[Bug 78462] New: [i915] display is black or 1 solid color (white, etc) , xrandr reset fixes temporarily

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78462

          Priority: medium
            Bug ID: 78462
          Assignee: chris at chris-wilson.co.uk
           Summary: [i915] display is black or 1 solid color (white, etc)
                    , xrandr reset fixes temporarily
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: blocker
    Classification: Unclassified
                OS: Linux (All)
          Reporter: eric at minutekey.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

Created attachment 98716
  --> https://bugs.freedesktop.org/attachment.cgi?id=98716&action=edit
Log_Conf_Dump_files_for_1_color_screen_on_3_PCs

We're having a problem with the i915 driver on Opensuse 13.1 on with Lenovo m58
(type 7360) PC's in our company's kiosks.

Here is the issue:
Randomly, our touch screen kiosk display will change to a solid color. It looks
like it takes what we think is the upper left pixel and displays that color
over
the entire screen. We can start a VNC into the kiosk and
still see the entire screen just fine, but our customer standing in front
of the kiosk can only see one color. If we reboot the PC everything comes
back as it should. However, if we just restart the X server it does not
fix the problem.  We are able to connect a seperate external VGA monitor and
see the same output as the touchscreen, so it doesn't seem to be the touch
screen hardware.  
Also, up until recently, we had the same 67 kiosks using this touch screen
running Windows XP for 3+ years without a single problem (due to XP's end of
life we're moving everything to Linux).  The same display running with our
newer PC (Lenovo M71e) hasn't exhibited the issue.  A couple of data points
we've gathered:

1.  When we keep power to the display but power cycle the PC it DOES fix the
problem.
2.  When we keep power to the display and just restart X it DOES NOT fix the
issue.

This occurs randomly, but we're seeing it 2x per day with 67 kiosks
running the same setup. Interestingly, our kiosks running on a
later model Lenovo M71e do not experience this behavior, and I believe
that model has the Intel integrated HD Graphics 2000.

The folowing commands work to get things working again: 
"xrandr --output VGA1 --off", then "xrandr --output VGA1 --mode 1024x768 --rate
60".

-- chipset: i915 kernel driver, 00:02.1 Display controller: Intel Corporation 4
Series Chipset Integrated Graphics Controller (rev 03)  (for all three PC's)
-- system architecture: x86_64
-- xf86-video-intel/xserver/mesa/libdrm version:
X.Org X Server 1.14.3.901 (1.14.4 RC 1)

On k2247:
libdrm_intel1-2.4.46-3.2.2.x86_64
xf86-video-intel-2.99.905-1.1.x86_64

On k1417:
libdrm_intel1-2.4.46-3.2.2.x86_64
xf86-video-intel-2.99.906-12.1.x86_64

On k1558:
libdrm_intel1-2.4.46-3.2.2.x86_64
xf86-video-intel-2.99.906-12.1.x86_64


-- kernel version: 3.11.6-4-default on k2247, 3.14.1-1.geafcebd-default on
k1417, k1558
-- Linux distribution: OpenSUSE 13.1
-- Machine or mobo model: Lenovo M58, type 7360, model CV7
-- Display connector: VGA

No error state for /sys/kernel/debug/dri/0/i915_error_state, or for
/sys/kernel/debug/dri/64/i915_error_state on any of the 3 PC's.

The different X conf files for each PC together make up the xorg.conf for that
PC. 
The attachment has all the main files requested for each PC.  Kiosk 1558 does
not have the X conf, and xrandr files.

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