Kali Linux Now Available for Raspberry Pi 4

Yolanda Curtis
July 10, 2019

In theory, all USB-C cables are created equal, but we all know it's not quite that simple; the rollout of the standard has been beset by quirks and confusion, and it looks like the Pi 4 has fallen foul. The Raspberry Pi Foundation confirmed to TechRepublic that the design flaw is real and that your Raspberry Pi 4 might not work with all USB-C cables.

E-marking is a technique which gives a cable a digital signature based on what the cable is going to do.

The bad news is that there's not a lot the team can do about this until the next hardware revision - the quirk is built into the hardware. Older chargers with USB-A to USB-C cables, or micro-USB to USB-C adapters, should also work if they supply enough power in the first place. However, you may anticipate a future board revision with proper implementation of the USB-C protocol. "Instead of trying to come up with some clever circuit, hardware designers should simply copy the figure from the USB-C Spec exactly", wrote Leung. Starting at $35, the Raspberry Pi 4 has a more powerful Broadcom BCM2711 chip with four ARM Cortex A72 CPU cores at 1.5GHz.That chip can decode 4K videos at 60fps using HEVC/H.265, render OpenGL ES 3.0 graphics, and output 4K video to a monitor via micro HDMI.

The Raspberry Pi 4 has been lauded for its improved specs while keeping the low price tag of the original.

As an illustration, you should utilize a MacBook Pro charger with loads of USB-C devices.

According to Upton, the new Raspberry Pi 4 doesn't receive power when used with electronically marked or e-marked USB-C cables. He explains that from a technical perspective, the USB-C specification defines two pins called CC1 and CC2 for connecting to the power sink in a specific way. "The Raspberry Pi 4 is actually a pretty fantastic little machine", said Offensive Security.

In order for a USB-C connection to work as intended with all USB-C cables, the Type-C connector needs to use two independent CC resistors. Options include using a USB-C phone charger, or picking up the official Raspberry Pi USB-C power supply for $8.

An easy workaround is to buy a non-e-marked cable or charger.

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