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There is a known issue about this kind of HDMI audio detection issue when the laptop is booted without the charger. The power saving stuff sometimes make the detection not working. One easy way to verify this is to forcibly (harmless, don't worry) play a sound with command-line commands, assign the output to the HDMI port even if it's not in your sound ...


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I have connected ultrawide monitor by HDMI with Modeline "2560x1080_40.00" 147.25 2560 2680 2944 3328 1080 1083 1093 1108 -hsync +vsync I used: cvt 2560 1080 40 HDMI did not support > 165 Mhz, however HDMI 1.3 supports up to 340 MHz maximum pixel clock rate wiki.


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The controller certainly makes a difference: Putting a trimable SSD into an external USB3 enclosure will result in the same error you are getting.


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This sysfs output looks fine, you are looking in the wrong place, it's the graphics card. As you can see all scaling governors are renamed to powersave and I think that means my Haswell i5 4200U processor rus all the time at maximum frequency. That would be the performance govenor, powersave stands for conserve power. The ondemand govenor is not ...


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See "Usage and Interfaces" section in the intel_powerclamp manual. First, locate the abstract "thermal device" corresponding to the power consumption control loop: # grep -Rn intel_powerclamp /sys/class/thermal ... /sys/class/thermal/cooling_device11/type:1: intel_powerclamp # cd /sys/class/thermal/cooling_device11 Now, the "slowdown" percentage of the ...



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