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A comment on Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen resolution. Parent comment

Re:Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen r... by StavrosK on Thursday November 28, 2019 @07:46AM (#21656873)
How do you mean?

> 5GHz WiFi has more bandwidth than 2.4GHz, so typically will involve larger IO buffers in the driver, which could easily be enough to expose a memory scribbler

He's saying 5 GHz will expose the scribbler, and the opposite is happening, only 2.4 GHz fails.

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Re:Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen r... by abainbridge on Thursday November 28, 2019 @11:48AM (#21658645)
@StavrosK Thanks for wading in in my defence, but I had actually mis-understood the situation :-)

Although, if my theory that the IO buffers are different sizes is true, then that could perturb memory layout enough to expose/hide the bug in either direction.

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Re:Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen r... by StavrosK on Thursday November 28, 2019 @11:51AM (#21658666)
Haha, I was actually the attacker in this instance :)

I do agree that the different IO buffers might hide the bug in one instance, but I think this is just plain old RF noise.

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Re:Raspberry Pi 4 WiFi stops working at 2560 x 1440 screen r... by abainbridge on Thursday November 28, 2019 @12:54PM (#21659066)
> Haha, I was actually the attacker in this instance :)

I need more sleep.

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