Thanks 

> On 2 Sep 2019, at 22:10, Kai-Heng Feng <email address hidden> wrote:
> 
> Please use this test kernel for the interim:
> https://people.canonical.com/~khfeng/lp1833617/
> 
> -- 
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1833617
> 
> Title:
>  [amdgpu] screen freeze after suspend
> 
> Status in linux package in Ubuntu:
>  Confirmed
> Status in linux source package in Disco:
>  New
> Status in xserver-xorg-video-amdgpu source package in Disco:
>  New
> Status in linux source package in Eoan:
>  Confirmed
> Status in xserver-xorg-video-amdgpu source package in Eoan:
>  Invalid
> 
> Bug description:
>  === SRU Justification ===
>  [Impact]
>  Screen freeze after S3 on AMD Stoney Ridge.
> 
>  [Fix]
>  Pin the VRAM so it won't contain garbage data after S3.
> 
>  [Test]
>  After applying this patch I can confirm the issue is gone on Dell
>  Inspiron 3180, a Stoney Ridge laptop.
> 
>  [Regression Potential]
>  Low. This patch only touched a small subset of amdgpu.
> 
>  === Original Bug Report ===
>  It's most likely amdgup driver needs an upgrade. Problem occurs since kernel upgrade to 5.0
> 
>  ProblemType: Bug
>  DistroRelease: Ubuntu 19.04
>  Package: xorg 1:7.7+19ubuntu12
>  ProcVersionSignature: Ubuntu 5.0.0-18.19-generic 5.0.12
>  Uname: Linux 5.0.0-18-generic x86_64
>  ApportVersion: 2.20.10-0ubuntu27
>  Architecture: amd64
>  CompositorRunning: None
>  Date: Thu Jun 20 13:46:46 2019
>  DistUpgraded: Fresh install
>  DistroCodename: disco
>  DistroVariant: ubuntu
>  ExtraDebuggingInterest: Yes, if not too technical
>  GraphicsCard:
>   Advanced Micro Devices, Inc. [AMD/ATI] Stoney [Radeon R2/R3/R4/R5 Graphics] [1002:98e4] (rev eb) (prog-if 00 [VGA controller])
>     Subsystem: Dell Stoney [Radeon R2/R3/R4/R5 Graphics] [1028:087e]
>  InstallationDate: Installed on 2019-06-06 (14 days ago)
>  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
>  MachineType: Dell Inc. Inspiron 3180
>  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-18-generic root=UUID=a16bd163-e82f-4ec1-9c5f-c9bd32e225fa ro
>  SourcePackage: xorg
>  UpgradeStatus: No upgrade log present (probably fresh install)
>  dmi.bios.date: 03/09/2018
>  dmi.bios.vendor: Dell Inc.
>  dmi.bios.version: 1.3.0
>  dmi.board.name: 0918N8
>  dmi.board.vendor: Dell Inc.
>  dmi.board.version: A00
>  dmi.chassis.type: 10
>  dmi.chassis.vendor: Dell Inc.
>  dmi.chassis.version: 1.3.0
>  dmi.modalias: dmi:bvnDellInc.:bvr1.3.0:bd03/09/2018:svnDellInc.:pnInspiron3180:pvr1.3.0:rvnDellInc.:rn0918N8:rvrA00:cvnDellInc.:ct10:cvr1.3.0:
>  dmi.product.family: Inspiron
>  dmi.product.name: Inspiron 3180
>  dmi.product.sku: 087E
>  dmi.product.version: 1.3.0
>  dmi.sys.vendor: Dell Inc.
>  version.compiz: compiz N/A
>  version.libdrm2: libdrm2 2.4.97-1ubuntu1
>  version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.2-1ubuntu1.1
>  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
>  version.xserver-xorg-core: xserver-xorg-core 2:1.20.4-1ubuntu3
>  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
>  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
>  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
>  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
> 
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