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I met the same problem with the ACER Aspire One of my daughter. rfkill list revealed that Wireless LAN is Hard blocked. Using sudo rfkill unblock 0 (0 referencing Wireless LAN in above list) solved the issue !


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Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? This usually means you have another window open somewhere that is running updates or installing software. You can only run one dpkg process at a time. Ensure that other operations ...


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I am unsure about the changes that you are doing to grub and trying to install xbacklight. But there are some good guides out there. An article from itsfoss worked for me. Before you try out the article, open up terminal and key in acpi_listen and then press your fn+up and fn+down key combinations to check whether your brightness keys are actually getting ...



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