• 2 Posts
  • 10 Comments
Joined 1 year ago
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Cake day: June 16th, 2023

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  • No, hibernation saves state to disk, and turns the computer off, drawing no power. Deep sleep is what was for me just sleep until recently: it uses power to keep data in ram, so it’s faster to wake up than hibernation. The amount of power used is really small, so unless you don’t use your lap top for a couple of days, it won’t deplete the battery. New hardware has this new “S2 Idle” state, that is basically an “On” state minus the screen and it’s OS’s job to try to use as little power as possible usually by telling each and every device to chill as much as possible (this is my understanding, but don’t quote me on this). On Windows, with the first party device drivers, this sorta works OK + OS drops to deep sleep or hibernation depending on battery or something.


  • It’s 2021 Lenovo ThinkBoot 15 G2 Intl with Intel i3-1115G4, 8GB onboard ram, integrated GPU and two NVME slots.

    Here are some lines from dmidecode if they mean anything to anyone:

    Getting SMBIOS data from sysfs.
    SMBIOS 3.3.0 present.
    Handle 0x0000, DMI type 0, 26 bytes
    BIOS Information
            Vendor: LENOVO
            Version: F8CN42WW(V2.05)
            Release Date: 06/28/2021
            Address: 0xE0000
            Runtime Size: 128 kB
            ROM Size: 16 MB
            Characteristics:
                    PCI is supported
                    BIOS is upgradeable
                    BIOS shadowing is allowed
                    ACPI is supported
                    USB legacy is supported
                    BIOS boot specification is supported
                    Targeted content distribution is supported
                    UEFI is supported
            BIOS Revision: 2.42
            Firmware Revision: 2.42
    
    Handle 0x0001, DMI type 1, 27 bytes
    System Information
            Manufacturer: LENOVO
            Product Name: 20VE
            Version: ThinkBook 15 G2 ITL
            SKU Number: LENOVO_MT_20VE_BU_idea_FM_ThinkBook 15 G2 ITL
            Family: ThinkBook 15 G2 ITL
    
    Handle 0x0002, DMI type 2, 15 bytes
    Base Board Information
            Manufacturer: LENOVO
            Product Name: LNVNB161216
            Version: SDK0J40700 WIN
    







  • I must admit that I’m disappointed with this article. It’ fairly standard “why isn’t X used in a field A” and the answer is: we’ve always used Y, so all libraries and tooling assume Y, and things are slow to change around here anyway. There is nothing specific to Rust, and the only semi-specific thing to embedded programing is noting the reliance on vendor provided libraries. I wouldn’t be surprised if it was generated by ChatGPT.