[Bug 83101] New: Sandy Bridge Delayed rendering of text

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83101

          Priority: medium
            Bug ID: 83101
          Assignee: chris at chris-wilson.co.uk
           Summary: Sandy Bridge Delayed rendering of text
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jak at jak-linux.org
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

Created attachment 105286
  --> https://bugs.freedesktop.org/attachment.cgi?id=105286&action=edit
intel_reg_dumper output

Graphics: Sandy Bridge
Kernel: 3.16
Mesa: 10.2.5
Distribution: Debian (unstable)
Driver: 2.99.914

This bug manifests itself in different, although related ways. For example, in
hexchat lines do not get drawn correctly on the first time, there is some delay
until the line is drawn completely (this happens in about 10% of the cases):

https://plus.google.com/+JulianAndresKlode/posts/RkE3gpX8tiF

In a terminal, there are some hangs when using ncurses-based applications, and
even when entering normal commands it can hang. The bug does not occur all the
time.


I'm running under GNOME Shell. I'll try to see if it happens if I run in
non-compositing environment.

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