[Openchrome-devel] [Bug 101395] New: Color banding with OpenChrome driver V0.6.133

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101395

            Bug ID: 101395
           Summary: Color banding with OpenChrome driver V0.6.133
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/openchrome
          Assignee: openchrome-devel at lists.freedesktop.org
          Reporter: martin651 at gmx.de

Created attachment 131905
  --> https://bugs.freedesktop.org/attachment.cgi?id=131905&action=edit
Xorg log file

Hi Kevin,

With the new Version 0.6.133 of the OpenChrome driver (from git repository) I
see color steps in images. This is not related to resume/standby because it is
also there after a complete reboot of the computer.

I tested that in more detail with that web-page (using Firefox):

http://www.lagom.nl/lcd-test/gradient.php

With the original OpenChrome driver of lubuntu 14.04 the gradient is completely
smooth. With Version 0.6.133 I clearly see two rows of 64 bands each.

This page
http://www.lagom.nl/lcd-test/display_settings.php
says I would have a color depth of 24 bit. I get the same result (24 bit) with:
xwininfo -root | grep Depth

My system:
Fujitsu Siemens Amilo Li 1705
VIA VN896 chipset
lubuntu 14.04 (upgraded to 14.04.5, but I didn't use a point release, so it is
not a HWE version)
OpenChrome V0.6.133

Best regards,
Marty

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