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  • Re: Streaks on screen. maybe OT

    From Stefan Monnier@21:1/5 to All on Mon Oct 14 03:20:01 2024
    A couple of days ago it starts up with a flurry, relatively dark screen with
    streaks. After about 10 minutes hooked by HDMI to a monitor for tv it
    becomes more distinct and brighter though not so much as before, streaks
    are gone. (I think it may be getting darker. The image on the tv is as
    bright and distinct as ever.)

    Does the "dark screen with streaks" still show something useful?
    Maybe a photo would help diagnose the problem.

    If the "dark screen with streaks" does not show anything resembling the windows&text you expect to see, then it reminds me of a thing I've seen
    on some laptops when the driver fails to initialize the
    display properly (i.e. a software problem). Does it happen right away
    at boot, or only later on (say, when the DRM driver is loaded, or when
    X11 or Wayland is launched)?


    Stefan

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  • From Stefan Monnier@21:1/5 to All on Mon Oct 14 15:50:02 2024
    Not much of a film director but here a short video of the phenomenon.

    Ah, that doesn't looks like a software problem, indeed.


    Stefan

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  • From Kent West@21:1/5 to Stefan Monnier on Mon Oct 14 16:00:01 2024
    This is a multi-part message in MIME format.
    On 10/14/24 8:44 AM, Stefan Monnier wrote:
    Not much of a film director but here a short video of the phenomenon.
    Ah, that doesn't looks like a software problem, indeed.


    Stefan

    Yeah, that seems like a hardware problem. Two thoughts:

    1) Boot off a live USB stick; that eliminates currently-installed
    software as the culprit.

    2) Try squeezing (not crushing) various parts of the laptop when it's exhibiting the problem; if squeezing affects the manifestation, it's a
    hardware issue. (The reverse is not necessarily true.)

    --
    Kent West <")))><
    IT Support / Client Support
    Abilene Christian University
    Westing Peacefully -http://kentwest.blogspot.com

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    <div class="moz-cite-prefix">On 10/14/24 8:44 AM, Stefan Monnier
    wrote:<br>
    </div>
    <blockquote type="cite"
    cite="mid:jwvwmiaer5c.fsf-monnier+gmane.linux.debian.user@gnu.org">
    <blockquote type="cite">
    <pre wrap="" class="moz-quote-pre">Not much of a film director but here a short video of the phenomenon.
    </pre>
    </blockquote>
    <pre wrap="" class="moz-quote-pre">
    Ah, that doesn't looks like a software problem, indeed.


    Stefan
    </pre>
    </blockquote>
    <p>Yeah, that seems like a hardware problem. Two thoughts:</p>
    <p>1) Boot off a live USB stick; that eliminates currently-installed
    software as the culprit.</p>
    <p>2) Try squeezing (not crushing) various parts of the laptop when
    it's exhibiting the problem; if squeezing affects the
    manifestation, it's a hardware issue. (The reverse is not
    necessarily true.)<br>
    </p>
    <p><span style="white-space: pre-wrap">
    </span></p>
    <pre class="moz-signature" cols="72">--
    Kent West &lt;")))&gt;&lt;
    IT Support / Client Support
    Abilene Christian University
    Westing Peacefully - <a class="moz-txt-link-freetext" href="http://kentwest.blogspot.com">http://kentwest.blogspot.com</a></pre>
    </body>
    </html>

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  • From gene heskett@21:1/5 to FJD on Mon Oct 14 19:10:01 2024
    On 10/14/24 09:17, FJD wrote:
    On Mon, 14 Oct 2024, FJD wrote:

    I've switched the cable a couple of times. I just switched out the
    cable and used a different one.

    Streaky blurry darker screen.

    I should add or clarify that it seems to improve considerably after a
    couple of minutes.

    This is a classic example of bad capacitors in the device. Obtain an ESR
    meter, learn how to use it, learn how to solder, and replace any
    electrolytic capacitor that reads over 1 ohm of ESR. Should fix it right up.

    Also after I begin to run the t.v. software (Hulu) but it seems rather
    linked to the time than any particular software.

    Thanks for getting back to me!

    Not much of a film director but here a short video of the phenomenon. <https://drive.google.com/file/d/1_lS_EZY04PISaWzIcgQKR1SCKQvvtCji/view?usp=sharing>

    f.


    Cheers, Gene Heskett, CET.
    --
    "There are four boxes to be used in defense of liberty:
    soap, ballot, jury, and ammo. Please use in that order."
    -Ed Howdershelt (Author, 1940)
    If we desire respect for the law, we must first make the law respectable.
    - Louis D. Brandeis

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