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Thread: X64+fglrx+4GB RAM+intel chipset?

  1. #1

    Default X64+fglrx+4GB RAM+intel chipset?

    Radeon HD 3870 + fglrx + 64 bit linux = crash - Phoronix Forums
    black screen with kubuntu 8.04 x86_64 and fglrx 8.5 - Phoronix Forums
    https://bugs.launchpad.net/ubuntu/+s...24/+bug/224404
    https://bugs.launchpad.net/ubuntu/+s...24/+bug/226672
    https://bugs.launchpad.net/linux/+bug/210780

    Want to seek your opinions on the bug descrived in these links. Basically, users of AMD videocards can't use fglrx with more than 3GB RAM on intel latest chipsets on 64-bit distros. Black screen and total lockup when trying to start x.
    There is something about MTRR tables I can't quite understand. But nobody is saying what is the cause, what needs to be fixed.

    My system is
    Core 2 Duo E8200
    Gigabyte EX38-DS5
    4GB DDR2-1066
    ATI Radeon 3870
    OpenSuse 11.0 RC1 x64

    Hoping for a good solution that doesn't involve halving my memory or sacrificing performance. Having hardware acceleration would be nice.

  2. #2

    Default Re: X64+fglrx+4GB RAM+intel chipset?

    It looks like a kernel bug. Your best course of action for OpenSUSE bugs is bugzilla. Search for similar open bugs, and if none exist create one.

    Submitting Bug Reports - openSUSE

  3. #3

    Default Re: X64+fglrx+4GB RAM+intel chipset?

    I know for a fact it is not an opensuse bug.
    Tried I think 6 different x64 distros on this machine.

  4. #4

    Default Re: X64+fglrx+4GB RAM+intel chipset?

    Need help editing the mtrr tables! (fglrx crash) - Phoronix Forums This seems to be the answer. Unsure whether that stays over a reboot though.

  5. #5

  6. #6

    Default Re: X64+fglrx+4GB RAM+intel chipset?

    **** Edit button Edit 2

    fglrx crashing with large RAM (4GB): How I fixed my MTRR - Rage3D Discussion Area more here plenty on google MTRR tables

  7. #7

    Default Re: X64+fglrx+4GB RAM+intel chipset?

    Quote Originally Posted by alecmg View Post
    I know for a fact it is not an opensuse bug.
    Tried I think 6 different x64 distros on this machine.
    I did not say it was an OpenSUSE bug, I said it was a kernel bug. The proper way to report kernel bugs associated with a Novell product is via bugzilla.

  8. #8

    Default Re: X64+fglrx+4GB RAM+intel chipset?

    this is not opensuse bug nor kernel bug. This is hardware/BIOS limitation. A lot of cheap (desktop) mobos can't cope with >3GB RAM even though manufacturers claim otherwise. In fact these mobos that will not crash still have exactly the same problem.

    You have the following options:
    decrease video aperture (BIOS)
    decrease video card RAM
    use no more than 3GB of RAM
    get BIOS update from your mobo manufacturer

    even though your problem may go away it is still not fixed and kernel has nothing to do withe the problem.

  9. #9

    Default Re: X64+fglrx+4GB RAM+intel chipset?

    Quote Originally Posted by broch View Post
    this is not opensuse bug nor kernel bug. This is hardware/BIOS limitation. A lot of cheap (desktop) mobos can't cope with >3GB RAM even though manufacturers claim otherwise. In fact these mobos that will not crash still have exactly the same problem.
    Wrong again. Windows XP x64 has no problems. Also note that problem appears only on NEW intel chipsets.

  10. #10
    Join Date
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    Location
    Kentucky
    Posts
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    Default Re: X64+fglrx+4GB RAM+intel chipset?

    He can try to eliminate the fglrx driver:

    At the bootsplash type "3"
    Boot to runlevel 3
    login as root

    type "sax2 -m 0=vesa" <--which is a crappy driver, but may get him up
    do the config
    test <-- when it is the way you want
    save
    "reboot"

    What does that do for you?

    I'd get a bug report in; the Devs are good about instructions for finding out what is wrong.
    Desktop Asus X-99 Viper. uefi & secure Boot, Win10, Leap 15.1; Laptop: ASUS GL752VW Optimus, uefi+Secure Boot, Win10, Leap 15.1 & T-weed and IMac

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