Bug#901701:

[Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>]

This patch[1] fixes the bug for me:

diff --git a/libglfork.cpp b/libglfork.cpp
index 03f514f..dda6e4c 100644
--- a/libglfork.cpp
+++ b/libglfork.cpp
@@ -359,7 +359,7 @@ static bool test_drawpixels_fast(Display *dpy,
GLXContext ctx, GLXFBConfig dconf
   int iters = 0;
   do {
     primus.dfns.glBufferSubData(GL_PIXEL_UNPACK_BUFFER_EXT, 0,
width*height*4, pixeldata);
-    primus.dfns.glDrawPixels(width, height, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
+    primus.dfns.glDrawPixels(width, height, GL_BGRA,
GL_UNSIGNED_BYTE, pixeldata);
     primus.dfns.glXSwapBuffers(dpy, pbuffer);
     iters++;
   } while (end > Profiler::get_timestamp());

[1] https://github.com/ribalda/primus/commit/1b6dbc56040a59b6b222ba40d7c2de8c6cf1fbba

--
Ricardo Ribalda