[Bug 107155] [regression] Tray icons are displayed incorrectly with MESA 18.0.5 on Intel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107155

            Bug ID: 107155
           Summary: [regression] Tray icons are displayed incorrectly with
                    MESA 18.0.5 on Intel
           Product: Mesa
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i915
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: me at programings.eu
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 140503
  --> https://bugs.freedesktop.org/attachment.cgi?id=140503&action=edit
The tray icons of VLC and Electrum are affected by the problem

The recent upgrade from MESA 17.2.8 to 18.0.5 is causing the icons of some
applications bundled with Ubuntu 16.04 to be displayed incorrectly in the
status bar. The icons are surrounded by a shadow (or a black background) and
some colorization is missing.
The problem can be seen on the attached picture - VLC and Electrum icons are
affected by the problem (VLC's icon is surrounded by an extra shadow and
Electrum icon is supposed to be blue but is all black), and HexChat's icon is
displayed correctly next to them.

I'm using Linux Mint MATE 18.3 (based on Ubuntu 16.04's package base), but the
problem is present on Ubuntu MATE 16.04, too. The hardware i'm using is
ThinkPad T400 with an integrated Intel graphic accelerator, using the default
intel Xorg driver.

$ lspci -k | grep -EA3 'VGA|3D|Display'

00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
 Subsystem: Lenovo Mobile 4 Series Chipset Integrated Graphics Controller
 Kernel driver in use: i915
 Kernel modules: i915
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
 Subsystem: Lenovo Mobile 4 Series Chipset Integrated Graphics Controller
00:03.0 Communication controller: Intel Corporation Mobile 4 Series Chipset MEI
Controller (rev 07)
 Subsystem: Lenovo Mobile 4 Series Chipset MEI Controller

$ glxinfo | grep -i vendor

server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
Vendor: Intel Open Source Technology Center (0x8086)
OpenGL vendor string: Intel Open Source Technology Center

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