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[Bug 1290789] Re: Incorrect character rendering on Intel Mobile 4 Series Chipset Integrated Graphics Controller

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Thu, 24 Sep 2015 08:49:24 -0000
Reply-to: Bug 1290789 <1290789@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Darko S, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 1290789

Please ensure you have xdiagnose installed, and that you click the Yes
button for attaching additional debugging information.

When reporting bugs in the future please use apport by using 'ubuntu-
bug' and the name of the package affected. You can learn more about this
functionality at https://wiki.ubuntu.com/ReportingBugs.

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

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

** Changed in: xorg (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1290789

Title:
  Incorrect character rendering on Intel Mobile 4 Series Chipset
  Integrated Graphics Controller

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  Bug 
  Incorrect character rendering on Intel Mobile 4 Series Chipset Integrated Graphics Controller

  Ubuntu 13.10, with frequent updates (weekly at least).
  uname: Linux x 3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
  /proc/cmdline: BOOT_IMAGE=/boot/vmlinuz-3.11.0-18-generic root=UUID=... ro quiet splash vt.handoff=7

  Video driver used:
  ii  xserver-xorg-video-intel                      2:2.99.904-0ubuntu2.1                      amd64        X.Org X server -- Intel i8xx, i9xx display driver

  lshw extract:
      description: Notebook
      product: 20553AG ()
      vendor: LENOVO
      version: ThinkPad T500
  ...
          *-display:0
               description: VGA compatible controller
               product: Mobile 4 Series Chipset Integrated Graphics Controller
               vendor: Intel Corporation
               physical id: 2
               bus info: pci@0000:00:02.0
               version: 07
               width: 64 bits
               clock: 33MHz
               capabilities: msi pm vga_controller bus_master cap_list rom
               configuration: driver=i915 latency=0
               resources: irq:46 memory:f4400000-f47fffff memory:d0000000-dfffffff ioport:1800(size=8)
          *-display:1 UNCLAIMED
               description: Display controller
               product: Mobile 4 Series Chipset Integrated Graphics Controller
               vendor: Intel Corporation
               physical id: 2.1
               bus info: pci@0000:00:02.1
               version: 07
               width: 64 bits
               clock: 33MHz
               capabilities: pm bus_master cap_list
               configuration: latency=0
               resources: memory:f4200000-f42fffff

  As shown on middle of screenshot, occasionaly some character are incorrectly rendered. If repaint action is triggered
  (e.g. selecting text, or somethign similar, depending on application), character is repainted correctly.

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