999 in "Rocky Linux: A CentOS replacement by the CentOS founder"

jtl999 — Wed, 16 Dec 2020 19:11:43 +0000

Documented cases don't seem to be common, but what comes to mind is the Debian "weak keys" scandal (2008), and the VLC "libeml" vulnerability (2019)[1]

[1]: https://old.reddit.com/r/netsec/comments/ch86o6/vlc_security...

New comment by jtl999 in "Paving the Way for Electronic Organs-on-a-Chip"

jtl999 — Sun, 29 Nov 2020 12:34:27 +0000

Honorable mention to: https://www.youtube.com/watch?v=m1pchpDD5EU

New comment by jtl999 in "Why Use ECC? (2015)"

jtl999 — Mon, 23 Nov 2020 07:23:24 +0000

Some people claim Gigabyte X570 motherboards in theory have the traces needed for UDIMM ECC, but the (hardcoded) BIOS settings cause the memory to not initialize in ECC mode.