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powertop needs to be calibrated on mobile devices, specifically including your Intel i5-5300U CPU.


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I had a similar issue after installing Manjaro XFCE recently. Had to hard reset my computer each time it went to sleep as the screen would have frozen. Yesterday I switched from the nouveau to the Nvidia driver and since then haven't had this issue.


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Pin 1 is V_BUS, +5 V. Take a USB cable and horribly mangle it, to insert a 1-ohm resistor inline with the pin 1 conductor. Run your USB workload and measure voltage drop across the resistor with a DMM or similar. V = I * R and P = I * V, so with R = 1 the millivolts you read will be identical to the milliamps drawn by the device, and power will be five ...


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