I submitted a new bug.

** Changed in: xorg (Ubuntu)
       Status: New => Invalid

** Tags removed: amd64 apport-bug artful performance ubuntu wayland-
session

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https://bugs.launchpad.net/bugs/1728168

Title:
  integrated intel  GPU doesn't work on ubuntu 17.10

Status in xorg package in Ubuntu:
  Invalid

Bug description:
  I've got a CPU with integrated GPU, it's the intel i5-8400; I've also
  installed an old asus [Radeon HD 6670/7670] GPU.

  If I run ubuntu connecting the monitor to the integrated GPU, after
  phisically removing the Asus Radeon card, the performance is very
  sluggish, unusable both in a wayland session and in an X session.

  If I run ubuntu without phisically removing the Asus Radeon Card
  (disabled from the bios), there is an error that prevents me from
  logging in, and that makes the TTY consoles unusable: all I get is a
  blank screen with infos about /dev/sda1

  If I use the radeon card, the performace is more or less ok.

  My question is why the integrated intel GPU doesn't work.

  OS:
  ubuntu 17.10

  graphic card:
   description: VGA compatible controller
         product: Turks XT [Radeon HD 6670/7670]
         vendor: Advanced Micro Devices, Inc. [AMD/ATI]
         physical id: 0
         bus info: pci@0000:01:00.0
         version: 00
         width: 64 bits
         clock: 33MHz
         capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
         configuration: driver=radeon latency=0
         resources: irq:131 memory:c0000000-cfffffff memory:dfe20000-dfe3ffff 
ioport:e000(size=256) memory:c0000-dffff

  integrated GPU, which doesn't work very well;
  intel i5-8400 cpu

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: xorg 1:7.7+19ubuntu3
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.1
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Fri Oct 27 23:37:35 2017
  DistUpgraded: Fresh install
  DistroCodename: artful
  DistroVariant: ubuntu
  ExtraDebuggingInterest: No
  GraphicsCard:
   Advanced Micro Devices, Inc. [AMD/ATI] Turks XT [Radeon HD 6670/7670] 
[1002:6758] (prog-if 00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. Turks XT [Radeon HD 6670/7670] [1043:03f2]
  InstallationDate: Installed on 2017-10-25 (2 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  MachineType: System manufacturer System Product Name
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-16-generic 
root=UUID=8946514c-0547-4d93-8cf6-bad6b91fa7dc ro quiet splash vt.handoff=7
  Renderer: Software
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/18/2017
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0419
  dmi.board.asset.tag: Default string
  dmi.board.name: PRIME Z370-A
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0419:bd10/18/2017:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEZ370-A:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.83-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.2-0ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.5-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20170309-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

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