Hacker News: dcomp

New comment by dcomp in "When I say “alphabetical order”, I mean “alphabetical order”"

dcomp — Sun, 28 Sep 2025 16:18:22 +0000

I think the algorithm is probably incorrect. A number starting with 0 should be treated lexically not numerically. Otherwise you have a situation where img_1_01.jpg and img_01_1.jpg does not have a complete ordering.

New comment by dcomp in "FCC wants all phones unlocked in sixty days, AT&T and T-Mobile aren't so keen"

dcomp — Sun, 22 Sep 2024 07:47:53 +0000

there's a setting in the developer options called OEM unlock which allows the bootloader to be unlocked

It is still shipped locked. Unlocking wipes the device.

It also doesn't work if your device is carrier locked.

New comment by dcomp in "A bold new look for the Gov.uk homepage"

dcomp — Wed, 01 Nov 2023 13:19:04 +0000

I think the plan is for each GP's prescribing system/appointment system to export enough data that you can just use the NHS app for your needs. i know I can book appointments through it. Obviously doesn't help when the GP is still sifting through paper records. But those are few and far between.

New comment by dcomp in "Why ACPI?"

dcomp — Wed, 01 Nov 2023 13:08:29 +0000

I'm only slightly familiar with the specific features ACPI provides. But isn't the solution the following

For every "feature" provided by the SMM or bios.

Export a UUID ( eg NVME resume implementation1) Have that feature have an enable and disable function. Have each feature have a dependency on each iorange / firmware device it needs access to.

If the kernel know how to implement the feature it can just disable the feature and then as long as it follows the dependency tree and can see nothing else accesses those ranges. It can know that it has exclusive use. If it doesn't have exclusive use it must use the firmware to access those ranges if possible or fall back to no support

If the firmware has a feature without a disable function. The kernel knows it can never access that hardware directly/safely.

You could even have a "lock device" that if you take you know that SMM won't access those io ranges whilst you have the lock.

Obviously this all requires vendor support

New comment by dcomp in "Aspartame sweetener to be declared possible cancer risk by WHO, say reports"

dcomp — Fri, 30 Jun 2023 07:28:35 +0000

I thought there was already common terminology for probability of side effects [0]

Very common = greater than 1 in 10

Common = 1 in 100 to 1 in 10

Uncommon [formerly 'less commonly' in BNF publications] = 1 in 1000 to 1 in 100

Rare = 1 in 10 000 to 1 in 1000

Very rare = less than 1 in 10 000

Frequency not known = frequency is not defined by product literature or the side-effect has been reported from post-marketing surveillance data

[0] https://bnf.nice.org.uk/medicines-guidance/adverse-reactions...

New comment by dcomp in "Outlook now ignores Windows' Default Browser and opens links in Edge by default"

dcomp — Tue, 27 Jun 2023 17:55:00 +0000

I'm getting office365 nagging me to change the pdf viewer on android after each download in chrome about 15 minutes after the download. Can't find the setting to stop it.

New comment by dcomp in "Framework Laptop Cupholder Expansion Card"

dcomp — Wed, 03 May 2023 07:43:22 +0000

For those wondering, this is a joke from the LTT WAN Show [0]

[0] https://www.youtube.com/live/CSOF8RFrihM?feature=share&t=982...

New comment by dcomp in "Surpassing 10Gb/S over Tailscale"

dcomp — Thu, 13 Apr 2023 20:03:06 +0000

I've switched to tailscale because their nat busting is actually hard to do "by hand"

New comment by dcomp in "The FTC wants to ban tough-to-cancel subscriptions"

dcomp — Thu, 23 Mar 2023 16:56:43 +0000

Most likely an early disconnection fee during the minimum term. Nearly everyone has a minimum term with virgin media as they only apply promotional discounts if you have a 12,18 or 24 month minimum term and the price shoots up as soon as you roll over onto the monthly.

[1] https://www.virginmedia.com/legal/fibre-optic-services-terms...

New comment by dcomp in "Let's Encrypt now supports ACME-CAA: closing the DV loophole"

dcomp — Sun, 18 Dec 2022 17:00:04 +0000

Technically they could force root nameservers (based in the US) to intercept/proxy the whole gtld.

