mjg59

12 ms·

151.
by mjg59 1y ago
"Someone" here is Apple - this is the Apple manpage for a Tahoe feature
152.
by mjg59 1y ago
It's not super easy under Windows and it would likely disable dGPU power management. Easier to patch the DSDT not to send those notifications (although that's still not super easy under Windows)
153.
by mjg59 1y ago
Likely able to identify that it's entering SMM, unfortunately not able to demonstrate what it's doing inside there.
154.
by mjg59 1y ago
There's a lot of good work here and I don't want to minimise the issue in any way but: unless the Windows ACPI stack is implemented in an extremely fucked up way, I'd be surprised if some of the technical conclusions here a
155.
by mjg59 1y ago
The nominal idea is that having them come straight out encourages people to remove plugs by pulling on the cord, which introduces even more strain than having a curved wire - although maybe this ends up being an argument to mount UK sockets
156.
by mjg59 1y ago
Some additional context that isn't really covered in the readme - there are two components in the Amiga chipset that are especially relevant here, the copper and the blitter. The copper (named because it's a coprocessor) is a sepa
157.
by mjg59 1y ago
No, it would likely be extremely illegal for anyone in the US to do so
158.
by mjg59 1y ago
Actually easier to remove the license restrictions around their RTSP backup software than it is to set up an equivalent thing myself (Edit: I have a very particular set of skills. Having put some time into making this work with tools I coul
159.
by mjg59 1y ago
Synology are bad at technical restrictions. That doesn't help most people, and it's not any sort of defense, but anything they strongly attempt to impose here is going to fail. It took me an evening to break the protection they im
160.
by mjg59 1y ago
You made the assertion that basebands remain in contact with towers even in airplane mode, and so can be tracked. Someone asked for supporting evidence for that claim. You've responded with examples and links to different issues. It&#x
161.
by mjg59 1y ago
The CPU attests what it booted, and you verify that attestation on a device you trust. If someone boots a shim instead then the attestation will be different and verification will fail, and you refuse to give it data.
162.
by mjg59 1y ago
Laserdisc will output 480i rather than 240p (it's just an encoding of the NTSC signal) and lag isn't really an issue, and the linked page doesn't really cover the other advantages. I can imagine that a TV's scaler isn&#x
163.
by mjg59 1y ago
Which OSes are actually imposing DMA restrictions on internal cards? That feels like something that would impose noticeable overhead, but I guess I can imagine a special mode that enforces this for competitive gaming...
164.
by mjg59 1y ago
"Ask a VP.NET server for the fingerprint it reports" is a little bit simplistic. The process for actually doing this involves you handing the server a random number, and it sending you back a signed statement including both the fi
165.
by mjg59 1y ago
I'm a huge fan of the technical basis for this. I want services to attest themselves to me so I can verify that they're running the source code I can inspect. And, well, the combination of founders here? Good fucking lord. I&#x2
166.
by mjg59 1y ago
Hmm actually the Copper probably isn't fast enough for this - it takes about 8 pixel scanout equivalent to update one register, and hblank isn't going to be large enough to update all of them. But Copper's performance is rest
167.
by mjg59 1y ago
Given there's no need to run any code on the 68K bus it's probably actually possible to do the palette calculations per line and use the copper to reprogram the colour registers every line, getting way more colours than plain EHB
168.
by mjg59 1y ago
I considered this and it's slightly awkward - the hardware isn't memory mapped so the drivers would all need to be adapted, and there's no realistic way it'd get upstream. There's also the problem that the Amiga is
169.
by mjg59 1y ago
The GOP driver is provided by the card, and then exposes a standardised interface to the firmware.
170.
by mjg59 1y ago
I don't understand what "UEFI starts the boot process" means? The firmware is what initialises the hardware. If the code needed to initialise your GPU doesn't have a trusted signature then it won't be executed, and
171.
by mjg59 1y ago
There was a period where Microsoft was attempting to treat Windows on ARM devices in the same way as Apple treats iPads. That's not how things are now, and the walkback on that doesn't support the argument that the goal is to lock
172.
by mjg59 1y ago
Actually no - modern Windows on ARM devices have the same level of secure boot control as x86 ones.
173.
by mjg59 1y ago
Not like that, you can't. Firstly, that's not a KEK cert - the KEK cert is "Microsoft Corporation KEK CA 2023". And secondly, mokutil manages the MOK database, not the firmware database. MOK keys control what shim will t
174.
by mjg59 1y ago
Vouched for the parent because it's a reasonable question. As well as the new root certificates in db, which are used to decide whether signed code will execute or not, there will be a new signed Microsoft key for KEK. This isn't
175.
by mjg59 1y ago
The driver that initialises your plug-in GPU is shipped in flash on the card, is signed by Microsoft, and won't run unless that signature validates.
176.
by mjg59 1y ago
Linux distributions have been shipping with secure boot support since 2012, so if that was the goal it had already failed over a decade ago.
177.
by mjg59 1y ago
The rollover coincides with stronger security policies for signed objects (enforcing code being read-only, that kind of thing) and people with stronger security requirements can remove trust in the old certificate to enforce that. Code has
178.
by mjg59 1y ago
That's the easiest, but it's a pain if you want to switch cards
179.
by mjg59 1y ago
Re-signing option ROMs is not trivial (or, well, it's easy to do the signing, it's not necessarily easy to flash that driver back into the card)
180.
by mjg59 1y ago
First up: this isn't criticism of the original post in the slightest, it's a wonderful journey through figuring out how a weird device that wants to be on your wifi works. If you have a device that speaks to an Android app, you wa

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