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I'm the OP of the askubuntu question linked in the bug. It's hard to tell how I got it to work, but my recommendation would be: sudo dpkg -i ubuntu-drivers-common_0.2.91.5_amd64.deb nvidia-common_0.2.91.5_amd64.deb sudo apt-mark hold ubuntu-drivers-common sudo apt-mark hold nvidia-common sudo apt-get purge nvidia* bumblebee* sudo apt-get install ...


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You might try to restore the original /usr/lib/xorg/modules/extensions/libglx.so from xserver-xorg-core . That's what I did in a similar situation. Here's how: First confirm that it has indeed been replaced by the nvidia install: debsums xserver-xorg-core | grep libglx.so If it shows FAILED, it means that it has actually been replaced, and you could try ...


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Trying it can't do any harm. Use the following command before and after the switch. >ou should see a drop/rise in mW being used: # grep rate /proc/acpi/battery/BAT0/state switch off your NVIDIA card using # echo OFF > /sys/kernel/debug/vgaswitcheroo/switch If your laptop now uses less mW, then you get a longer battery life.



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