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Unable to boot distros post kernel 3 on radeon hd 6790

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  • Unable to boot distros post kernel 3 on radeon hd 6790

    I have an issue that currently affects new dstros. The current distros boot to the live desktop but the image is garbled. It clearly shows the garbled image of my win 7 desktop as if it remained as an image in the gpu memory. I have tried many different ways to get a distro to boot. Currently trying ubuntu 11.10 so if any one has any ideas throw them at me.
    Tried:

    radeon.modeset=0
    radeon.modeset=1
    nomodeset
    acpi=force
    "acpi_osi " ("" to show space)
    So any other suggestions would be welcome.

    Ger.

  • #2
    Are you sure there isn't something wrong with your display or graphics card? Does Windows display properly?

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    • #3
      Hi
      The card is fine - works perfectly in windows and indeed in mint 11
      This happens across two different mobos and also affected the ati 4200 onboard on the other board.
      I was using opensuse tumbleweed and aafter updating the kernel past 3 I had the same issue

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      • #4
        Solved issue!

        I've nailed it!!

        acpi=off and it boots

        I tried it on the off chancwe when I remembered the Dell laptop I had needed it way back and bingo! 11.04 installed and booting.....

        So now to see if this will work with 11.10 - should do!!

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        • #5
          or not so solved!

          Seems I still have the issue in 11.10 - garbled screen and no desktop above has no impact.

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          • #6
            workaround

            I have identified the open source readeon driver as the cause

            if I boot ubuntu 11.10 with nomodeset blacklist=radeon 3
            then in tty apt-get install fglrx
            apt-get update
            startx
            I was able to reach the desktop and install, although I had to repeat the process post install
            After which I was there up to the point where there is an issue with the realtek lan lol

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