Created attachment 1225481 [details]
Screen shot launching Chromium

Description of problem:

Black screen, locking up gdm.

Version-Release number of selected component (if applicable):

Installed Packages
Name        : chromium
Arch        : x86_64
Epoch       : 0
Version     : 54.0.2840.90
Release     : 3.fc25
Size        : 143 M
Repo        : @System
From repo   : updates
Summary     : A WebKit (Blink) powered web browser
URL         : http://www.chromium.org/Home
License     : BSD and LGPLv2+ and ASL 2.0 and IJG and MIT and GPLv2+ and ISC and OpenSSL and (MPLv1.1 or GPLv2 or LGPLv2)
Description : Chromium is an open-source web browser, powered by WebKit (Blink).

How reproducible:

Steps to Reproduce:
1. Create a VirtualBox VM
2. Install Fedora 25 (Workstation Edition)
3. Installed groups: Cloud Management Tools, Development Tools
4. Update system: 4.8.8-300.fc25.x86_64
5. RESTART
6. Install VBOXADDITIONS_5.1.10_112026
7. RESTART
7. Install Chromium 53 or 54
8. Open chromium

Actual results:

Chromium black screen, locking up gdm.

Expected results:

A usable browser.

Additional info:

  System Version:	OS X 10.11.6 (15G1108)
  Kernel Version:	Darwin 15.6.0
  VirtualBox Instance:  Fedora 25 (Workstation Edition)
  Memory: 5120MB
  CPUs: 2

VBOXADDITIONS_5.1.10_112026
Fedora 25: 4.8.8-300.fc25.x86_64
GDM 3.22.1