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Forum Thread Details
  • State Verified Answer
  • Replies 12 replies
  • Answers 1 answer
  • Subscribers 708 subscribers
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  • raspberrypi.
  • hdmi
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Related

no boot when hdmi connect

e14 Contributor
e14 Contributor over 10 years ago

Hello to all,

 

my first own raspberry 2 (raspbian jessy) does not reliable boot when switched on power.

 

I tracked the problem down and figured out that booting with hdmi connected will fail very often.

 

Is this behavior known?

Or rather an effect on my monitor?

 

Is there a way to fix it?

 

Best Regards

 

Stefan

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  • clem57
    0 clem57 over 10 years ago

    Hi,

         When not using HDMI, does it boot and you SSH or use it headless? I have had some troubles where the monitor/TV with HDMI does not recognize my Pi because of cables or HDMI standards like CEC incompatible issues.To learn more read the CEC section and try it from Raspberry Pi - Robert Eklund's homepage.

    Cheers,

    Clem

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  • e14 Contributor
    0 e14 Contributor over 10 years ago in reply to clem57

    Hi,

     

    When not using HDMI it starts always.

     

    I tried an other monitor (ASUS) and it worked.

     

    It seems that the problem only appears on my Samsung-Monitor (SynchMaster SA300) and only when it is in standby

     

    I have no glue what may happen in standby mode to raspberry.

     

     

    Best regards

     

    Stefan

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  • rew
    0 rew over 10 years ago in reply to e14 Contributor

    I don't have a ready solution for you, but...

     

    The video-source can ask the monitor what resolutions it supports. It is supposed to be able to do that even when the monitor is in standby. If the Samsung shows a different behaviour if it is in standby versus when it is not, it seems that this is not working.

     

    Now, with a "weird" HDMI monitor attached, in principle the Raspberry should still start, except maybe with a "weird" monitor configuration, maybe even "no screen" but it should at least start up and be reachable over the network. If that doesn't happen, there is also something weird going on with the 'pi.

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  • clem57
    0 clem57 over 10 years ago in reply to e14 Contributor

    Are you DVI or VGA?

    NPUTS

    VGA

    Yes

    DVI

    Yes

     

    Clem

    PS Did I say mine is a Samsung that gives me trouble? I will need to play with. Maybe the brand and Pi don't play well.image

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  • e14 Contributor
    0 e14 Contributor over 10 years ago in reply to rew

    Hi Roger,

     

    the raspberry simply did not boot at the samsung monitor, red led is on, green led remains off.

    So I guess the monitor hit the raspberry in some way.

     

    I am going to check what signals may pass the HDMI/DIV. Maybe the I get a clue what is going on.

     

    For me I can switch to Asus monitor but I also want to create a search machine findable way for people who do not have multiple monitors but the problem.

     

    Best Regards

     

    Stefan

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  • e14 Contributor
    0 e14 Contributor over 10 years ago in reply to clem57

    Hi Clem,

     

    I am using an HDMI converting to DVI-cable

    (Asus: HDMI to HDMI)

     

    Best Regards

     

    Stefan

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  • e14 Contributor
    0 e14 Contributor over 10 years ago in reply to clem57

    Hi Clem,

     

    I am using an HDMI converting to DVI-cable

    (Asus: HDMI to HDMI)

     

    Best Regards

     

    Stefan

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  • clem57
    0 clem57 over 10 years ago in reply to e14 Contributor

    Check out https://www.raspberrypi.org/forums/viewtopic.php?t=56672  talking about something like your situation,

    Clem

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