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After installing Ubuntu 16.04 on my laptop, I could do without the option to start acpi = off. This causes loss control battery, wifi, screen brightness and sometimes left running only one processor core ... I tried with all related startup options acpi, backlight, and others, but only acpi = off allows startup. Otherwise it freezes during the systemd. I already tried previously installed with ubuntu 14.04, 15.04, 15.10, and had the same problems. I bided 16.04, but has not improved the problem. Someone can help me? Thanks

JRP
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1 Answers1

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Try to boot holding the shift key. choose recovery mode at prompt. Once in recovery, do an update Grub.

once done, back to the main menu, ro Resume. It should boot.

It happens to me to.

hpiedcoq
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