desktop-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Mishal, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1509868

** Package changed: xserver-xorg-video-intel (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1509868

Title:
  Horizontal white lines appear messing the screen display after
  upgrading to Kubuntu 15.10 a computer with Intel Graphics hardware

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Output of lspci command:

  00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)                                                                                    
  00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02)                                                                  
  00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)                                                                      
  00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 01)                                                                                      
  00:1c.1 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 2 (rev 01)                                                                                      
  00:1c.2 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 3 (rev 01)                                                                                      
  00:1c.3 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 4 (rev 01)                                                                                      
  00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 01)                                                                              
  00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 01)                                                                              
  00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 01)                                                                              
  00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 01)                                                                              
  00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 01)                                                                                
  00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)                                                                                                         
  00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)                                                                            
  00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)                                                                                   
  00:1f.2 IDE interface: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] (rev 01)                                                                           
  00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 01)                                                                                             
  02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 01)

  I open Firefox and after some minutes using it, suddenly the screen
  display is "visually damaged" by a lot of very thin horizontal white
  lines. This began to happen after upgrading to Kubuntu 15.10 and
  someone via IRC suggested me this workaround: Go to KDE System
  Settings -> Display configuration -> Compositor -> Tearing prevention
  (vsync) = set to 'never'; I did that and by fortune it worked!

  After this bug is reviewed and solved, I would like to restore the
  Tearing prevention (vsync) setting to "Automatic" again.

  Thanks in advance for attending this.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: i965-va-driver 1.6.0-1
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Sun Oct 25 16:28:21 2015
  InstallationDate: Installed on 2015-02-14 (253 days ago)
  InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  SourcePackage: intel-vaapi-driver
  UpgradeStatus: No upgrade log present (probably fresh install)

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