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btrfs: mismatching generation and generation_v2 found in root item

I am seeing this message in dmesg: btrfs: mismatching generation and generation_v2 found in root item I found a related question here: Understanding btrfs dmesg However, unlike that question, I ...
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Virtual kernel memory layout in dmesg linux kernel 2.6.31

I'm working on a embedded linux project for ARM architecture, kernel version is 2.6.31.12-rt21. In dmesg, I cannot see the virtual kernel memory layout like this: virtual kernel memory layout: ...
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How can I find out if a problem with the USB ports in my laptop is due to hardware or software?

A few days ago, the USB ports in my laptop stop working. At first, I thought it might be due to a recent update of my OS (Ubuntu 14.04), so I began testing if something came up when connecting a ...
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Cannot mount USB 3.0 Flash drive

I have a 16GB USB 3.0 thumb drive that has worked wonderfully up until two days ago... When ever I plug it into a USB3.0 slot: The light flickers indefinitely; Nautilus shows the Open/Eject popup ...