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  • Unstable Wifi and cabled net with Ubuntu install

    From Jesper Kaas@21:1/5 to All on Sun Oct 15 15:54:02 2023
    Hi

    I have been runnning Ubuntu on a Raspberrypi4 with 8 GB RAM for
    something like a year and a half. Mostly for checking email and
    browsing for news when my wife has grabbed the PC. Version of Ubuntu
    is now 22.04.3 LTS. The system is running on a 128 GB SSD that
    formerly was main disk in a PC, but became too small.
    This has been running as you can expect from a Raspberrypi, OK but a
    litlle slow with browsing the net.
    Lately it has become unbearably slow. The wifi almost never works. It
    sees my router (shows the SSID) but seldom connects. This is with the raspberrys integrated wifi, and also with a USB-connected
    wifi-adapter. The usb-wifi has a control light that does some flashing
    when establishing connection, and then constant light. This
    usb-wifi-adapter shows now no light at all when connected to the
    Raspberry running Ubuntu, but works fine when the raspberry is running Raspberrypi OS from a SD-card. Also works fine when connected to a PC. Cable-connected net works better, but seems much slower than before.
    I also sometimes sees the cursor lagging behind, but not sure if this
    os new.
    This trouble happens only when running the Ubuntu install from SSD.
    When running Raspberrypi OS everything is up to speed. Browsing works
    as fast as the Raspberrypi can manage, and I see ip-adresses for
    cable, integrated wifi and wifi-adapter when all are plugged in. So I
    think the raspberrypi hardware is OK.

    So a guess is that the SSD has developed bad sectors. Is there a way
    of running tests for the SSD within Ubuntu? I have not tried to test
    it from a PC yet. I have an idea that the PC can damage the
    filesystem, but that is maybe not so?
    Sorry, but I am not very familliar with Linux, but have of course been
    using Terminal for commands.

    Any suggestions are most welcome :-)

    Beste regards
    --
    Jesper Kaas - [email protected]

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  • From Marco Moock@21:1/5 to All on Sun Oct 15 19:11:48 2023
    Am 15.10.2023 um 15:54:02 Uhr schrieb Jesper Kaas:

    So a guess is that the SSD has developed bad sectors. Is there a way
    of running tests for the SSD within Ubuntu?

    badblocks can be used, but make sure you only use read operations
    unless you want to wipe the disk.
    Also check the SMART values.

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  • From Jesper Kaas@21:1/5 to All on Sun Oct 15 21:13:02 2023
    On Sun, 15 Oct 2023 11:22:34 -0700, Mike Easter <[email protected]d>
    wrote:

    Marco Moock wrote:
    Also check the SMART values.

    In Ub, disks can do that graphically; select the disk and the menu has a >SMART data and self-tests item that shows 13 smart attributes and their >assessment w/o even doing any self-tests.

    I mention it because I had never seen it :-)
    Thanks. You write "In Ub, disks can do that raphically". I take it
    "Ub" means Ubuntu. Where in Ubuntu should I see the D disc? In teh
    program "Files"? Here I only see files and folders, not discs, and I
    find no possibility to see the SMARTdata, not by right-click and not
    in any menus. Please help an ignorant idiot :-)

    By the way, I tried to use the fsck command. The command would not run
    on a mounted discs, and I was told to reboot while holding shift, to
    arrive in a spesial repair menu. However, holding down Shift or both
    Shift-keys only resulted in normal bootings.
    Also tried the command "badblocks in Terminal. It ran for appr. 10
    minutes and found no errors.

    Best regards
    --
    Jesper Kaas - [email protected]

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  • From Mike Easter@21:1/5 to Marco Moock on Sun Oct 15 11:22:34 2023
    Marco Moock wrote:
    Also check the SMART values.

    In Ub, disks can do that graphically; select the disk and the menu has a
    SMART data and self-tests item that shows 13 smart attributes and their assessment w/o even doing any self-tests.

    I mention it because I had never seen it :-)

    --
    Mike Easter

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  • From Mike Easter@21:1/5 to Jesper Kaas on Sun Oct 15 12:59:54 2023
    Jesper Kaas wrote:
    Mike Easter
    Marco Moock wrote:
    Also check the SMART values.

    In Ub, disks can do that graphically; select the disk and the menu has a
    SMART data and self-tests item that shows 13 smart attributes and their
    assessment w/o even doing any self-tests.

    I mention it because I had never seen it :-)

    Thanks. You write "In Ub, disks can do that raphically". I take it
    "Ub" means Ubuntu. Where in Ubuntu should I see the D disc? In teh
    program "Files"? Here I only see files and folders, not discs, and I
    find no possibility to see the SMARTdata, not by right-click and not
    in any menus. Please help an ignorant idiot :-)

    I don't usually use Gnome/shell, so I'll look at it to navigate. The
    one I have handy nearby is the live 22.04.3. From the desktop I click Activities and use Disks in the search which brings up an app named
    Disks. In its L pane I select my target disk, and at the top of the R
    pane is an abbreviated 'hamburger' icon in the form of 3 dots vertical.
    If I click that, one of the items in the menu is SMART Data and
    self-tests. L = left R = right.

    By the way, I tried to use the fsck command. The command would not run
    on a mounted discs, and I was told to reboot while holding shift, to
    arrive in a spesial repair menu. However, holding down Shift or both Shift-keys only resulted in normal bootings.
    Also tried the command "badblocks in Terminal. It ran for appr. 10
    minutes and found no errors.

    Smart has more/ different info. Each tool has its value.


    --
    Mike Easter

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  • From Paul@21:1/5 to Jesper Kaas on Sun Oct 15 16:43:07 2023
    On 10/15/2023 3:13 PM, Jesper Kaas wrote:
    On Sun, 15 Oct 2023 11:22:34 -0700, Mike Easter <[email protected]d>
    wrote:

    Marco Moock wrote:
    Also check the SMART values.

    In Ub, disks can do that graphically; select the disk and the menu has a
    SMART data and self-tests item that shows 13 smart attributes and their
    assessment w/o even doing any self-tests.

    I mention it because I had never seen it :-)
    Thanks. You write "In Ub, disks can do that raphically". I take it
    "Ub" means Ubuntu. Where in Ubuntu should I see the D disc? In teh
    program "Files"? Here I only see files and folders, not discs, and I
    find no possibility to see the SMARTdata, not by right-click and not
    in any menus. Please help an ignorant idiot :-)

    By the way, I tried to use the fsck command. The command would not run
    on a mounted discs, and I was told to reboot while holding shift, to
    arrive in a spesial repair menu. However, holding down Shift or both Shift-keys only resulted in normal bootings.
    Also tried the command "badblocks in Terminal. It ran for appr. 10
    minutes and found no errors.

    Best regards


    smartmontools is the likely tool for displaying SMART data.

    apt search smartmontools # it may already be installed
    sudo apt install smartmontools

    sudo smartctl -a /dev/sda

    ( https://linuxconfig.org/how-to-check-an-hard-drive-health-from-the-command-line-using-smartctl )

    SSDs are highly unlikely to throw CRC errors. Like hard drives,
    they do re-allocation from spares, if something appears to be
    "stuck" or "permanently broken".

    Unlike hard drives, SSDs have "end of life policy".
    An Intel SSD, stops both reads and writes, when the
    flash has reached 600 writes per location. This
    means the Intel drive "bricks" and you cannot
    recover your data. Some other brands stop writing
    but allow reading, which is a better policy for the
    average consumer. Always check the policy implemented
    by the brand you bought.

    Paul

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