So all except n (netnod (EU)) and i (WIDE (JP))

New comment by dcomp in "Rust in the Linux Kernel: Just the Beginning"

dcomp — Tue, 25 Oct 2022 08:40:34 +0000

> The only thing that concerns me now is the Rust code in kernel is not GPLv2. Not sure if that's intentional.

The only code that isn't GPLv2 is the alloc crate. Which is basically a copy of upstream with some changes. All the kernel specific stuff is GPL

New comment by dcomp in "A pair of Linux kernel modules using Rust"

dcomp — Tue, 13 Sep 2022 10:54:07 +0000

From what I understand a rust panic will just call BUG(). There is no support for unwinding as such.

Most likely you would have to use .get() which returns an Option rather than [] array index which panics.

New comment by dcomp in "New UK data laws could be incompatible with GDPR in the EU"

dcomp — Thu, 21 Jul 2022 09:54:10 +0000

It's quite scary that the House of lords (unelected peers), previously seen as undemocratic may be the only thing stopping the commons from rushing through legislation as they don't have to pander to public option. Which I guess was always their purpose

New comment by dcomp in "Why rails buckle in Britain"

dcomp — Sat, 16 Jul 2022 17:24:01 +0000

To be fair they have been monitoring deaths before [0], just the first time there's a national warning to the public.

Quite a few schools have decided to use this warning to close as they are unable to manage heat on their premises [1]

[0] https://www.gov.uk/government/publications/phe-heatwave-mort...

New comment by dcomp in "Why rails buckle in Britain"

dcomp — Sat, 16 Jul 2022 17:08:35 +0000

And for further context its the first RED (danger to life) warning [0] (for the purposes of heat, other red warning have been issued [1])

[0] https://www.metoffice.gov.uk/about-us/press-office/news/weat... [1] https://www.metoffice.gov.uk/weather/learn-about/past-uk-wea...

New comment by dcomp in "Upwork asking me for a $12.5k refund as the client was using someone else’s card"

dcomp — Sun, 09 Jan 2022 17:48:04 +0000

Probably because you can't dispute for any reason. But if there wasn't enough notice. If you don't give 10 working days notice (unless initiated by the person). An immediate refund can be requested.

Bad service isn't a reason for a refund. And if the person doesn't say "This debit was in error. I wasn't given notice" or similar the bank will usually say this is a legitimate direct debit [0] https://www.directdebit.co.uk/DirectDebitExplained/pages/dir...

New comment by dcomp in "Update on Linux hibernation support when lockdown is enabled"

dcomp — Sat, 01 Jan 2022 19:01:35 +0000

In a high security situation. It would not be a password, but a smartcard which authenticates the device before providing its key, and the device authenticating the smartcard.

Edit: For the purposes of the Networked Evil Maid Attacks. Mutual Authentication (of device and user) is currently the purpose of research. It has not needed to be implemented yet as the regular Evil Maid is still possible due to the fact that Secure Boot is currently the easier target to circumvent. Once Secure Boot becomes harder to circumvent and old "assumed" buggy kernels are revoked from running. Networked Evil Maid counter measures will need to be implemented as standard

New comment by dcomp in "Update on Linux hibernation support when lockdown is enabled"

dcomp — Sat, 01 Jan 2022 18:50:33 +0000

You have a disk encrypted laptop. That key is protected by a password.

Secure boot means that when you log in you can trust that the disk decryption screen is not a disk encryption key exfiltration screen waiting for you to enter your password so that a disk backup taken earlier can be decrypted.

How?

The disk encryption is based on a key in the TPM which only is decrypted with your password. That TPM gets wiped when you disable secure boot. The result is that when you enter your password either you get a correct decryption key or your disk encryption key has already been wiped. Assuming it's not possible to run untrusted code before the disk encryption key login screen with secure boot enabled.

kernel lockdown is part of the parcel for making sure that untrusted code does not run that can exfiltrate the disk decryption key.

New comment by dcomp in "I had to give a wrong answer to get the job (2017)"

dcomp — Mon, 19 Jul 2021 21:19:27 +0000

For the record. Most analog clocks have smooth motion for minute and hour (for the precision of the gearing). Its the second hand that ticks.

New comment by dcomp in "Steve Wozniak backs right-to-repair movement"

dcomp — Fri, 09 Jul 2021 13:48:12 +0000

I was just about to comment about this video that was in my feed.

Louis Rossman publicly asking Steve Wozniak to back right to repair because it's faster than finding someone in his social circle etc to pass the message