[Bug 1462609] Re: Ubuntu 15.04 Blank screen boot up

[Aliaksandr]

Hi all,
I also have similar issue. When I reboot Ubuntu through "Shut Down" - "Restart" I get black screen after reboot (but I hear sound that notify about Ubuntu login screen). Then if I do hard shut down with power button and start up my notebook with this button again I see grub menu and Ubuntu starts normally, without any problem.

Suspend mode working without any problems.

Hardware: Samsung NP535U3C,  AMD Radeon HD7500G (using open source
driver - X.Org X server).

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https://bugs.launchpad.net/bugs/1462609

Title:
  Ubuntu 15.04 Blank screen boot up

Status in ubuntu-release-upgrader package in Ubuntu:
  Confirmed

Bug description:
  So hello, i have recently installed ubuntu 15.04 from windows 7. All
  installation process worked like a charm. Whenever i boot up my
  computer it flashes a purple screen and then nothing, the computer
  keeps running but the screen is blank! I then switch the computer off
  with the power on switch. I then boot up again and takes me normally
  into ubuntu. This happens every time i boot up the computer. Please
  help me if you can!

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