Comment 0 for bug 1639517

My notebook is a HP Pavilion 17-g164ng with an AMD A10-8780P APU and 2 graphic subsystems - Carrizo, a VGA compatible controller and Topaz.

When booting the screen is black – backlight on – off - on.
When HDD is inactive
- keyboard is not locked and I can shutdown/reboot by Alt + Print +o/b or Strg + Alt + Del
- remote access e.g. using ssh is possible

Testsystems: Ubuntu/Kubuntu 14.04, 15.10, 16.04, 16.10.

Workaround, UEFI-boot, kernel parameters :
  nomodeset
  nomodeset xforcevesa
Resolution without/with xforcevesa: 800x600 / 1600x900 – the optimal resolution

In 14.04 and 15.10 I installed fglrx – the AMD driver.

It seems very similar to that described in #1597079.

The bug report was generated from a remote PC. My HP notebook was started without any workaround parameters.
This apport does'nt display the second graphic subsystem Topaz R7 as an apport generated with nomodeset xforcevesa.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
Uname: Linux 4.4.0-45-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Sat Nov 5 23:40:19 2016
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Carrizo [1002:9874] (rev c4) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Carrizo [103c:80b6]
InstallationDate: Installed on 2016-11-03 (2 days ago)
InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: HP HP Pavilion Notebook
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-45-generic.efi.signed root=UUID=d006dbb4-8a2a-4cfe-b38e-7d35b34bca09 ro quiet splash
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/19/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F.41
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 80B6
dmi.board.vendor: HP
dmi.board.version: 81.32
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF.41:bd09/19/2016:svnHP:pnHPPavilionNotebook:pvr:rvnHP:rn80B6:rvr81.32:cvnHP:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion Notebook
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Sat Nov 5 23:32:11 2016
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.18.4-0ubuntu0.1
xserver.video_driver: amdgpu