Hello, Ever since upgrading from Ubuntu 14.04 to 16.04, and thus from Catalyst to radeon, opening windows / games with opengl in them is possible, BUT I have to resize the window in order to see anything. I switch to the AMD card by using `DRI_PRIME=1`. A simple test is running `glxgears` which renders a nice black window. $ uname -a Linux arbrak 4.4.0-105-generic #128-Ubuntu SMP Thu Dec 14 12:42:11 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.3 LTS Release: 16.04 Codename: xenial $ lspci | grep -i vga 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Neptune XT [Radeon HD 8970M] (rev ff) $ DRI_PRIME=1 glxinfo | grep "OpenGL renderer" OpenGL renderer string: AMD PITCAIRN (DRM 2.43.0 / 4.4.0-105-generic, LLVM 5.0.0)
Please attach the corresponding Xorg log file.
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