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Thread: Ubuntu 24.04: EDID block 0 is all zeroes

  1. #1
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    Ubuntu 24.04: EDID block 0 is all zeroes

    Hi all,

    since the upgrade from 22.04 to 24.04, the syslog of my headless server is flooded with the following kernel message:

    EDID block 0 is all zeroes

    Code:
    Sep 22 19:41:23 s01 kernel: EDID block 0 is all zeroes
    Sep 22 19:41:46 s01 kernel: message repeated 7 times: [ EDID block 0 is all zeroes]
    Sep 22 19:42:09 s01 kernel: EDID block 0 is all zeroes
    Sep 22 19:42:09 s01 kernel: message repeated 3 times: [ EDID block 0 is all zeroes]
    Sep 22 19:42:32 s01 kernel: EDID block 0 is all zeroes
    Sep 22 19:42:55 s01 kernel: message repeated 7 times: [ EDID block 0 is all zeroes]
    Sep 22 19:43:18 s01 kernel: EDID block 0 is all zeroes
    Sep 22 19:43:41 s01 kernel: message repeated 7 times: [ EDID block 0 is all zeroes]
    Sep 22 19:44:04 s01 kernel: EDID block 0 is all zeroes
    Sep 22 19:44:04 s01 kernel: message repeated 3 times: [ EDID block 0 is all zeroes]
    Sep 22 19:44:27 s01 kernel: EDID block 0 is all zeroes
    Sep 22 19:44:50 s01 kernel: message repeated 7 times: [ EDID block 0 is all zeroes]
    Sep 22 19:45:13 s01 kernel: EDID block 0 is all zeroes
    It seems to be a kernel bug related to the module i915, which is active in my system:

    https://forums.debian.net/viewtopic.php?t=154804

    Does anybody know how to stop this message without unloading the module as described in the Debian forum?

    Kind regards

  2. #2
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    Re: Ubuntu 24.04: EDID block 0 is all zeroes

    Quote Originally Posted by avoigt3 View Post
    Does anybody know how to stop this message without unloading the module as described in the Debian forum?

    Kind regards
    Will you show your current values:
    Code:
    cat /proc/sys/kernel/printk
    




    "When you practice gratefulness, there is a sense of respect toward others." >>Dalai Lama

  3. #3
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    Re: Ubuntu 24.04: EDID block 0 is all zeroes

    Code:
    root@s01:/home/xxxxx# cat /proc/sys/kernel/printk
    4    4    1    7

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    Re: Ubuntu 24.04: EDID block 0 is all zeroes

    here is why you see low level spam:
    Index:
    Code:
                         CUR  DEF  MIN  BTDEF
    0 - emergency        x              x                        
    1 - alert            x         x    x
    2 - critical         x              x
    3 - error            x              x
    4 - warning          x    x         x
    5 - notice           x              x
    6 - informational    V              V
    7 - debug
    This is too noisy, I just want critical and up (no errors). Unlabeled messages should be regarded as warning,
    I'll use this for mine:
    Code:
    sudo sysctl -w kernel.printk="3 4 1 3"
    
    Proof
    Code:
     cat /proc/sys/kernel/printk 
    1       4       1       3
    
    Or
    Code:
    sysctl kernel.printk 
    kernel.printk = 1       4       1       3
    
    Maybe give that a go.
    "When you practice gratefulness, there is a sense of respect toward others." >>Dalai Lama

  5. #5
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    Re: Ubuntu 24.04: EDID block 0 is all zeroes

    I have uncommented the relevant setting in /etc/sysctl.conf and rebooted the server.

    Code:
    # Uncomment the following to stop low-level messages on console
    kernel.printk = 3 4 1 3
    Unfortunately, this has not changed anything, the messages are still coming up again and again.

  6. #6
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    Re: Ubuntu 24.04: EDID block 0 is all zeroes

    Quote Originally Posted by avoigt3 View Post
    I have uncommented the relevant setting in /etc/sysctl.conf and rebooted the server.

    Code:
    # Uncomment the following to stop low-level messages on console
    kernel.printk = 3 4 1 3
    Unfortunately, this has not changed anything, the messages are still coming up again and again.
    I'll take this as you had a monitor connected at install time right?

    Outside of blocking it at the kernel level will prove to be difficult at best.

    I see bugs related to this with kernel 6.11, but have no idea what kernel your currently using.
    "When you practice gratefulness, there is a sense of respect toward others." >>Dalai Lama

  7. #7
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    Re: Ubuntu 24.04: EDID block 0 is all zeroes

    I'm using the default ubuntu kernel:

    Code:
    Linux s01 6.8.0-45-generic #45-Ubuntu SMP PREEMPT_DYNAMIC Fri Aug 30 12:02:04 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
    Now, I have also blacklisted the i915 module because I have not found a way to block these messages completely. I had 100000 messages in a few hours telling me that my monitor was not connected. Very useful. After blocking the module, the messages are gone. With kernel 5.x under Ubuntu 22.04, the same module had no issues with identical hardware. The server is running headless in multiuser target, so I do not need any graphical output.XRDP is running fine without the module.

  8. #8
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    Re: Ubuntu 24.04: EDID block 0 is all zeroes

    Thanks for the update.
    "When you practice gratefulness, there is a sense of respect toward others." >>Dalai Lama

  9. #9
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    Re: Ubuntu 24.04: EDID block 0 is all zeroes


  10. #10
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    Re: Ubuntu 24.04: EDID block 0 is all zeroes

    Quote Originally Posted by Yellow Pasque View Post
    That probably is the best route to take, "i915.disable_display=1" kernel line
    "When you practice gratefulness, there is a sense of respect toward others." >>Dalai Lama

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