<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Hybrid graphics: GPU lockup when running glxgears" href="https://bugs.freedesktop.org/show_bug.cgi?id=93784#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Hybrid graphics: GPU lockup when running glxgears" href="https://bugs.freedesktop.org/show_bug.cgi?id=93784">bug 93784</a> from <a class="email" href="mailto:bartos.petr@gmail.com" title="bartos.petr@gmail.com">bartos.petr@gmail.com</a> <pre>(In reply to Nicolas Koch from <a href="show_bug.cgi?id=93784#c4">comment #4</a>) > Forgot to mention, of course I ran glxinfo with DRI_PRIME=1 Same problem here with ThinkPad L450 05:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Jet XT [Radeon R5 M240] (rev ff) I found than setting both integrated and discrete gpu to DRI3 allows to run glxgears, however it hard-freezes once any gpu intensive application is run for more than few minutes. Using additional vblank_mode=0 causes this hard-freeze to appear faster. Before hard-freeze there is massive fps drop during which it is possible to kill the application and avoid freeze. Also using echo "DDIS" > /sys/kernel/debug/vgaswitcheroo/switch and restarting X causes black screen (with backlight turned of) but that might be another bug</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>