<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - SIGSEGV "get_fb: failed to add fb" / sna_block_handler" href="https://bugs.freedesktop.org/show_bug.cgi?id=91467#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - SIGSEGV "get_fb: failed to add fb" / sna_block_handler" href="https://bugs.freedesktop.org/show_bug.cgi?id=91467">bug 91467</a> from <a class="email" href="mailto:andreas.reis@gmail.com" title="Andreas Reis <andreas.reis@gmail.com>"> Andreas Reis</a> <pre>Ah, wasn't aware of that DRI3 responsibility. Forcing DRI2 (ie. Option "DRI" "2"), disabling compton and rebooting (since a few weeks I lose all input devices when I merely restart X) indeed also removes the tearing (with TearFree set true, ofc). At least it does so on vsynctester.com. Alas, that addr2line only yields ??:0. I'll recompile with debug and see if I can provoke anything. (Also, I forgot: The tearing with compton only appears when I enable its glx-use-copysubbuffermesa, which is explicitly marked as potential vsync breaker in its manpage.) I probably should further mention that there are three issues I currently have with the kernel driver: <a class="bz_bug_link bz_status_NEW " title="NEW - [HSW] stuck on render ring, WARN_ON(__i915_wait_request(…))" href="show_bug.cgi?id=91452">https://bugs.freedesktop.org/show_bug.cgi?id=91452</a> <a class="bz_bug_link bz_status_NEW " title="NEW - [HSW] WARNING: plane A assertion failure, should be disabled but not" href="show_bug.cgi?id=91429">https://bugs.freedesktop.org/show_bug.cgi?id=91429</a> <a class="bz_bug_link bz_status_NEW " title="NEW - [HSW] *ERROR* crtc 21: Can't calculate constants, dotclock = 0!" href="show_bug.cgi?id=91428">https://bugs.freedesktop.org/show_bug.cgi?id=91428</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>