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  • Trouble installing bullseye on Rock Pi 4 A

    From Christian Kastner@21:1/5 to All on Fri Sep 24 11:50:01 2021
    Hi,

    For some reason, I'm not getting a signal via HDMI when running the
    bullseye installer from the prepared SD card images. I thought this
    might be a monitor issue, but booting a microSD card with the
    manufacturer's image shows that this is not the case.

    Any ideas what could be going on? There's an eMMC attached, but knowing
    that it might affect the boot process, I have zeroed it out.

    I'm doubtful that it's the installer. Yesterday, I finished an
    installation on a RockPro64, a similar platform, without issues.

    I'd attach a serial cable but the Rock Pi 4 requires on capable of
    1.5Mbps and none of my cables are. I thought I'd ask here before
    purchasing one.

    Best,
    Christian

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  • From Gene Heskett@21:1/5 to All on Fri Sep 24 16:20:01 2021
    On Friday 24 September 2021 04:54:08 Christian Kastner wrote:

    Hi,

    For some reason, I'm not getting a signal via HDMI when running the
    bullseye installer from the prepared SD card images. I thought this
    might be a monitor issue, but booting a microSD card with the
    manufacturer's image shows that this is not the case.

    Any ideas what could be going on? There's an eMMC attached, but
    knowing that it might affect the boot process, I have zeroed it out.

    I'm doubtful that it's the installer. Yesterday, I finished an
    installation on a RockPro64, a similar platform, without issues.

    I'd attach a serial cable but the Rock Pi 4 requires on capable of
    1.5Mbps and none of my cables are. I thought I'd ask here before
    purchasing one.

    Best,
    Christian

    On the R-pi4B, its a bit bitchy, and you have to edit something to up
    the signal swing before it works on the pi's. Since this too uses mali
    video, I would not be surprised if it didn't need a boost too.

    But I can't tell you where to edit, everybody has to be different, and
    nobody has any for sale. My own experience with the earlier hardkernel
    (korean) version was nice running armbian but the spi didn't work and
    questions about it were ignored. Armbian also did not have a realtime preemptable kernel, a must for my application. I do have one for the
    pi3-4's, but I had to build it, no support from the foundation and then
    figure out how to install it. But it works well, with uptimes in months.
    This does look like an upward step in capabilities so I might be
    interested in testing one.
    --
    "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
    Genes Web page <http://geneslinuxbox.net:6309/gene>

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  • From Christian Kastner@21:1/5 to Gene Heskett on Fri Sep 24 21:50:01 2021
    On 24.09.21 16:10, Gene Heskett wrote:
    On the R-pi4B, its a bit bitchy, and you have to edit something to up
    the signal swing before it works on the pi's. Since this too uses mali
    video, I would not be surprised if it didn't need a boost too.

    The weird thing is, until Thursday it was running a vanilla Debian
    install flawlessly, I just wanted to re-image cleanly.

    This does look like an upward step in capabilities so I might be
    interested in testing one.

    If you mean the Rock Pi 4, I must say I do like it. It's compact, and
    the optional heatsink + M.2 extension board fit together snugly. I'd
    also add an RTC battery.

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