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[Bug 1127281] Re: Artifacts when scrolling

 

> and this function is used in GTK, chromium, Qt, etc, so there is likely to
> be no major problem with it, excepted with a few drivers that keep
> improving

Yes but the dock uses it for other windows. It's maybe not a common way
to use this function and we can maybe find this bug with other apps
which are already using it.

I see this bug on other computers and this is very annoying (e.g. hard
to use correctly Nautilus and Gedit with a lot of files/lines). And this
feature is a tiny feature (personally, I never minimise my windows
thanks to the use of 4, 6  or more viewports/desktops)

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https://bugs.launchpad.net/bugs/1127281

Title:
  Artifacts when scrolling

Status in Cairo-Dock : Core:
  Invalid
Status in “xserver-xorg-video-intel” package in Ubuntu:
  Incomplete

Bug description:
  When scrolling pages in the browser the opera or text scrollings in documents are shown artifacts in the form of bands with not updated pregoing image.
  If you turn off Cairodock the defect does not appear.

  cairo-dock -v
  3.1.99.rc1

  Motherboard  GA-H61M-S2PV
  CPU Intel Celeron G530 Sandy Bridge

  lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu 12.04.2 LTS
  Release:	12.04
  Codename:	precise 

  uname -a
  Linux masterok 3.2.0-37-generic #58-Ubuntu SMP Thu Jan 24 15:28:10 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux 

  glxinfo | grep render
  direct rendering: Yes
  OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Desktop 
  GL_NV_conditional_render, GL_AMD_draw_buffers_blend,

  glxheads
  glxheads: exercise multiple GLX connections (any key = exit)
  Usage:
    glxheads xdisplayname ...
  Example:
    glxheads :0 mars:0 venus:1
  Name: :0
    Display:     0x12ea010
    Window:      0x4400002
    Context:     0x12f9350
    GL_VERSION:  3.0 Mesa 9.0
    GL_VENDOR:   Intel Open Source Technology Center
    GL_RENDERER: Mesa DRI Intel(R) Sandybridge Desktop  

  Xorg 1.11.3 (17 January 2013  06:14:10AM)

  CompizConfig Settings Manager 0.9.5.92

  More:  http://forum.ubuntu.ru/index.php?topic=213201.0

  screen:
  http://piccy.info/view3/4086107/009bf681d51ae03fc0930f7e8f83796b/orig/

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