app-emulation/playonlinux uses glxinfo and glxgears, both part of x11-apps/mesa-progs, to test the availability and functionality of 3D acceleration. Using a modular X x11-apps/mesa-progs is no longer installed by default. A dependency on x11-apps/mesa-progs should be added in the ebuild. Reproducible: Always Steps to Reproduce: 1. Start playonlinux 2. In the menu bar go to Settings and then System 3. Click on the buttons GLXInfos and 3D Test Actual Results: Clicking on the GLXInfos and 3D Test buttons have no effect if x11-apps/mesa-progs is not installed. Expected Results: Clicking on the GLXInfos and 3D Test buttons should show the output of glxinfo or run glxgears respectively. The same problem exists in both version 3.6 and 3.7 of app-emulation/playonlinux.
I will try to fix that next week-end (I need my x86 computer).
Resolved in 3.7-r1. Thank you for reporting.