[Bug 92206] New: Kernel 4.2 colorspace washed out (Haswell GPU)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92206

            Bug ID: 92206
           Summary: Kernel 4.2 colorspace washed out (Haswell GPU)
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: adr3nal1n at inbox.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Following an upgrade to kernel 4.2.1 (Arch Linux X86_64), xrandr has no visible
effect on screen when switching from Full to Limited 16:235 and vice versa. The
screen appears visibly to be stuck at limited range with washed out colors,
despite what xrandr reports.

I installed and booted from the Arch Linux LTS kernel (currently at 4.1.8) and
the issue goes away. The GPU correctly outputs Full Range using the xrandr
settings "xrandr --output HDMI2 --set "Broadcast RGB" "Full" -display :0"

This issue is described in more detail here
http://forum.kodi.tv/showthread.php?tid=240397

and also has an open Arch Linux bug entry here
https://bugs.archlinux.org/task/46472

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