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Cake day: June 30th, 2023

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  • My laptop did not go to sleep

    Some people have similar experiences regarding sleep issue, including system just went blank on wake up.

    From my experiences on Linux Mint in two different laptops, the sleep issue related to Linux system cache. By default, many Linuxes use these settings, vm.dirty_ratio and vm.dirty_background_ratio are about 5 to 20 percent of the available system memory. This is fine if your system has less than 4GB of memory installed, but if your system has 8GB or more of memory, this can cause problems later on.

    So I have this “can’t wake up” issue on my two differents laptop, the first laptop has 8 GB of memory and the second laptop has 16 GB. And both laptops are running on Linux Mint.

    In search of a solution, I came across this conversation https://lkml.org/lkml/2013/10/25/39

    I also found some possible system cache related issues on various distros.

    So I tried what Linus suggested, and I use lower values than suggested. And it worked!, the “can’t wake up” issue on both laptops just gone in instant!














  • According to EFF in the article

    Do not wipe your phone

    You might think the most protective options are to completely wipe your phone before traveling, use a burner or travel without a phone. But the EFF’s Cope said that could actually raise suspicions.

    “People are damned if they do and damned if they don’t,” Cope said. “If you cross the border with no data on your device, that itself can be seen as suspicious.”

    Instead, if you want to seem cooperative but do have data or texts stored on your phone that you wouldn’t want to be accessed, Cope suggests deleting that information selectively rather than wiping your whole device.