Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen resolution

Re:Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen r... by shakna on Thursday November 28, 2019 @02:02AM (#21655189)

There's several small scale WiFi chips that share clock source with USB - it would be unsurprising to find that the WiFi and video interface are sharing the same clock, so drawing too much from either could directly effect the other.

These kinds of problems are common in embedded computers, like the Pi. Just as common as software.

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Re:Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen r... by londons_explore on Thursday November 28, 2019 @11:24AM (#21658424)

Clocks will all be buffered due to physical distance between the GPU and WiFi IP core on the SoC so it's unlikely to be a clock loading issue.

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Re:Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen r... by shakna on Thursday November 28, 2019 @07:24PM (#21661057)

Buffering isn't really the problem I was talking about, it was more the shielding of the clock.

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