#0  0x00007f1e7b46eb04 in glGetString () from /usr/lib/nvidia-340-updates/libGL.so.1
No symbol table info available.
#1  0x00007f1e7dab25da in QOpenGLContext::makeCurrent(QSurface*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#2  0x00007f1e7e040693 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
No symbol table info available.
#3  0x00007f1e7d1467ce in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#4  0x00007f1e7b18166a in start_thread (arg=0x7f1e26dc9700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f1e26dc9700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139767477737216, 5509731742754362649, 0, 140729343340559, 139767477737920, 47033264, -5599607742473874151, -5599511573618272999}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f1e7c84601d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.