[Bug 94144] New: [SKL] Corruption/Flickering/Artifacts

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94144

            Bug ID: 94144
           Summary: [SKL] Corruption/Flickering/Artifacts
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: alexander.maznev at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 121741
  --> https://bugs.freedesktop.org/attachment.cgi?id=121741&action=edit
artifacts/corruption in atom editor

Hello -

I have several major glitches using intel video. Two of these may be quite
separate:

One is regarding artifacts on the screen and rendering -- for example with
"TearFree" "false", the terminal shows artifacts from previous states and
becomes nearly unusable - on the other hand setting "TearFree" "true" seems to
create another issue where the screen will (very briefly flicker black between
frequent refreshes, e.g. when scrolling or tailing a large amount of text).

The other is excessive corruption (I've seen it in other programs but far less
frequently for whatever reason) and rendering problems when using Chrome or
other chrome based applications (atom-editor). Even with "TearFree" "true" I
still experience corruption in atom-editor lines, switching between files
sometimes causes the screen to the write the text buffer one by one scanning
down etc.

I have experimented with a number of parameters, none of which seem to help
much (setting "AccelMethod" to "uxa" makes the desktop very very slow but
doesn't seem to fix much, I've tried glamor as well).
These issues appear to persist across both GL and non-GL based composite
managers (tested with gnome-desktop and openbox+xcompmgr).

uname -a 
Linux d-pc 4.4.0-4-ARCH #1 SMP PREEMPT Wed Jan 20 07:42:27 CET 2016 x86_64
GNU/Linux

lspci | grep VGA                                                                
00:02.0 VGA compatible controller: Intel Corporation Device 191b (rev 06)

/etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option      "TearFree" "true"
   # Option      "AccelMethod"  "sna"
   # Experimental Accelmethod
   Option      "AccelMethod"  "glamor"
   # "DRI"    "2" is default
   Option      "DRI"    "3"
   BusID       "PCI:0:2:0"
EndSection

pacman -Q | grep intel
xf86-video-intel 1:2.99.917+519+g8229390-1

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20160214/11c3dd88/attachment.html>