[Bug 97605] AMDGPU Black Screen when Booting

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97605

            Bug ID: 97605
           Summary: AMDGPU Black Screen when Booting
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: jamoflaw at gmail.com

My laptop (HP Pavilion 15-ab141na) is simply booting to a black screen on
16.04, the backlight is on but there is no display. Sound is working so I can
hear the ubuntu logon noise and can SSH from another machine.

During boot the screen on the laptop looks as if it is flashing off and on
before settling and remaining black with the backlight on.


Below is the debug info from the Ubuntu system, I think it lists the Carrizo
chip but I believe there is a Topaz chip in there too not listed below. 


---
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
DistUpgraded: Fresh install
DistroCodename: xenial
DistroRelease: Ubuntu 16.04
DistroVariant: ubuntu
DkmsStatus: bcmwl, 6.30.223.248+bdcom, 4.4.0-28-generic, x86_64: installed
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Carrizo [1002:9874] (rev c4) (prog-if
00 [VGA controller])
   Subsystem: Hewlett-Packard Company Carrizo [103c:80b5]
InstallationDate: Installed on 2016-06-28 (11 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
MachineType: HP HP Pavilion Notebook
NonfreeKernelModules: wl
Package: xserver-xorg-video-amdgpu 1.1.0-1
PackageArchitecture: amd64
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-28-generic.efi.signed
root=UUID=0a039e19-a176-41df-b477-a009498d708b ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
Tags: third-party-packages xenial ubuntu
Uname: Linux 4.4.0-28-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

_MarkForUpload: True
dmi.bios.date: 05/27/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F.19
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 80B5
dmi.board.vendor: HP
dmi.board.version: 81.29
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF.19:bd05/27/2016:svnHP:pnHPPavilionNotebook:pvr:rvnHP:rn80B5:rvr81.29:cvnHP:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion Notebook
dmi.sys.vendor: HP
version.compiz: compiz 1:0.9.12.2+16.04.20160526-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.68+git1607081632.8c8d5dd~x~padoka0
version.libgl1-mesa-dri: libgl1-mesa-dri
12.1~git1600708182300.64ac4ae~x~padoka0
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx
12.1~git1600708182300.64ac4ae~x~padoka0
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2
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+git1606291706.3be841d~x~padoka0
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git1607081624.26f8ab5~x~padoka0
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.12+git1607031832.12f7734~x~padoka0

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