<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - segfault at 234 error 4 in i915_dri.so" href="https://bugs.freedesktop.org/show_bug.cgi?id=100189#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - segfault at 234 error 4 in i915_dri.so" href="https://bugs.freedesktop.org/show_bug.cgi?id=100189">bug 100189</a> from <a class="email" href="mailto:emil.l.velikov@gmail.com" title="Emil Velikov <emil.l.velikov@gmail.com>"> Emil Velikov</a> <pre>(In reply to Javi Ballester Tomás from <a href="show_bug.cgi?id=100189#c3">comment #3</a>) > Hi Emil. > The upgrade that initiated the problem was (17.0~git1701100730.17eac3~gd~x, > 17.1~git1702040730.106a51~gd~x), something happened between 170110 and > 170204. > Perfect - what you're looking for is "how to use git bisect". There's dozens of sources out there - from `git help bisect' (in the command line) to the Wine example [1]. In case you're wondering - Mesa source tree is located at [2] Note that you will need to rebuild and test mesa ~10 times. Make sure to use exact same build (configure) flags as your distro. [1] <a href="https://wiki.winehq.org/Regression_Testing#Running_the_bisection">https://wiki.winehq.org/Regression_Testing#Running_the_bisection</a> [2] <a href="https://cgit.freedesktop.org/mesa/mesa">https://cgit.freedesktop.org/mesa/mesa</a> (In reply to Javi Ballester Tomás from <a href="show_bug.cgi?id=100189#c4">comment #4</a>) > "LIBGL_ALWAYS_SOFTWARE=1 blender" works. Blender runs without errors. Also > Mpv, glmark2 and glxgears. This is very good step - it tells us that the software rasteriser is working fine. I.e. the variable 'disables' the GPU driver and makes the CPU do all the heavy lifting.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>