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dcan commented on Tesla Robotaxi misses left-turn and drives into oncoming traffic lane casually   twitch.tv/themayor_mcchee... · Posted by u/haunter
ryandrake · 2 months ago
Video is pretty scary. The software doesn’t even seem to have a remote idea of what commands it should be sending to the steering system, but it sends the commands anyway, causing it to jerk back and forth between “I think I turn here” and “I think I go straight.”

What cities are these garbage cars being tested in, so I can avoid driving, biking, or walking there?

dcan commented on Show HN: Luna Rail – Treating night trains as a spatial optimization problem   luna-rail.com/en/home-2... · Posted by u/ant6n
solardev · 2 months ago
Where do you see the carbon intensity? I just see a plane above a train with a single "250g" figure.
dcan · 2 months ago
I see 15g CO2(eq)/km in the bottom left-hand corner
dcan commented on Modifying an HDMI dummy plug's EDID using a Raspberry Pi   downtowndougbrown.com/202... · Posted by u/zdw
avidiax · 2 months ago
One caveat of these dummy plugs is that they don't do HDCP. They handle the typical use case of forcing a specific resolution output for headless machines rather well, but fail for the use case that you need to run something that expects HDCP.

This seems a good place to ask: does anyone know of a good solution like this HDMI dummy plug, but that negotiates HDCP? I need to test video streaming apps that require HDCP to play at full resolution, but it is inconvenient to have a full TV for every test.

The one solution I've found is an HDMI multiviewer, which seems to negotiate HDCP to each port individually.

dcan · 2 months ago
Terminating HDCP is difficult, you’d have to downgrade it to HDCP 1.4 and then have a 1.4 ‘compliant’ (see: device on the end for it to be a dummy monitor. If you need anything newer than HDCP 1.4, it’s likely not possible.
dcan commented on Office is too slow, so Microsoft is making it load at Windows startup   pcworld.com/article/26517... · Posted by u/airstrike
gibibit · 4 months ago
I still can't believe how slow MS Word is to load a .docx document of about 150 pages of text, you can watch the page count in the status bar grow over a period of 10 seconds or more as it loads/paginates it.

On the plus side, it's nostalgic and reminds me of the old MS Word 6 on Windows 95 (or Windows 3.1?) so that's nice.l

dcan · 4 months ago
Try reading a 40+ page document with track changes enabled (and 100+ changes) - it pins a full CPU core for 5 seconds when you go to the next page!
dcan commented on I think we need a bigger boot partition   blog.fernvenue.com/archiv... · Posted by u/fernvenue
dcan · 5 months ago
Gray text on a black background is an awful colour choice for this website
dcan commented on Half-Life 2 RTX   store.steampowered.com/ap... · Posted by u/NewHatMatt
AdmiralAsshat · 5 months ago
Does this require an NVIDIA GPU to run? Or is a comparable AMD GPU sufficient?
dcan · 5 months ago
I tried Portal RTX on a 9070 XT and got 20 FPS at full resolution (no frame generation). There’s no driver limitations, but I have no idea what the expected FPS is
dcan commented on Rust on the RP2350 (2024)   thejpster.org.uk/blog/blo... · Posted by u/fanf2
sph · 5 months ago
Can anyone explain how the dual ARM/RISC-V system works, architecturally?

Are there two actual CPUs on the same die? Is it one shared architecture with two different instruction decode stages, one for ARM and the other for RISC-V that can be toggled at boot time? I like the idea conceptually but I'm not sure how much of that is a hack and/or inefficient compared to a pure ARM or RISC-V core.

dcan · 5 months ago
To be more precise, four CPUs - two ARM and two RISC. There is just a mux for the instruction and data buses - see chapter 3 of the [datasheet](https://datasheets.raspberrypi.com/rp2350/rp2350-datasheet.p...).

It’s space-inefficient as half of the CPUs are shutdown, but architecturally it’s all on the same bus.

dcan commented on Nvidia's RTX 5090 power connectors are melting   theverge.com/news/609207/... · Posted by u/ambigious7777
Schiendelman · 6 months ago
Then the graphics card would have to have a transformer on it to step down to the voltage that the chips can handle.
dcan · 6 months ago
They already do - most of the components buck the 12V down to the 1.3ish volts that the GPU core needs
dcan commented on HDMI 2.2 is set to debut at CES 2025   tomshardware.com/tech-ind... · Posted by u/thunderbong
gjsman-1000 · 8 months ago
DisplayPort never caught on in the home entertainment market - have you ever seen a DisplayPort TV? And why would there be one, when everyone’s happy with HDMI?

DisplayPort, for most intents and purposes, has lost the format war. You buy a laptop - it’s HDMI on the side, not DisplayPort. You buy a monitor - DisplayPort is never an exclusive port on any model, but HDMI is.

dcan · 8 months ago
I would argue the opposite - DisplayPort has won the computing format war, especially on laptops. Most laptops will have at least two USB-C ports with DisplayPort tunneling. Most business PCs have only DisplayPort connectivity, with the assumption that you'll buy a DisplayPort to HDMI adapter (if you have an older monitor that only supported HDMI).

True, we will never see them on the TV, but on the computer it is all DisplayPort.

dcan commented on Half-Life 2: 20th Anniversary Update   half-life.com/en/halflife... · Posted by u/Philpax
bsimpson · 9 months ago
It's also a $60 purchase that requires a beefy Windows machine in addition to the headset.

VR is a small market to begin with, and most VR people can't play Alyx without buying a whole new computer.

dcan · 9 months ago
Does Half Life Alyx not come with the headset anymore?

u/dcan

KarmaCake day160August 7, 2023
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Canadian Electrical Engineer in Training

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