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?
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.
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