A €40 Cable Matters USB-C hub already supported charging and DisplayPort Alt Mode, but the Nintendo Switch 2 would not display through it because the console expects a proprietary dock handshake. Using a USB-PD sniffer, the author recorded exchanges with the official dock, then modified the hub’s VL103 controller firmware to respond to Nintendo’s vendor-specific messages. The Switch required more than the correct vendor ID: copying the official dock’s full identity enabled TV mode, while matching additional version replies removed a three-second delay. The copied version data is only an imitation; unrecognized commands still receive the hub’s standard unsupported response.
The picture worked, but HDR looked washed out. Investigation traced the problem to the hub’s RTD2142 DisplayPort-to-HDMI converter, which sent a BT.709 color label even when the Switch’s HDR output needed BT.2020. A small firmware patch now marks HDR video correctly and refreshes the HDMI color information when HDR changes, restoring accurate color; the hub’s DisplayPort output remains unfixed. The author also investigated variable refresh rate, but the converter lacks VRR support, and attempts to enable it caused the picture to freeze or remain at 60 Hz. Making VRR work would require substantial changes to the converter’s timing behavior, so the project ends with a portable dock that supports regular video and corrected HDMI HDR, but not VRR.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.
China’s battery-swapping stations let electric truck drivers replace depleted batteries in minutes instead of waiting to recharge, easing range and downtime concerns. CATL plans 2,000 stations across China by the end of 2027 and hopes to expand the technology to Europe. (theguardian.com)
The FAA grounded all departing flights nationwide until 11 p.m. after citing safety concerns and communications issues, while allowing planes already airborne to land. Officials said there was no evidence of a cyberattack; experts raised a possible connection to a new AI-supported air traffic system rollout. (thedailybeast.com)
![I Built a $300 Robot Hand With 18 Motors [video]](https://hntoday.pixelshot.io/screenshots/20261114/1c8751ab7cf044ab_tn.jpeg)
A maker built a robot hand with 18 motors for about $300. The provided page contains no details about how it works. (youtube.com)
A commenter says Elon Musk should hire Jensen Huang to run Terafab. They offer no further details about what the project would build. (news.ycombinator.com)
SpaceX launch debris halted all flights between Hawaii and the West Coast, according to the Hawaii Department of Transportation. Interisland flights continued, and travelers were urged to check with their airlines for updates. (hawaiinewsnow.com)
The Denny’s where Nvidia was founded has removed a sign celebrating the company. The change comes as fallout surrounding Nvidia CEO Jensen Huang deepens. (nbcnews.com)
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