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Thread: live usb 13.04, 13.10 - blank screen boot on hp notebook w/ Radeon HD 7520G

  1. #1
    Join Date
    Aug 2011
    Beans
    2

    live usb 13.04, 13.10 - blank screen boot on hp notebook w/ Radeon HD 7520G

    I've read a zillion posts about blank/black screen booting problem but haven't found a solution -
    New hp pavilion g6 notebook with Trinity Radeon HD 7520G graphics controller. Windows 8 pre-installed, uses UEFI booting. I have "secure boot" turned off, windows still boots.
    Trying to boot ubuntu either 13.04 or 13.10 64-bit "live" from a usb flash drive (problem is the same with either version): The kernel will boot, but (from dmesg) lightdm exits with an error code so blank screen. Right before the lightdm failure, there is the following message: "pci 0000:00:01.0: Invalid ROM contents". Doing an lspci, it turns out that 00:01 is in fact the display controller.

    Does this just mean that the kernel doesn't work with this display controller? Or any possible workaround?

  2. #2
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: live usb 13.04, 13.10 - blank screen boot on hp notebook w/ Radeon HD 7520G

    A lot of the new system need these settings instead of nomodeset.
    acpi_osi=Linux acpi_backlight=vendor

    Someone else also had issues with lightdm and changed to gdm.

    Some laptops with black screen find switching from lightdm to gdm works - user did not post all the details.
    Or with lightdm add sleep 1 in
    /etc/init/lightdm.conf
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







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